Senior Backend Engineer – Core Infrastructure

About the role

Fireblocks is seeking a Senior Backend Engineer to join its Core Infrastructure team. You will design and implement critical components that enable the platform to scale securely for leading financial institutions and Web3 companies.

Key responsibilities

• Design and build core backend services that support high‑throughput digital‑asset operations.
• Develop creative solutions to architectural and implementation challenges.
• Take full ownership of features from design through deployment and production support.
• Collaborate with cross‑functional teams to ensure reliability and performance at hyperscale.

Required profile

• 5+ years of strong C++ or Rust development experience.
• Proven track record designing and operating large‑scale distributed services in production.
• Hands‑on experience with AWS managed services (EC2, EKS, S3, KMS) – preferred.
• Daily use of AI coding assistants (e.g., Copilot, Cursor, Claude).
• Ability to own problems end‑to‑end, from design to production support.
• Self‑motivated learner with interest in emerging technologies.

Required skills

• C++
• Rust
• AWS (EC2, EKS, S3, KMS)
• AI coding tools (Copilot, Cursor, Claude)
• Python (advantage)
• Blockchain concepts
• Cryptography
• Multi‑Party Computation (MPC)