<div>*Scroll has a remote-first work culture, our staff base is globally distributed and we are location agnostic. We make hiring decisions based on talent, culture fit and role suitability. If you have the skills and experience requested by this job description then please APPLY!</div><div>We are hiring a back-end engineer to join our infrastructure team. You will be joining a team which works on building the foundation of our framework. We are proud of building stable Etheriem layer 2 system. You will also be working with other team members to design, develop and maintain our mainnet stability. We also work on back-end tool chain. The role is ideal for an individual who thrives in a start-up environment, a self-starter that is dynamic and comfortable to take on responsibilities. This role will work closely with team members from China, so mandarin skill is highly preferred.</div><div><br></div><div><b>About Scrollâ€¦</b></div><div>Scroll is building an open source, bytecode level compatible zkEVM layer 2 solution for Ethereum. Our mission is to scale Ethereum while maintaining our values of credible neutrality, open-ness, and execution.</div>

Infrastructure Back-end Developer

<div class="content-intro"><h3><strong>About us</strong></h3>
<p><span style="font-weight: 400, style=;">Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts.&nbsp;</span></p>
<p><span style="font-weight: 400, style=;">Its bedrock open source Contract Libraries are a public good and industry standard for smart contract development. </span></p>
<p><span style="font-weight: 400, style=;">OpenZeppelinâ€™s professional expertise, unified with the Defender developer security platform, integrates through clientsâ€™ development lifecycles, so teams can plan, code, audit, deploy and operate projects faster and more safely.</span></p></div><h3><strong>What you'll be doing</strong></h3>
<p>As a Software Developer, you will join our team that works on open source libraries for Rust smart contracts, for use on multiple blockchain platforms. This library will offer similar capabilities to those found in the widely adopted OpenZeppelin Contracts library. We are looking for developers who have strength in Rust development and are familiar with smart contracts written in Rust, Solidity, or other smart contract programming languages.</p>
<p>In this role, you will play an essential part in designing and implementing new library modules, communicating with smart contract developers and blockchain network community members to gather feedback, and working collaboratively with other members of the development team to make sure our open source library meets developer needs and expectations. You will be responsible for library coding, testing, documentation, and security. You may also participate in open source tools development to assist developers using our library.</p>
<h3><strong>You have</strong></h3>
<ul>
<li>3 years of experience in software development.</li>
<li>2 years of Rust programming experience.</li>
<li>Interested in or knowledgeable about Ethereum L1s and L2s.</li>
<li>Strong desire to further your education about and contribute to the blockchain space.</li>
<li>Prior experience working remotely: strong personal organizational skills, a love for self-time management, and ability to work collaboratively with a team.</li>
<li>Advanced English communication skills â€” all of our internal and external communication is in English.</li>
</ul>
<h3><strong>Nice to have</strong></h3>
<ul>
<li>Experience contributing to open source projects.</li>
<li>Experience developing smart contracts, especially in Rust.</li>
<li>Experience with Typescript and UI frameworks such as React, Vue, or Svelte.</li>
<li>Good understanding of security concerns in the Ethereum ecosystem.</li>
</ul>
<h3><strong>Logistics:</strong></h3>
<p>Our interview process takes place on Zoom and tends to consist of the following stages:</p>
<ul>
<li>Recruiter Call (45 minutes)</li>
<li>Team Interview (1 hour)</li>
<li>Leadership Interview (45 minutes)</li>
<li>Paid work test (up to 10 days to complete the assignment)</li>
<li>Reference checks</li>
</ul><div class="content-conclusion"><section class="j-content">
<div class="container">
<h3 class="requirements"><strong>Benefits</strong></h3>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Unlimited holidays ğŸ��</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Fully remote: your way of working ğŸŒ�</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Paid parental leave &amp; benefits for primary or second caregiver ğŸ’™</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Company retreats in different locations around the world ğŸ˜�</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Work from home office equipment stipend of up to $500 USD ğŸª‘</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Monthly allowance for wellness activities ğŸ’ª</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Coworking: access to a coworking space of your choice ğŸ‘©â€�ğŸ’»</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Learning: technical training; spoken language lessons in any language of your choice (using Italki) ğŸ—£</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Working with a global team in a fast-growing industry ğŸš€</span></li>
</ul>
<p class="job-description"><span style="font-family: helvetica, arial, sans-serif;"><strong>Please note:</strong> Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information.</span></p>
<p class="job-description"><span style="font-family: helvetica, arial, sans-serif;"><span style="font-weight: 400;">At </span><strong>OpenZeppelin</strong><span style="font-weight: 400;">, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!</span></span></p>
<p>&nbsp;</p>
</div>
</section></div>

