Senior Web3 Backend Engineer (Typescript/Node.js)

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.

• 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.

• You can work autonomously on research, spec, implementation, deployment, monitoring and patching your code
• Strong written and verbal English communication skills
• 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

• 5 years experience with either Node.js/TypeScript
• 5 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.)

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Not essential, but big bonus points:

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

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Technologies we use and teach:

• Node.js/TypeScript
• Golang/Rust
• GETH and its various Rollup forks
• libp2p
• RabbitMQ
• Redis
• PostgreSQL / TimescaleDB
• GCP (less AWS)
• Ethers.js
• Subgraphs
• Solidity

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• Work very autonomously
• Generous GEL token package
• Competitive Salary
• Work together with one of the best technical teams on Ethereum
• Build relationships with top teams which are already Gelato users, including MakerDAO, Optimism, Pancakeswap and many more
• Chance to travel the world to go to exciting events and connect with key players in this industry
• Join amazing in-person offsites all over the world

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