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DV Labs
Lisbon, Portugal
Full‑Stack Engineer (Web3 / Distributed Validators)
Lisbon, Portugal
Engineering /
Full Time /
Remote
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Who Are We?
The Obol Collective is quickly becoming the foundation of layer 1 blockchains like Ethereum through Obol Distributed Validators (DVs) — our industry leading validator technology that improves performance, lowers risks and increases rewards. We’re already securing $1B+ of ETH through key partners like Lido & EtherFi and we’re expecting continued rapid growth. We’re backed by top tier angels like David Hoffman, Anthony Sassano, Sreeram Kannan, Dankrad Feist and tier 1 investors like Pantera, Archetype, Ethereal Ventures, Placeholder and more.
DV Labs is both the first and largest contributor to the Obol Collective, including building much of the core technology behind the project.
We’re looking for a product‑minded Full‑Stack Engineer who can take UI/UX ideas, wire them to backend services, and ship features that help operators run distributed validators with confidence.
You’ll work closely with protocol & infra engineers, pulling consensus‑layer telemetry that our analytics team already prepares, and surfacing it through APIs and dashboards that delight end users.
Responsibilities
- Build end‑to‑end features with Next.js (React/TypeScript) on the front‑end and NestJS(Typescript) on the back‑end.
- Query ClickHouse and MongoDB to consume outputs from existing analytics pipelines; transform & expose that data via REST endpoints and typed client SDKs.
- Integrate consensus‑layer insights (beacon duties, attestation stats, slashing alerts) so stakers understand their validator health.
- Interact with deployed Solidity smart contracts using viem/ethers.js/web3.js to read on‑chain state or submit transactions (e.g., validator registration, withdrawal credentials updates).
- Automate testing & deployment with GitHub Actions and serverless hosting on Vercel.
- Contribute to technical road‑mapping, architecture reviews, and RFCs in our open, async‑first culture.
Requirements
- 4+ years building production full‑stack web applications.
- Advanced TypeScript skills across React and Node.js.
- Demonstrated experience designing & consuming REST APIs.
- Ability to query and optimise ClickHouse or another analytic DB, plus familiarity with MongoDB.
- Working knowledge of the Ethereum consensus layer (Beacon Chain duties, attestations, slashing conditions).
- Proven experience interacting with deployed Solidity contracts (reading state, sending signed transactions, gas estimation, event parsing).
- CI/CD mindset; you automate workflows with GitHub Actions (or similar) and treat infrastructure as code.
- Strong testing discipline: unit, integration, and E2E where it matters.
- Excellent written communication; comfortable in an async, globally distributed team.
Nice to have
- Experience with SQL
- Exposure to GraphQL (Apollo Server/Federation) — some internal services use it.
- Contributions to Ethereum client code, staking protocols, or DV research (Lido, DVT).Experience with p2p networking stacks (libp2p, gRPC) or BFT systems.
- Familiarity with container orchestration (Kubernetes) and infrastructure‑as‑code (Terraform).
- Go proficiency (many beacon‑chain tools use them).
- Data‑visualisation skills (D3.js, Recharts) for rich dashboards.
About the team
- How we work?
- Async‑first: proposals & design docs precede meetings.
- Small, senior team: high trust & ownership.
- Open‑source by default: most code and discussions are public.
- Our Values are ...
- Synergistic
- Secure
- Innovative
- Reliable
Thank you for your interest. Looking forward to building amazing stuff together!
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What does a React developer in web3 do?
A React developer in the context of web3 is a developer who is using the React JavaScript library to build user interfaces for decentralized applications (dApps) that run on the Ethereum blockchain
These dApps often use smart contracts to facilitate transactions and other interactions on the Ethereum network
Overall, the role of a React developer in web3 involves using your skills in React development to help build cutting-edge decentralized applications that leverage the power of the Ethereum blockchain
As a React developer in web3, some of your responsibilities might include:
- Integrating the dApp with the Ethereum blockchain. This might involve using tools like web3.js and Ethers.js to connect to the Ethereum network and interact with smart contracts.
- Building the user interface for a dApp using React. This could involve creating components for the various elements of the dApp, such as buttons, forms, and other input elements.
- Implementing features that are specific to decentralized applications, such as handling cryptocurrency transactions and displaying data from the blockchain in a user-friendly way.
- Collaborating with other members of the development team, such as blockchain engineers and designers, to ensure that the dApp functions properly and meets the needs of the end users.