Open Source Developer - Rust

<p><span style="font-weight: 400;">Our mission is to unlock the collaborative power of communities by making Web3 universally easy to use, access, and build on.</span></p>
<p><span style="font-weight: 400;">Working with Consensys puts you at the </span><strong>forefront of an evolving paradigm</strong><span style="font-weight: 400;">, transforming our society for the better. We fundamentally believe blockchain is the next generation of technology that can lay the foundation for a more just and equitable society.&nbsp;</span></p>
<p><span style="font-weight: 400;">Blockchain tech is just over 10 years old. Ethereum itself is still a toddler and weâ€™re far from reaching our full potential. Youâ€™ll get to work on the tools, infrastructure, and apps that scale these platforms to billions of users.&nbsp;</span></p>
<p><span style="font-weight: 400;">Youâ€™ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects â€” challenging you to stay at the </span><strong>top of your game</strong><span style="font-weight: 400;">. Youâ€™ll join a network of entrepreneurs and technologists that reaches the </span><strong>edge of our ecosystem</strong><span style="font-weight: 400;">. Consensys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies.</span><span style="font-weight: 400;">&nbsp;</span></p>
<p><strong>About MetaMask</strong><br>Weâ€™re building for a future where the internet and world economy empowers people through interactions based on consent, privacy, and free association. Where both communities and individuals flourish. To accomplish that, weâ€™re working hard to make web3 accessible for everyone around the world.<br>MetaMask is both a crypto wallet and a gateway to the decentralized web. Our tools help people create communities, play video games, access financial services, make payments, invest in assets, protect against economic turmoil, and more. Our browser extension and mobile platforms meet the needs of millions of users and developers across the world.<br>Originally a humble key manager, today MetaMask serves over 30 million monthly active users as a decentralized application development platform, an aggregator of decentralized cryptocurrency exchanges, and a decentralized identity manager.</p>
<p><strong>What youâ€™ll do</strong><br>You will work on creating and maintaining scalable backend services that enable people to use MetaMask to access web3 more securely and with a better user experience.</p>
<p><strong>Would be great if you brought this to the role</strong><br>Required Skills:</p>
<ul>
<li>5+ years of experience as a Backend Software Engineer working on production applications</li>
<li>Experience with Node.js back-end development (preferably Typescript)</li>
<li>Experience with, or understanding of: PostgreSQL</li>
<li>Experience working on agile projects in an Agile environment</li>
<li>Experience working with CI/CD tools</li>
<li>Experience working in a distributed, remote team environment.</li>
<li>Excellent written and spoken communication skills.</li>
<li>Located in the Americas/able to work U.S. business hours</li>
</ul>
<p>Bonus Points for any of:</p>
<ul>
<li>Experience as a Team Lead or Tech Lead</li>
<li>Experience in Typescript and/or the NestJS framework</li>
<li>Experience with microservices architectures</li>
<li>Understanding of blockchain technology, especially Ethereum</li>
</ul>
<p><strong>Other skills to demonstrate:</strong></p>
<ul>
<li>Excellent verbal and written communication in English</li>
<li>Teamwork, flexibility, initiative, communication and organization</li>
<li>Willingness to constantly learn &amp; improve, challenging yourself to stay at the top of your game</li>
</ul>
<p></p>
<p><span style="font-weight: 400;">Don't meet all the requirements? Don't sweat it. Weâ€™re passionate about building a diverse team of humans and as such, if you think you've got what it takes for our chaotic-but-fun, remote-friendly, start-up environmentâ€”apply anyway, detailing your relevant transferable skills in your cover letter. While we have a pretty good idea of what we need, we're ready for you to challenge our thinking on who needs to be in this role.</span></p>
<p><em><span style="font-weight: 400;">ConsenSys is an equal opportunity employer. We encourage people from all backgrounds to apply. We are committed to ensuring that our technology is made available and accessible to everyone. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law. ConsenSys is aware of fraudulent recruitment practices and we encourage all applicants to review our best practices to protect yourself which can be found (https://consensys.net/careers/best-practices-to-avoid-recruitment-fraud/)</span></em><em><span style="font-weight: 400;">.</span></em></p><div class="content-pay-transparency"><div class="pay-input"><div class="description"><p><em>The salary range for US-based candidates only will be determined throughout the interview process depending on experience and skills.</em></p></div><div class="title">US pay range (not including bonus, equity or other benefits)</div><div class="pay-range"><span>$100,000</span><span class="divider">&mdash;</span><span>$209,000 USD</span></div></div></div>

Senior Backend Engineer (API Platform)

