We are building BOB, a hybrid L2 that combines the best of Bitcoin and Ethereum. We seek an experienced Senior Cryptography Engineer to support the design, implementation, and launch of a novel BitVM bridge with Bitcoin security. The role You enjoy proactively identifying and resolving engineering problems by applying your knowledge on cryptographic techniques. You will lead the implementation and improvements around the cryptographic building blocks (SNARKs, Winternitz signatures, …) of the BitVM bridge. Working closely with the core team, you’ll contribute to research problems and be a trusted point of contact for improving BOB. What you will do Architect and build the BOB Bitcoin bridge leveraging BitVM in close collaboration with the core team.Architect and build the BOB Bitcoin security infrastructure with Babylon in close collaboration with the core team.Engage in research discussions with the core team on the BOB core protocols.Share knowledge with other team members on cryptography and Bitcoin best practices. Requirements Three years or more of hands-on Rust development experience.One year of experience of deploying protocols into production that leverage advanced cryptographic techniques (SNARKs, STARKS, MPC, …) with measurable TVL.Strong interest in Bitcoin, including Bitcoin script, BitVM, and Taproot.Excellent communication skills in a remote setting. Nice to have Background in consensus protocolsExperience with SolidityContributions to open-source projects Benefits Research-oriented teamSolve novel problemsStock optionsRemote working30-day vacationAllowance for a co-working spaceYearly retreat