Our client is looking for a Senior C++ Engineer to architect, develop, and operate highly secure, high-performance custody systems that safeguard digital assets at scale.

Youll be part of the Custody Engineering Team, responsible for building mission-critical infrastructure that secures user funds across their entire lifecycle. The scope is broad and technically deep—covering blockchain integrations, smart contracts, oracles, and full-stack systems that power modern crypto custody solutions.

This role is ideal for engineers who thrive in low-latency, high-reliability environments and enjoy solving complex systems problems.

Responsibilities 

• Design, build, and maintain efficient, reusable, and reliable C++ libraries and systems
• Develop and enhance crypto custody solutions interacting directly with public blockchains
• Lead end-to-end feature development, from design to production rollout
• Own and resolve complex reliability and performance issues in high-concurrency environments
• Drive technical discussions, architectural decisions, and best practices across global teams
• Mentor engineers and lead feature development and bug-fix initiatives

Requirements:

• 5+ years of hands-on software engineering experience in FinTech, HFT, or systems programming
• Strong expertise in modern C++ (C++11/14/17+), including: STL & Boost and Template metaprogramming
• Deep understanding of Linux internals, including: Multithreading & concurrency patterns, IPC mechanisms, Performance and memory optimization

• Strong communication skills —able to explain low-level trade-offs to both technical and non-technical stakeholders
• Bachelors degree in Computer Science, Engineering, or equivalent practical experience

Why This Role?

• Work on security-critical systems protecting real digital assets
• Solve challenging problems at the intersection of blockchain and low-level systems
• High ownership, technical depth, and real architectural influence
• Collaborate with experienced engineers across global teams