<div class="content-intro"><div>The Uniswap Protocol is the largest decentralized trading and automated market making protocol (often called a DEX, â€œDecentralized Exchangeâ€�) on Ethereum.</div>
<div>&nbsp;</div>
<div>The Uniswap Labs team was a major contributor to the Uniswap Protocol and now focuses on building a suite of products to support the Uniswap Labs ecosystem. Our team is one of the most impactful in crypto. We are headquartered in SoHo in New York City with the option to be partially or fully remote depending on the position.</div></div><div class="p-rich_text_section">&nbsp;</div>
<div class="p-rich_text_section">Weâ€™re looking for an enthusiastic, self-motivated Senior Backend Engineer to help us build the next generation of financial products.&nbsp;</div>
<div class="p-rich_text_section">&nbsp;</div>
<div class="p-rich_text_section">
<div>
<div><strong>Responsibilities</strong></div>
</div>
<div>
<ul>
<li>Write high quality and well tested code, and review code from other team members.</li>
<li>Collaborate with engineers, designers, and product managers to turn requirements into products and lead the execution end to end.</li>
<li>Provide guidance and technical leadership to peers in navigating architectural and coding tradeoffs.</li>
<li>Take charge of driving strategic technical initiatives across engineering pods that impact the entire engineering organization.</li>
</ul>
<p><strong>Requirements</strong></p>
<ul>
<li>6+ years of software engineering experience</li>
<li>Excellent coding skills, deep understanding of cloud architectures, algorithms, and strong debugging capabilities.</li>
<li>Consistently manage projects comprehensively, starting from gathering requirements and designing, to debugging and testing, and finally to release management and operational monitoring.</li>
<li>Design, build, and maintain a large-scale production system on the cloud, ensuring smooth operation and high availability.</li>
<li>Be able to build systems from the ground up, on a 0â†’1 fashion.</li>
<li>Desire to keep up with modern best practices in software development/Web3, and shape our tech stack as we build out new systems and services.</li>
<li>Mentored junior engineers</li>
</ul>
<p><strong>Nice to have:</strong></p>
<ul>
<li>Has previously been a Technical Lead</li>
<li>Prior experience with time-series based monitoring / observability systems</li>
<li>Degree in computer science</li>
<li>Experience with Typescript</li>
<li>Experience with AWS</li>
<li>Love for unicorns :)&nbsp;</li>
</ul>
</div>
</div>
<p><em>Minimum full-time salary of $180,000-$220,000. Disclosure in accordance with New York City's Pay Transparency Law. </em><em>Full Time employees at Uniswap Labs are also eligible for other compensation elements, including equity, tokens, and benefits, dependent on the position type.</em></p><div class="content-conclusion"><p>Uniswap Labsâ€™ Full-Time employee benefits include unlimited and encouraged time off, 100% company-paid medical, dental, &amp; vision for you and your dependents, 401(k) participation, annual $1,500 education stipend, up to 16 weeks paid parental leave, home office setup stipend for remote employees and daily lunches at NY headquarters (all benefits are subject to applicable taxes and based on eligibility).</p>
<p>Uniswap Labs is proud to be an equal opportunity employer (EEO). We provide employment opportunities without regard to age, race, color, ancestry, national origin, religion, disability (including gender dysphoria and similar gender-related conditions), sex, gender identity or expression, sexual orientation (including actual or perceived heterosexuality, homosexuality, bisexuality, and asexuality), veteran status, military status, domestic violence victim status, reproductive health decision making or any other protected category.</p></div>

