Shivam Chhuneja

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How To Become A Smart Contract Auditor in {{year}}: Complete Web3 Security Career Roadmap With Patrick Collins of Cyfrin Audits

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Event: How to Become a Smart Contract Auditor with Patrick Collins

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Top 8 Smart Contract Audit Companies (2026 Updated)

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Contract Developer

Lisbon

Token Metrics is seeking a multi-talented Smart Contract Engineer to facilitate the operations of our Engineering team. As a Smart Contract Engineer, you will closely collaborate with fellow engineers and product managers to build infrastructure to bring Token Metrics privacy and scalability infrastructure to the Ethereum ecosystem. Examples of work include building a cross-chain bridge for moving assets, and implementing a Solidity smart contract to validate blocks for a private and auditable transaction system on Token Metrics.<h3>Responsibilities </h3><ul><ul><li>Design, implement, test, and deploy EVM smart contracts</li><li>Work with external auditors to evaluate security and safety of smart contracts</li><li>Take engineering projects from concept and design to production, while working with engineering leaders and the product team to create sound and realistic roadmaps.</li></ul></ul><h3>Requirements </h3><ul><ul><li>3+ years of professional software engineering experience or equivalent blockchain/smart contract development experience</li><li>Proficiency developing in Solidity; familiarity with precompiles</li><li>Understanding of software engineering and security best practices, in particular smart contract security</li><li>Experience interacting with dapps/web3</li><li>Experience shipping and taking engineering projects to production.</li></ul></ul>About Token MetricsToken Metrics helps crypto investors build profitable portfolios using artificial intelligence-based crypto indices, rankings, and price predictions. Token Metrics has a diverse set of customers, from retail investors and traders to crypto fund managers, in more than 50 countries.

Blockchain Engineer (Portugal-Remote)

Euro

Europe/Lisbon

<b>Who Are We?</b>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 27 members spread across +14 countries.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.<b>The Network</b>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.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.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.The Obol Network develops and maintains four core public goods that will eventually work together through circular economics:<b>The DV Launchpad</b>, a User Interface for bootstrapping and managing Distributed Validators<b>Charon,</b> a middleware Golang client that enables validators to run in a fault-tolerant, distributed manner<b>Obol Managers</b>, a set of solidity libraries for the formation of Distributed Validators tailored to different use cases such as DeFi, Liquid Staking, and Fractionalized Deposits <b>Obol Testnets</b>, a set of ongoing public incentivized testnets that enable any sized operator to test their deployment before serving for the Ethereum Main net<b>Sustainable Public Goods</b>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.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.<b>Mission of the role </b>Obol’s mission is to decentralize Ethereum by enabling Distributed Validators, to this end, we build dApps, smart contract integrations, SDKs, wallet integrations, and more. We need to monitor the chain, index it, report and alert on it, enable web3 developers to bootstrap Distributed Validators as part of their dapps with it, and more. The mission of this role is to enable the adoption of DVs across the entire staking community, by building software to make it easy to do so. Facilitating the deployment of <a href="https://docs.obol.tech/docs/next/sc/introducing-obol-managers" rel="noopener noreferrer nofollow ugc" target="_blank">solidity contracts</a>, incorporating more wallet types into <a href="https://goerli.launchpad.obol.tech" rel="noopener noreferrer nofollow ugc" target="_blank">UIs</a>, helping validator launcher projects <a href="https://dvt.obol.tech/#1aa31973c42c41f295667a16e2ac3ae0" rel="noopener noreferrer nofollow ugc" target="_blank">support DVs</a>, and developing <a href="https://github.com/ObolNetwork/obol-sdk-examples" rel="noopener noreferrer nofollow ugc" target="_blank">reference implementations</a> and starter kits. This role is focused on making Distributed Validators software ubiquitous and community-owned. <h3>Responsabilities</h3><ul><ul><li>Design, prototype, and develop solidity integrations facilitating the incorporation of Distributed Validators into Ethereum staking solutions. </li><li>Build tooling and documentation to make deploying DVs programmatically easy for developers. </li><li>Review pull requests and maintain open-source repositories.</li><li>Ensure a high standard of testing for all production software. </li><li>Participate in the development of the DV protocol, a smart contract-based system to allow people to run DVs with one another in a low-trust environment. </li></ul></ul><h3>Requirements</h3><ul><ul><li>Experience in solidity development</li><li>Experience creating Ethereum applications, from front-end to contracts,  with production use. </li><li>Ideal Time zone from GMT-8 to GMT+3. </li></ul></ul><h3>Nice to have</h3><ul><ul><li>Public GitHub contributions to high-quality projects in the Ethereum or broader Web3 space.</li><li>Experience in serving real-time and historical chain data at scale to a front end. </li><li>Experience with wallet integration.</li><li>Experience running an Ethereum validator or node.</li></ul></ul><h3>Benefits</h3><ul><ul><li>Competitive compensation</li><li>Annual Global Off-site</li><li>Annual opportunity to attend DevCon (or a blockchain conference of choice)</li><li>Unlimited paid time off</li><li>Budget for personal equipment</li><li>Budget for training or education</li></ul></ul>We are a remote first company hiring around the world. Join us ❤️Thank you for your interest. Looking forward to building amazing stuff together!

