Senior Software Engineer (Web3)

Role As a Senior Software Engineer, you will be in charge of maintaining and improving the backend infrastructure powering the entire Sismo protocol. It includes the Sismo hub, our different APIs and core packages, as well as the infrastructure behind it all. You will work closely with our smart contracts, ZK circuits, and product front-ends—as well as entirely new products. *Requirements* • 5+ years of experience building scalable applications • 2+ years working on open-source products • Strong communication skills • Conviction for crypto and privacy *Nice to have* • Experience writing smart contracts, ZK circuits, subgraphs, and other crypto tools • Experience working as a DevOps • Fluent in English (French is a bonus) *Tech stack Sismo* • Back: Typescript, Node.js • DB: PostgreSQL and DynamoDB • APIs: REST, GraphQL, theGraph • Infra: AWS infrastructure, Docker, Github Action • Smart contracts & ZK: Solidity, Foundry, Hardhat, Ethers.js, Circom • Front: React/ Next *Benefits* • Strong incentives (market salary + tokens package) • Ability to take large ownership • Remote-friendly • Participation in some of crypto’s biggest events and conferences • Become entrenched in the ZK, web3 social and identity communities