Senior Backend Engineer

<p><a href="http://chainsafe.io/">ChainSafe</a> is a leading blockchain research and development firm specializing in infrastructure solutions for the decentralized web. Alongside its contributions to significant ecosystems such as Ethereum, Polkadot, Filecoin, Mina, and more, ChainSafe creates solutions for developers and teams across the web3 space utilizing our expertise in <a href="https://buildwithsygma.com/">bridging</a>,&nbsp;<a href="http://gaming.chainsafe.io/">gaming</a>,&nbsp;NFTs, and&nbsp;<a href="http://storage.chainsafe.io/">decentralized storage.</a> As part of the mission to build innovative products for users and better tooling for developers, ChainSafe embodies an open-source and community-oriented ethos.</p>
<p>To learn more about ChainSafe, look at our <a href="https://discord.com/invite/xSAwrnCWcg">Discord</a>, <a href="https://github.com/chainsafe">GitHub</a>, and <a href="https://chainsafe.io/projects">website</a>.</p>
<p><strong>Hereâ€™s what you need to know before reading on:</strong></p>
<ul>
<li>Our progressive tech stack includes Go, Rust, and TypeScript</li>
<li>We spearhead ecosystem projects like <a href="https://github.com/ChainSafe/lodestar">Lodestar</a>, <a href="https://github.com/ChainSafe/web3.js">Web3.js</a>, <a href="https://github.com/ChainSafe/forest">Forest</a>, <a href="https://github.com/ChainSafe/mina-rs">Mina-rs</a>, and <a href="https://github.com/ChainSafe/gossamer">Gossamer</a></li>
<li>We are global, remote-friendly, and open to contractors</li>
<li>Youâ€™ll form part of the Sygma Engineering team, our bridging protocol</li>
<li>At Sygma we believe that cross-chain interoperability is the fundamental enabler for the next wave of growth in the blockchain industry. Sygma will empower builders to create streamlined experiences where users are not confined to one ecosystem. By enabling elaborate cross-chain functionality and putting most of the steps under the hood, Sygma will enable smooth, web2-like user experiences. For more information about Sygma please visit <a href="http://buildwithsygma.com">buildwithsygma.com</a></li>
</ul>
<p>At ChainSafe, youâ€™ll be part of a team that believes in the community's vital importance and contributes to advancing humanity with open-source and decentralized technology.</p>
<h2>About the role</h2>
<p>As our Senior BlockOps engineer for Sygma, our cross-chain interoperability protocol, you will play a vital role in our dedicated BlockOps team, defining and implementing best-practice strategies and guides to manage and optimize our infrastructure.</p>
<p>The BlockOps team supports the critical systems, services, and tooling at the foundation of Sygmaâ€™s mission, to abstract away all the complexities of cross-chain interoperability to enable users to â€˜deposit from anywhereâ€™. We enable Sygmaâ€™s engineers to design, develop, and operate services quickly, safely, securely, and reliably. BlockOps teams build and maintain the platforms critical to the existence of Sygma.</p>
<p>Your expertise will undoubtedly contribute to the sophistication of blockchain applications and redefine the boundaries of what's possible within this emerging technological sphere. All work across Sygma will be open-source, ensuring expansive opportunities for deep contribution and collaborative efforts across various web3 blockchains and ecosystems.</p>
<h2>Responsibilities</h2>
<p><strong>What you will be doing</strong></p>
<ul>
<li>Ensure reliable operation of the companyâ€™s distributed Relayer nodes operations across various blockchain networks (EVM, Substrate, Cosmos SDK) while adhering to internal SLAs and committed KPIs</li>
<li>Design and implement procedures related to Sygmaâ€™s Relayer node operations (deployment and upgrade, incident response, and key management)</li>
<li>Build monitoring and observability for various Sygma services including a distributed set of relayers and various blockchain full nodes.</li>
<li>Provide training and guidance for other members of the infrastructure team, ensuring round-the-clock node operation and incident response.</li>
<li>Document and communicate technical details via open-source documentation</li>
<li>Collaborate with various internal teams and the wider community to build, expand, and scale Sygmaâ€™s architecture, by tapping into new trends and opportunities highlighted by internal data, blockchain research, and the wider blockchain ecosystem</li>
</ul>
<h2>Requirements</h2>
<ul>
<li>Solid dev. experience with Golang</li>
<li>Experience working with AWS services</li>
<li>Demonstrable experience with modern Infrastructure as Code (IaC) tools (Terraform, Helm, Ansible, etc), automating deployment, and best CI/CD practices and tools.</li>
<li>Experience with monitoring and alerting tools (DataDog, Grafana, Prometheus, etc.)</li>
<li>Experience implementing distributed tracing, monitoring, and logging systems using OpenTelemetry Protocol</li>
<li>Experience building and participating in incident response systems (PagerDuty, etc) and handling the emergency response to production environment failures.</li>
<li>In-depth knowledge of distributed systems and blockchain technology.</li>
<li>Excellent communication skills with the ability to document and convey technical details clearly</li>
<li>Ability to work autonomously as well as with the wider team</li>
</ul>
<h3>As a plus:</h3>
<ul>
<li>TypeScript, Solidity, or Rust is a big plus</li>
<li>Experience with specifying, procuring, and setting up infrastructures for Blockchain validator nodes, and managing them across several blockchain networks.</li>
<li>Experience automating network deployment and testing of SmartContracts with various tools (Truffle, HardHat, Foundry, Anvil)</li>
<li>Understanding at least two of the following domains - Web Security, Web3 Security, Cloud Security, Systems Security, and Applied Cryptography.</li>
</ul>
<h2><strong>Hiring Steps</strong></h2>
<ul>
<li>Selected candidates will be invited to a 30â€“toâ€“45â€“minute screening call with one of our tech recruiters</li>
<li>Next, candidates will be invited to a 60-minute values interview with one of our team members</li>
<li>Technical 60-minute interview with one of our engineers</li>
<li>Then, candidates will be asked to complete a technical task in under 10-15 hours, but we provide up to 5 business days to complete it</li>
<li>After the completion of the test assignment call with Engineering team to discuss the results, for 60 minutes.</li>
<li>Lastly, candidates will be invited to a 60-minute interview with the hiring team members</li>
</ul>
<p><strong>Why Join ChainSafe</strong></p>
<p>Founded by developers for developers, ChainSafe is a remote-first company with an international team. We continue to provide opportunities for personal and professional growth, value autonomy and responsibility, have a results-driven environment, and offer flexible work hours.</p>
<p>We care deeply about&nbsp;<a href="https://chainsafe.io/corevalues">our values</a>&nbsp;and look for these attributes in every new team member. In addition, we recognize the benefits of cultivating a diverse team and aspire to embed respect for all people into our culture. We encourage women, the LGBTQIA+ community, people of colour, and members of any other group underrepresented in the blockchain space (or tech in general) to apply.</p>
<p><strong>How to Apply</strong></p>
<p>Please fill out the Greenhouse application form below and ensure that you attach your resume and link your Github/Gitlab profile or any software project you have contributed to (if applicable).</p>
<p></p>
<p></p>
<p>&nbsp;</p>