Web3 Engineer (Solidity)

<p>We are MoonPay. Architects of the future, inventors, artists, and authors of innovation.</p>
<p>Our vision? To unlock digital ownership for everyone. We are onboarding the world to web3, where people can own and control their digital identity, data, property, and money.</p>
<p>MoonPay is the world’s leading web3 infrastructure company. We provide end-to-end solutions for payments, enterprise-scale smart contract development, and digital asset management. Many of the world's most iconic brands rely on MoonPay to power their web3 strategies and ideas.</p>
<p>Now boarding the next generation of leaders. Come help us build what's next.</p>

<h3><strong>What you’ll do 👀</strong></h3>
<ul>
<li>Work closely with product managers and developers to optimise various parts of the product through strategy and planning, measurement frameworks, reporting and (advanced) analysis. </li>
<li>Build robust data models downstream of backend services and external data sources.</li>
<li>Design, build and scale both  internal and external data products, which drive informed decision making; examples include dashboards, reports, models, algorithms, integrations into other product lines.</li>
<li>Understand the product and business through data analysis; provide recommendations and insights to drive growth and progress.</li>
<li>Oversee and implement A/B tests and other experiments to drive forward optimization efforts.</li>
<li>Collaborate cross-functionally across Product, Operations, Engineering, and others. </li>
<li>Collaborate with the finance team and the crypto engineering team to conduct investigations into areas such as issues with crypto delivery.</li>
<li>Communicate complex concepts and results to both technical and non-technical audiences (across different teams).</li>
</ul>
<h3><strong>As a Senior you will be expected to:</strong></h3>
<ul>
<li>Independently lead projects to from end-to-end</li>
<li>Mentor and coach other data analysts on the team, </li>
<li>Contribute to our overall approach and standards within the data discipline.</li>
<li>Be proactive in spearheading initiatives to support stakeholders and business partners around the organisation. </li>
</ul>
<h3><strong>You should apply if ✅</strong></h3>
<ul>
<li>Advanced SQL, data modelling, and data visualization tools are second nature to you</li>
<li>You have a deep understanding of the fundamentals of statistics and probability, including experience in conducting large-scale A/B tests</li>
<li>You have experience working with product teams and/or within product-led organisations</li>
<li>You have the versatility and willingness to learn new technologies on the job and adapt quickly to changing priorities within a very dynamic environment </li>
<li>You are experienced in communicating with cross-functional stakeholders including product managers, engineers, VP &amp; C-level executives</li>
<li>5+ years experience as a data analyst</li>
</ul>
<h3><strong>Bonus points if:</strong></h3>
<ul>
<li>You have experience working in fintech</li>
<li>You have experience working in start-ups or scale-ups</li>
<li>You have knowledge of cryptocurrency</li>
<li>You have worked with DBT, Google BigQuery, and Looker</li>
<li>You have experience doing on-chain data analysis</li>
</ul>

<h3><strong>Perks:</strong></h3>
<ul>
<li>Equity package 📈</li>
<li>Unlimited holidays 🏝</li>
<li>Paid parental leave 👶 🍼</li>
<li>Home office setup allowance 🪑</li>
<li>Working in a disruptive and fast-growing industry where the possibilities are endless 🚀</li>
<li>Freedom, autonomy and responsibility 💪</li>
</ul>

<h3><strong>Commitment to diversity:</strong></h3>
<p>At MoonPay we believe that every voice matters. We strive to create a mindful and respectful environment where everyone can bring their authentic self to work, and experience a culture that is free of harassment, racism, and discrimination. That’s why we are committed to diversity and inclusion in the workplace and are a proud equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including, but not limited to, hiring, recruiting, promotion, termination, layoff, and leave of absence.</p>
<p>MoonPay is also committed to providing reasonable accommodations in our job application procedures for qualified individuals with disabilities. Please inform our Talent Team if you need any assistance completing any forms or to otherwise participate in the application process.</p>

Senior Product Data Analyst

Web3 Contract Developer jobs in Lisbon, Portugal and other crypto companies

Browse many opportunities Web3 Contract Developer Jobs in Lisbon, Portugal at. Apply now. updated June 2026!

Job Title	Company Name	Salary	Location	Tags
Blockchain Engineer (Portugal-Remote)	Token Metrics	120k-180k/year		RemoteWeb3DeveloperEngineering
Web3 Engineer (Solidity)	Obol		📍 Lisbon, Portugal	Web3RemoteNon TechResearch
Senior Product Data Analyst	MoonPay		📍 London, Lisbon	AnalystOperationsDeveloperEngineering

Web3 Contract Developer Jobs in Lisbon, Portugal

Expired Contract Developer Jobs.

Past and filled jobs:

Blockchain Engineer (Portugal-Remote)

Token Metrics

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