DecentralisedMessagingEngineer-Rust

Logos Messaging Team The Logos Messaging team is focused on creating communication infrastructure for a freer internet — permissionless, interoperable, and based on user consent. We're building toward a world where anyone can reach anyone on a network that no single entity controls or can take away. We cannot afford to compromise on Privacy, and "Eventual Decentralisation" is not an option. Right now we're deep in the hard problems: Bringing decentralised group messaging over MLS to all developers. This is frontier tech work — the protocols we're writing don't have established playbooks, and the tradeoffs we're navigating haven't all been mapped yet. This is where you come in. We're a small team seeking engineers who have a passion for decentralised chat and who've thought deeply about how these systems work, where they fail, and what it takes to get them right. You'll work directly on our SDK and contribute to the protocols underneath it, with real ownership over work that enables open communication. Key responsibilities Implement our messaging protocols in our reference SDK, translating protocol specs into reliable, production-quality Rust Own the API design and developer experience of the SDK surface — abstractions, ergonomics, and developer-facing documentation Contribute to messaging protocol specifications alongside the team As a member of a small team, you'll wear many hats — picking up problems outside your immediate lane, learning as you go, and growing with the team Write clear technical documentation and participate in async design discussions with collaborators across the project You will ideally have 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 i