Senior BlockOps Engineer (Golang) - Sygma

<div>At <b>3Box Labs</b> we are on a mission to usher in a new era for the web, where data is secure, interactions are trustworthy, and relationships are the basis of connection. We're enabling online experiences that are delightful and integrated while also bolstering privacy and freeing innovation.&nbsp;Our first product,&nbsp;<a href="https://ceramic.network/" class="postings-link">Ceramic</a>, is the building block for composable data on the web and is powering thousands of the world's most ambitious applications.</div><div><br></div><div>We're backed by an incredible community and the best investors in the space (USV, Placeholder, Variant, Multicoin) who have&nbsp;<a href="https://www.notion.so/threebox/Investment-Theses-3Box-Labs-Ceramic-9b7fe3e926e44f55a22559658377b6d1" class="postings-link">deep conviction</a>&nbsp;in our mission.&nbsp;&nbsp;We are a lean, voraciously curious team from across the globe, with 5 years of expert remote work experience and frequent (and awesome) team retreats to spend time together.&nbsp;We have founded tech startups, written books, won product awards, authored patents, created Ethereum standards, and advised F100 CEOs. </div><div><br></div><div>Come help us tackle novel challenges and reinvent how data is managed online.&nbsp;<i>Every&nbsp;</i>one of our&nbsp;roles is remote first (retreat often!). We are committed to&nbsp;<a href="https://threebox.notion.site/Interview-Process-at-3Box-Labs-5bb9ba780de24d89ac907f1ba11a1aaa" class="postings-link">building a diverse and inclusive team</a> because we cannot succeed in our mission without it. People that identify with groups traditionally underrepresented in tech are particularly encouraged to apply.&nbsp;</div><div><br></div><div>As a Rust Engineer at 3Box Labs, you will contribute to the implementation of the Ceramic core protocol. You will work with a team consisting of skilled Rust engineers and some more recently picking up the art. You will get to focus on problems such as distributed consensus, peer-to-peer networking, cryptography, object-capabilities, and more.&nbsp;This position reports to our Head of Engineering.</div>

Rust Engineer

<div><b style="font-size: 24px">Who Are We?</b></div><div><br></div><div>Obol Labs is a remote-first research and software development team focused on Proof of Stake infrastructure for public blockchain networks. Specific topics of focus are Internet Bonds, Distributed Validator Technology, and Multi-Operator Validation. The core team includes +25 members spread across +14countries.</div><div><br></div><div>The core team is building the Obol Network, a protocol to foster trust-minimized staking through multi-operator validation. This will enable low-trust access to Ethereum staking yield, which can be used as a core building block in various Web3 products.</div><div><br></div><div><b style="font-size: 18px">The Network</b></div><div><br></div><div>The network can be best visualized as a work layer that sits directly on top of the base layer consensus. This work layer is designed to provide the base layer with more resiliency and decentralization as it scales. In this chapter of Ethereum, we will move on to the next great scaling challenge, which is stake centralization. Layers like Obol are critical to the long-term viability and resiliency of public networks, especially networks like Ethereum.</div><div><br></div><div>Obol as a layer is focused on scaling main chain staking by providing permissionless access to Distributed Validators. The network utilizes a middleware implementation of Distributed Validator Technology (DVT), to enable the operation of distributed validator clusters that can preserve validators' current client and remote signing configurations.</div><div><br></div><div>Similar to how roll-up technology laid the foundation for L2 scaling implementations, we believe DVT will do the same for scaling the consensus layer while preserving decentralization. Staking infrastructure is entering its protocol phase of evolution, which must include trust-minimized staking networks that can be plugged into at scale. We believe DVT will evolve into a widely used primitive and will ensure the security, resiliency, and decentralization of public networks.</div><div><br></div><div><span style="font-size: 11pt">The Obol Network develops and maintains four core public goods that will eventually work together through circular economics:</span></div><div><br></div><div><b style="font-size: 11pt">The DV Launchpad</b><span style="font-size: 11pt">, a User Interface for bootstrapping and managing Distributed Validators</span></div><div><br></div><div><b style="font-size: 11pt">Charon,</b><span style="font-size: 11pt"> a middleware Golang client that enables validators to run in a fault-tolerant, distributed manner</span></div><div><br></div><div><b style="font-size: 11pt">Obol Managers</b><span style="font-size: 11pt">, a set of solidity libraries for the formation of Distributed Validators tailored to different use cases such as DeFi, Liquid Staking, and Fractionalized Deposits&nbsp;</span></div><div><br></div><div><b style="font-size: 11pt">Obol Testnets</b><span style="font-size: 11pt">, a set of ongoing public </span><span style="font-size: 14.6667px">incentivized</span><span style="font-size: 11pt"> testnets that enable any sized operator to test their deployment before serving for the Ethereum Main net</span></div><div><br></div><div><b style="font-size: 18px">Sustainable Public Goods</b></div><div><br></div><div>Obol is inspired by previous work on Ethereum public goods and experimenting with circular economics. We believe that to unlock innovation in staking use cases, a credibly neutral layer must exist for innovation to flow and evolve vertically. Without this layer, highly available uptime will continue to be a moat.</div><div><br></div><div>The Obol Network will become an open, community-governed, self-sustaining project over the coming months and years. Together we will incentivize, build, and maintain distributed validator technology that makes public networks a more secure and resilient foundation to build on top of.</div><div><br></div><div><span style="font-size: 10pt">As a Senior Back End Engineer, this position focuses on the </span><a href="https://docs.obol.tech/api" style="font-size: 10pt" class="postings-link">Obol API</a>&nbsp;<span style="font-size: 10pt">and the </span><a href="https://goerli.launchpad.obol.tech" style="font-size: 10pt" class="postings-link">DV launchpad</a><span style="font-size: 10pt"> and their iterations. The Launchpad is the primary interface for interacting with the Obol Network, and the infrastructure to back the interface will need to mature and scale as Obol grows into its public mainnet phase. </span></div><div><br></div><div><b style="font-size: 10pt">This role aims to grow the Obol backend and chain-interfacing infrastructure into something that can be uniswap-scale. </b></div>

