Senior Core Systems Engineer

About the Role

You will design, build, and scale core systems such as MPC signers, HSMs, and TEEs (e.g., AWS Nitro) and develop the middleware that ties them together. You will implement low-level services in Rust and other systems languages, architect distributed databases and stateful services, design protocols, optimize databases and critical workflows, and harden systems for performance, security, and correctness. You will develop secure APIs and networking, apply observability and debugging to production systems, and work with research and security to productionize cryptographic protocols.

Requirements

• 8+ years of systems engineering experience with focus on security, infrastructure, or backend
• Deep expertise in Rust with strong low-level systems programming skills
• Proven experience building distributed systems, consensus mechanisms, or networks
• Hands-on experience with HSMs, MPC, TEEs, and cryptographic key management
• Strong knowledge of SQL and NoSQL databases in high-availability environments
• Familiarity with secure networking, applied cryptography, and defense-in-depth models
• Skilled in observability, debugging, and optimizing performance at scale
• Clear communicator able to translate complex systems into practical solutions

Responsibilities

• Design, implement, and operate MPC signers, HSMs, and TEEs (e.g. AWS Nitro)
• Build low-level services and middleware in Rust and other systems languages
• Architect distributed databases and stateful services for performance and reliability
• Develop secure APIs and networking between core systems and high-level services
• Optimize resource usage, latency, and throughput across critical workflows
• Collaborate with cryptography, infrastructure, and product to bring new protocols into production
• Document core systems and support client and partner discussions

Skills