Cryptography Engineer

Join a Groundbreaking AI and Cryptography Team | Barcelona, Hybrid Working Model This pioneering AI start-up is building a secure AI execution stack, combining cryptography, machine learning and cutting-edge hardware. As part of their mission, the team is now looking for an AI Cryptography Engineer to help develop privacy-preserving and verifiable AI systems using technologies like FHE, ZKML and zkSNARKs. You will work hands-on with Rust and Python, prototyping cryptographic proof systems and integrating secure inference pipelines into a custom AI OS. This is a rare opportunity to sit at the intersection of cryptography, ML and systems engineering, with real-world deployment in mind. For this AI Cryptography Engineer role, we are looking for someone with: 5 years of experience with systems-level programming in Rust (preferred) and Python Experience with at least one proof system or FHE library such as zkSNARKs, Halo2, STARKs, Concrete or TFHE Experience designing cryptographic libraries and APIs Comfortable with low-level debugging and performance optimisation Knowledge of hardware-software co-design or AI accelerator integration What Next? If you're an AI or Cryptography Engineer ready to build secure, production-ready ML systems with a high-impact team, apply today to learn more. For more information on this role, or any other jobs across AI Security, Cryptographic Engineering or Secure Systems, please contact me, Callum Allen, today.

Location: Catalonia, ES

Posted Date: 8/2/2025