Senior Back End Engineer - API

<p><span style="font-weight: 400;">Our mission is to unlock the collaborative power of communities by making Web3 universally easy to use, access, and build on</span></p>
<p><span style="font-weight: 400;">Working with ConsenSys puts you at the </span><strong>forefront of an evolving paradigm</strong><span style="font-weight: 400;">, transforming our society for the better. We fundamentally believe blockchain is the next generation of technology that can lay the foundation for a more just and equitable society.&nbsp;</span></p>
<p><span style="font-weight: 400;">Blockchain tech is just over 10 years old. Ethereum itself is still a toddler and weâ€™re far from reaching our full potential. Youâ€™ll get to work on the tools, infrastructure, and apps that scale these platforms to billions of users.&nbsp;</span></p>
<p><span style="font-weight: 400;">Youâ€™ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects â€” challenging you to stay at the </span><strong>top of your game</strong><span style="font-weight: 400;">. Youâ€™ll join a network of entrepreneurs and technologists that reaches the </span><strong>edge of our ecosystem</strong><span style="font-weight: 400;">. ConsenSys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies.</span><span style="font-weight: 400;">&nbsp;</span></p>
<p><strong>About </strong><strong>MetaMask</strong></p>
<p><span style="font-weight: 400;">Weâ€™re building for a future where the internet and world economy empowers people through interactions based on consent, privacy, and free association. Where both communities and individuals flourish. To accomplish that, weâ€™re working hard to make web3 accessible for everyone around the world.</span></p>
<p><span style="font-weight: 400;">MetaMask is both a crypto wallet and a gateway to the decentralized web. Our tools help people create communities, play video games, access financial services, make payments, invest in assets, protect against economic turmoil, and more. Our browser extension and mobile platforms meet the needs of millions of users and developers across the world.</span></p>
<p><span style="font-weight: 400;">Originally a humble key manager, today MetaMask serves over</span><a href="https://techcrunch.com/2022/03/15/metamask-parent-company-consensys-raises-series-d-at-7b-valuation/?guccounter=1&amp;guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&amp;guce_referrer_sig=AQAAAA17TpZSF_aCYTb-Ju92B34bkm5hs-N4Cxdpk5lR_Ve3lZQOiYFcfqkk_oNHMu1faSa-Ht5LMGxK7LHEnzCg3bAQJH3KI8SPhqQTd31XsNZyNQ3HUFwhID8cZGy9qzjoXK7tUdxKlfXV2mikuuez0jodL5s1UMpbed6hY3dhwUQO%2523:~:text=MetaMask%252520alone%252520has%252520over%25252030,Ethereum%252520wallet%252520by%252520this%252520metric."><span style="font-weight: 400;"> </span><span style="font-weight: 400;">30 million monthly active users</span></a><span style="font-weight: 400;"> as a</span><a href="https://docs.metamask.io/guide/"><span style="font-weight: 400;"> </span><span style="font-weight: 400;">decentralized application development platform</span></a><span style="font-weight: 400;">, an</span><a href="https://medium.com/metamask/introducing-metamask-swaps-84318c643785"><span style="font-weight: 400;"> </span><span style="font-weight: 400;">aggregator of decentralized cryptocurrency exchanges</span></a><span style="font-weight: 400;">, and a decentralized identity manager.</span></p>
<p><strong>About the role</strong></p>
<p>This Backend Engineer will contribute to MetaMaskâ€™s Staking product. We are looking for creative, talented and passionate individuals who are willing to dive deep into the complexity and challenges of blockchain and web3 and help deliver best-in-class curated experiences to our users across our multiple platforms (Portfolio Dapp, browser Extension and Mobile app). As a Backend Engineer, you will help build the APIs and libraries that are needed to unify, enhance and transform our staking experiences across platforms.</p>
<p><strong>Required Skills:</strong></p>
<ul>
<li>3+ years of experience as a Backend Software Engineer working on production applications</li>
<li>Experience with Node.js back-end development (preferably Typescript)</li>
<li>Experience with, or understanding of: PostgreSQL</li>
<li>Experience working on agile projects in an Agile environment</li>
<li>Experience working in CI/CD setup</li>
<li>Excellent communication skills.</li>
<li>Writing good technical documentation.</li>
<li>Located in the Americas/able to work U.S. business hours</li>
</ul>
<p><strong>Bonus Points for any of:</strong></p>
<ul>
<li>Web3 experience, particularly with staking and/or mobile wallets</li>
<li>BSc/MSc in Computer Science or related subject</li>
<li>Experience in Typescript</li>
<li>Experience working in a distributed, remote team environment.</li>
