Decentralised Messaging Engineer - Rust

Responsibilities

• Implement our messaging protocols in our reference SDK, translating protocol specs into reliable, production-quality Rust
• Own the API design and developer
• Write clear technical documentation and participate in async design discussions with collaborators across the project You will ideally have

Requirements

• You'll work directly on our SDK and contribute to the protocols underneath it, with real ownership over work that enables open communication.
• experience of the SDK surface — abstractions, ergonomics, and developer-facing documentation
• Deep familiarity with real-world instant messaging systems - you've worked on, contributed to, or spent serious time understanding how systems like Signal, Matrix, XMPP, or similar are built, where they make tradeoffs, and where they struggle •
• Experience with decentralised computing - peer-to-peer systems, distributed networks, or decentralised application infrastructure
• Comfort working directly with cryptographic primitives - signatures, ciphers, and key exchanges and an understanding of secure private messaging principles such as forward secrecy, post-compromise security, and key management Solid Rust
• experience with Web3, blockchains, open protocols, and the values that underpin them
• Experience with Post-Quantum Cryptography and its application to secure messaging •
• Experience with MLS (Message Layer Security / RFC 9420) or the OpenMLS library specifically
• Familiarity with P2P transport layers such as Waku or libp2p •
• Experience working for an open source organisation

Benefits

• A strong alignment to our principles: https://logos.co/manifesto/ Bonus points •
• Interview with Program Lead (Culture Fit) Compensation
• The expected compensation range for this role is negotiable, dependent on how we assess your skills and

Additional details