Sismo is hiring a
Web3 Backend Engineer (Typescript)

Compensation: $36k - $90k *

Location: Île-de-France Paris France

Sismo is a modular attestation protocol that oversees the issuance of ZK Badges (non-transferable tokens or SBTs). We were recently featured in a list of Vitalik Buterin’s most exciting projects. We stand at the crossroads of zero-knowledge proofs, digital identity, and web3 social.

ZK Badges issued by the Sismo protocol are privacy-preserving tokenized attestations. They allow users to leverage social capital from imported web2 and web3 accounts—ensuring they can selectively reveal facts about their identities to access particular applications or services. Picture a Proof of Contributions ZK Badge that does not reveal the exact contributor or an Ethereum Twitter Influencer ZK Badge that does not reveal the exact Twitter account.

As ZK Badges are tokens adhering to the ERC1155 standard, they can be integrated into any application (web2 or web3) as an access control and reputation curation tool.

Our tightknit team of crypto natives has been working on Ethereum since 2015 (ex Aave, EthCC, Kleros, ConsensSys). To realize our vision, we raised $10,000,000 from some of the biggest names in crypto (angels from Lens, Optimism, Starkware, the Ethereum Foundation, Curve, Aave, Snapshot, Guild, and top VCs like Framework, Delphi, IDEO or Seedclub Ventures).

Team members are exposed to the best training, conferences, and hackathons the space has to offer.

You can expect to join a small, mission-driven team passionate about privacy, decentralization, and the technology that will power the future of the web.

Learn more:



As a Web3 Backend engineer, you will work on various subjects in strong collaboration with the team from conception to maintaining production.

You will be in charge of:

  • Adding new features to improve the Sismo Protocol
  • Creating the best dev experience on top of the Sismo Protocol
  • Adding new ways to fetch on-chain data
  • Creating SDK and libraries for the Sismo Protocol
  • You love to imagine and build clean and scalable software
  • You are excited to build open source software
  • You like writing high-quality and documented open-source code
  • You like to handle complexity in a elegant manner
  • You worked on a project that went into production
  • You communicate clearly inside the team
  • You are a seasoned crypto-native or a passionate newcomer to web3 with strong conviction for web3, Ethereum, and ZKP
  • Eagerness to grow and improve

Nice to haves

  • +2-6 years experience in building web app
  • Entrepreneurial experience/side projects
  • Experience in handling large amount of data
  • Communicate externally, through Github, conferences or Twitter/blog posts
  • Experience in building npm packages
  • Fluent in English (French is a bonus)

Tech stack Sismo

  • Typescript, Node.js, npm packages
  • The Graph, Dune analytics, blockchain data APIs
  • Bigquery, SQL, noSQL
  • REST, GraphQL API
  • AWS infrastructure, Docker, Github Action
  • Solidity, Hardhat, Ethers.js
  • Circom
  • Rust

The Sismo team is deeply dedicated to the development of Sismo Protocol and aggressively builds to see-through our mission… and we have great benefits for those who join us:

  • Strong incentives (Salary + Tokens)
  • Remote-friendly
  • Participation in some of crypto’s biggest events and conferences
  • Become entrenched in the ZK community

When applying, mention the word CANDYSHOP to show you read the job post completely. This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they are human RMzQuMjI5LjYzLjI4M

Apply now:

This job is closed

Compensation: $36k - $90k *

Location: Île-de-France Paris France

This job is closed

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