<li>Experience with microservices architectures</li>
<li>Understanding of blockchain technology, especially Ethereum</li>
<li>Blockchain / smart contract development: Solidity / Ethereum, Web3.js or Ethers.js library</li>
<li>General interest in DevOps topics / experience with Docker and/or Kubernetes and deploying cloud infrastructure (AWS / Azure)</li>
<li>Experience with Kafka or other messaging technology</li>
<li>Experience in deploying blockchain infrastructure</li>
</ul>
<p><strong>Other skills to demonstrate:</strong></p>
<ul>
<li>Excellent verbal and written communication in English</li>
<li>Teamwork, flexibility, initiative, communication and organization</li>
<li>Willingness to constantly learn &amp; improve, challenging yourself to stay at the top of your game</li>
</ul>
<p>Donâ€™t tick all the boxes? No problem - we are looking for someone who will be excited to help realize <a href="https://github.com/MetaMask/metamask-vision">our vision and believes in our values</a>.</p>
<p><strong>About ConsenSys</strong></p>
<p>Our mission is to unlock the collaborative power of communities by making Web3 universally easy to use, access, and build on.</p>
<p>Working with ConsenSys puts you at the forefront of an evolving paradigm, transforming our society for the better. We fundamentally believe blockchain is the next generation of technology that can lay the foundation for a more just and equitable society.&nbsp;</p>
<p>Blockchain tech is just over 10 years old. Ethereum itself is still a toddler and weâ€™re far from reaching our full potential. Youâ€™ll get to work on the tools, infrastructure, and apps that scale these platforms to billions of users.&nbsp;</p>
<p>Youâ€™ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects â€” challenging you to stay at the top of your game. Youâ€™ll join a network of entrepreneurs and technologists that reaches the edge of our ecosystem. ConsenSys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies.</p>
<h4><strong>Why join ConsenSys? Here are some of the perks of being part of a unique organization like ConsenSys:</strong></h4>
<p>One of the most recognized tech companies in the blockchain ecosystem globally. A work experience at ConsenSys is a tremendous reference for your future career. ConsenSys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies.</p>
<p>The forefront of a revolution. We fundamentally believe blockchain is a next generation of technology that can lay the foundation for a more just and equitable society. You can be a part of building the digital economy of tomorrow and radically transforming our society for the better.</p>
<p>A dynamic startup environment with deep roots. We are one of the earliest blockchain companies and a leader in the space.&nbsp; Youâ€™ll join a network of entrepreneurs and technologists that reaches the edge of our ecosystem.&nbsp;&nbsp;</p>
<p>Deep technical challenges. Blockchain technology is just over 10 years old. Ethereum itself is still a toddler. There is much to be done before these platforms can scale to the order of millions or billions of users. We are building the tools, infrastructure and applications l that are pushing the technology forward.</p>
<p>Continuous learning and improvements. Youâ€™ll be constantly exposed to new concepts, ideas and frameworks from your peers and as you work on different projects â€” challenging you to stay at the top of your game.</p>
<p><span style="color: #000000;"><em data-stringify-type="italic">The salary range for US-based candidates only will be determined throughout the interview process depending on experience and skills. Candidates should anticipate a base salary (not including bonus, equity or other benefits) of $USD[$100,000-$201,000]</em></span></p>
<p><em>ConsenSys is an equal opportunity employer. We encourage people from all backgrounds to apply. We are committed to ensuring that our technology is made available and accessible to everyone. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law.</em></p>
<p><em>ConsenSys is aware of fraudulent recruitment practices and we encourage all applicants to review our best practices to protect yourself which can be found </em><a href="https://consensys.net/careers/best-practices-to-avoid-recruitment-fraud/"><em>here.</em></a></p><div class="content-pay-transparency"><div class="pay-input"><div class="description"><p><em>The salary range for US-based candidates only will be determined throughout the interview process depending on experience and skills.</em></p></div><div class="title">US pay range (not including bonus, equity or other benefits)</div><div class="pay-range"><span>$100,000</span><span class="divider">&mdash;</span><span>$201,000 USD</span></div></div></div>

