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Gelato

Senior Web3 Backend Engineer (Typscript/Node.js)

Gelato
Switzerland · Full-time · Mid-Senior
Gelato is an all-in-one Ethereum Rollup as a Service Platform built without limits. Designed to be super-fast, incredibly secure, and infinitely scalable, Gelato rollups allow anyone to build and deploy their fully serviced Layer 2 chains on Arbitrum, Optimism, Polygon, Celestia and more at a pace natively integrated with Web3's favorite tools and services like Etherscan, The Graph, Pyth, Layer Zero and many more launching a production-ready web3 development environment from the Genesis block.

What we offer:

  • Join one of the most technically robust teams in the crypto space, operating in a fully remote environment with our headquarters located in the crypto hub of Zug, Switzerland
  • Play a pivotal role in shaping the future of blockchain, by contributing to the development of Gelato's Rollup-As-A-Service Platform, already trusted by leading projects like Lisk and Astar Network
  • Dive deep into cutting-edge Web3 technologies with exposure to Gelato's premier Middleware Services stack, including Gelato Web3 Functions and Gelato Relay, foundational to top-tier applications such as MakerDAO, Connext, Abracadabra, and Pancakeswap
  • Earn and have a say with the GEL Token package, granting you a stake in the network's future and a voice in the strategic direction of the project
  • Be backed by the best, with support from world-class investors including Dragonfly, IOSG, Galaxy Digital, ParaFi, Gnosis, and renowned figures like Stani Kulechov among others, securing your position at the forefront of the Web3 revolution

Responsibilities:

  • Design and develop scalable Web3 backend APIs, enabling seamless interaction between backend and frontend applications and the blockchain, ensuring high availability and performance for millions of users worldwide
  • Develop and maintain backend services for smart contract interaction, ensuring seamless integration and communication between smart contracts and the application layer. Focus on creating robust APIs and middleware that facilitate secure and efficient interactions with the blockchain, handling tasks such as event listening, transaction processing, and on-chain data retrieval
  • Specialize in smart contract lifecycle management, from writing and deploying smart contracts to conducting automated testing and security audits. Ensure the reliability and security of smart contracts through rigorous validation processes, upgrades, and optimizations to support flawless execution on the blockchain
  • Optimize blockchain data processing, implementing efficient methods for ingesting, storing, and querying on-chain data to support real-time analytics and user-facing applications
  • Collaborate on cross-functional projects, working closely with front-end developers and product teams to integrate blockchain functionalities into user-centric applications, enhancing overall user experience
  • Implement best practices for blockchain security, staying ahead of the latest in smart contract vulnerabilities, and employing rigorous security measures and auditing processes to safeguard all deployed contracts and back-end systems
  • Advance our infrastructure-as-code approach, taking a hands-on role in the continuous integration and delivery pipelines, ensuring that all back-end services are scalable, reliable, and secure
  • Drive innovation in Web3 technologies, researching and integrating new blockchain protocols and tools to keep the platform at the cutting edge of decentralized applications

Requirements

  • You can work autonomously on research, spec, implementation, deployment, monitoring and patching your code
  • You are comfortable with Software Engineering (and a little bit of DevOps)
  • You've extensive experience in shipping production-grade code that handles thousands of user interactions/transactions
  • 4 years experience with either Node.js/TypeScript
  • 4 years experience with highly scalable Web API engineering
  • Strong experience with high throughput Database systems
  • Strong experience with maintaining scalable microservices systems
  • Good experience with distributed systems and/or container orchestration
  • Strong interest in Web3/crypto industry
  • Experience using crypto applications (e.g. Uniswap, Aave, etc.)

Not essential, but big bonus points:

  • Experience with Web3 libraries and backend development (e.g. ethers.js, viem)
  • Experience in Solidity smart contract development
  • Knowledge about the inner workings of the EVM
  • Experience with P2P systems and libraries (e.g. libp2p)

Technologies we use and teach:

  • Node.js/TypeScript
  • Golang/Rust
  • Geth and its various Rollup forks
  • Google Pub/Sub / RabbitMQ
  • Redis
  • PostgreSQL / TimescaleDB
  • GCP
  • Viem / Ethers.js
  • Subgraphs
  • Solidity

Benefits

  • Fully remote team, with team members in Zug, Paris, New York, London, Singapore, and many other cool places.
  • Competitive package with tokens
  • Chance to participate in shaping the future of web3 by working with the biggest infrastructure projects such as Optimism, Arbitrum, and Celestia
  • World-class Investors - We are backed by the community, including top-tier VCs such as Hack VC, IOSG, Animoca Brands, Dragonfly, and Galaxy Digital

Key Skills

Ranked by relevance

blockchain continuous integration high availability security audits microservices solidity
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Country Guide

Switzerland

Very high salaries and premium quality of life

Posted
Aug 04, 2025
Type
Full-time
Level
Mid-Senior
Location
Switzerland
Company
Gelato

Industries

IT Services IT Consulting

Categories

Engineering

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