The roleYou will take end-to-end ownership of security-critical backend services, primarily using Rust and TypeScript.The role requires strong engineering judgement around secure system design, operational reliability, backward compatibility and auditability. You will work closely with cryptography and research engineers to translate new cryptographic approaches into robust production systems.

• Key responsibilitiesDesign, build and maintain production-grade backend services using Rust and TypeScript
• Own APIs and libraries with strict reliability and backward-compatibility requirements
• Develop systems that meet high standards for security, correctness and durability
• Implement secure approaches to signing, encryption, secrets management and key handling
• Take ownership of service deployment, CI/CD pipelines and containerised infrastructure
• Work with cryptography and research engineers to move new cryptographic primitives into production
• Support long-lived infrastructure used within digital asset, identity or settlement environments
• Contribute to systems designed with strong operational controls and auditability

• Essential requirementsSenior-level backend engineering experience building and operating security-critical production systems
• Strong production experience with Rust, including services that have been shipped and maintained at scale
• Strong TypeScript skills for backend services, APIs or libraries
• Experience within a digital asset or Web3 technology company
• Practical experience building systems where security and correctness are critical, such as digital asset custody, key management, identity, payments or regulated infrastructure
• Strong understanding of applied cryptography fundamentals including signing, encryption, secrets management and secure key handling
• Proven ability to build performant backend services and APIs for production environments
• Experience owning CI/CD pipelines, containerisation and service deployment using technologies such as Docker and Kubernetes