NodeJS Backend Engineer

<div class="content-intro"><h3><strong>About us</strong></h3>
<p><span style="font-family: helvetica, arial, sans-serif;">Founded in 2015, OpenZeppelin is the premier crypto cybersecurity technology and services company, trusted by the most used DeFi and NFT projects in the world.</span></p>
<p><span style="font-family: helvetica, arial, sans-serif;">Our mission is to protect the open economy, safeguarding tens of billions of dollars in funds for leading crypto organizations including&nbsp;<a href="https://aave.com/" target="_blank">Aave</a>, <a href="https://www.coinbase.com/" target="_blank">Coinbase</a>, <a href="https://compound.finance/" target="_blank">Compound</a>, <a href="https://ethereum.org/en/foundation/" target="_blank">Ethereum Foundation,</a> <a href="https://thegraph.com/en/" target="_blank">TheGraph</a> and many others.</span></p>
<p><span style="font-family: helvetica, arial, sans-serif;">The OpenZeppelin team, spread across 30+ countries in the world, is responsible for creating the most popular <a href="https://github.com/OpenZeppelin" target="_blank">Open Source Library</a> for Smart Contract development in the world with over 15 million downloads! The expertise we've built along the years allowed us to uncover major security vulnerabilities for some of the most well known players in the market.</span></p>
<p><span style="font-weight: 400, style=;">With the success of our products, our security audit work, and the open source educational efforts, we are setting the industry standards for secure systems of a hyper-fast-growing industry and we're looking for more folks to help us on our mission.</span></p></div><p>As an Open Source Developer, you will join our team that works on open source libraries for the Polkadot ecosystem.</p>
<p>In this role, you will be part of a new team working with the Polkadot community to develop a new open source library of OpenZeppelin Runtimes for Polkadot. You will be part of the team working with the community to define the runtime library roadmap, and to design, implement, test, and document the runtime features and supporting components. You will also have the chance to participate and present at community events to share information on OpenZeppelinâ€™s work.<strong>What you'll be doing</strong></p>
<ul>
<li>
<p>Review smart contracts for the top decentralized applications before they get launched and present findings and vulnerabilities that the protocol can have to the client.</p>
</li>
<li>
<p>Team up with one or two auditors and review code line by line and try to hack it.</p>
</li>
<li>
<p>Working on proposals to make code easier to understand and use in the future by sharing good practices</p>
</li>
<li>
<p>Conduct open-ended research around cutting edge blockchain technologies.</p>
</li>
<li>
<p>Paid time to conduct research and contribute to OpenZeppelinâ€™s projects and knowledge</p>
</li>
</ul>
<h3><strong>You have</strong></h3>
<ul>
<li>
<p>1-3 years of Rust programming experience.</p>
</li>
<li>
<p>3+ years of experience in software engineering.</p>
</li>
<li>
<p>Strong desire to further your education about Polkadot and contribute to the blockchain space.</p>
</li>
<li>
<p>Knowledge of or experience with one or more public blockchains.</p>
</li>
<li>
<p>A degree or equivalent education in computer science.</p>
</li>
<li>
<p>Prior experience working remotely: strong personal organizational skills, a love for self-time management, and ability to work collaboratively with a team.</p>
</li>
<li>
<p>Advanced English communication skills â€” all of our internal and external communication is in English.</p>
</li>
</ul>
<h3><strong>Nice to have</strong></h3>
<ul>
<li style="font-weight: 400;">Knowledge of or experience working with Polkadot runtimes, Substrate or FRAME pallets.</li>
<li style="font-weight: 400;">Experience contributing to open source projects.</li>
<li style="font-weight: 400;">Experience presenting at blockchain or open source community events.</li>
</ul>
<h3><strong>Logistics</strong></h3>
<p>Our interview process takes place on Zoom and tends to consist of the following stages:</p>
<ul>
<li style="font-weight: 400;">
<p>Recruiter call (45 minutes)</p>
</li>
<li style="font-weight: 400;">
<p>Manager call (45 minutes)</p>
</li>
<li style="font-weight: 400;">
<p>Team member interview (1 hour)</p>
</li>
<li style="font-weight: 400;">
<p>Paid work test (lasting up to 10 days)</p>
</li>
<li style="font-weight: 400;">
<p>Reference checks</p>
</li>
</ul>
<p>Please let us know if you require any accommodations for the interview process, and weâ€™ll do our best to provide assistance.</p><div class="content-conclusion"><section class="j-content">
<div class="container">
<h3 class="requirements"><strong>Benefits</strong></h3>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Unlimited holidays ğŸ��</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Fully remote: your way of working ğŸŒ�</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Paid parental leave &amp; benefits for primary or second caregiver ğŸ’™</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Team events: onboarding tour &amp; company retreats in different locations around the world ğŸ˜�</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Work from home office equipment stipend of up to $500 USD ğŸª‘</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Monthly allowance for wellness activities ğŸ’ª</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Coworking: access to a coworking space of your choice ğŸ‘©â€�ğŸ’»</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Learning: technical training; spoken language lessons in any language of your choice (using Italki) ğŸ—£</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400; font-family: helvetica, arial, sans-serif;">Working with a global team in a fast-growing industry ğŸš€</span></li>
</ul>
<p>&nbsp;</p>
<p class="job-description"><span style="font-family: helvetica, arial, sans-serif;"><span style="font-weight: 400;">At </span><strong>OpenZeppelin</strong><span style="font-weight: 400;">, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!</span></span></p>
<p>&nbsp;</p>
</div>
</section></div>

<div><b style="font-size: 11pt">Interested in building Web 3 with us? The next few years in crypto, NFTs, and Web3 belong to builders and believers â€” not short-term speculators. At Rarible, we believe that Web 3 will spread only when teams create excellent infrastructure, fill gaps, and provide solutions that benefit communities and create a better internet for everyone. If this resonates with you, we'd love to have you on board!</b></div><div><br></div><div><b style="font-size: 13pt">Hereâ€™s why:</b><span style="font-size: 13pt">&nbsp;</span><b style="font-size: 13pt">We are looking for a Tech Lead (Java/Kotlin) API Team</b><span style="font-size: 12pt">&nbsp;</span></div><div><br></div><div><span style="font-size: 12pt">Rarible API Protocol is a set of tools for web3 developers to build rich NFT applications. It allows to trade NFTs safely, get consistent and full data about NFTs. You will develop backend services which index state from the blockchain and other sources into internal databases. One of the key challenges is to make the data consistent and reliable. You</span><span style="font-size: 13pt"> have experience and are culturally aligned with fast-moving small teams. You have worked at remote (globally distributed) startups before. You are self-driven, are comfortable wearing many hats, can ship patches and features swiftly when needed. You can identify company priorities, own them, and iterate quickly to ship the best solution.&nbsp;&nbsp;</span></div>

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