Software Engineer (Web3)

Sismo leverages zero-knowledge proofs (ZKPs) to enable users to aggregate and selectively disclose personal data to apps. Our core product, Sismo Connect, is an easy-to-integrate single sign-on (SSO) that allows apps to safely access previously unreachable data. Developers can showcase apps built with Sismo Connect on the Sismo App Store.

Founded in 2021 with backing from over 130 of the biggest names in crypto, Sismo operates at the forefront of digital identity, web3 social, and zero-knowledge technology.

Our mission is to equip developers with the tools they need to empower users and unlock their social capital. We're dedicated to the developer community, providing support through easy-to-use libraries to help build the next generation of apps. Sismo was recognized in 2022 when we were featured in Vitalik Buterin’s list of most exciting projects.

When you join Sismo, you'll be part of a crypto-native team driven by a passion for privacy, decentralization, and next-gen technology. Team members are exposed to the best training, conferences, and hackathons the space has to offer. Be part of the future with Sismo.

Learn more: docs.sismo.io

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