Senior C++ Engineer - On-site Low-Latency Trading Systems

Fionics; Amsterdam; On-site; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Relocation support

Amsterdam on-site

Performance bonus

Job summary

Fionics in Amsterdam is seeking a Senior C++ Engineer to build and optimize ultra-low-latency trading systems. You will own components end-to-end, work closely with traders and quants, and contribute to measurable performance improvements in a high-rate environment.

Candidates should have strong production experience with modern C++ (C++17/20), deep systems programming, Linux, and multithreading. Nice to have: Python, FPGA exposure, and experience in HFT or market-making.

Qualifications

• Strong production experience with modern C++ (17+).
• Deep systems programming and networking fundamentals.
• Track record optimizing for low latency and performance.

Responsibilities

• Build and optimize performance-critical trading infrastructure.
• Work across modern C++ (17/20), Linux internals, and networking.
• Own systems end-to-end: design, build, measure, optimize.
• Collaborate directly with the desks your code serves.

Skills

Modern C++ (C++17/20)

Systems programming

Networking fundamentals

Linux

Multithreading

Tools

Linux tooling

Job description

Fionics in Amsterdam is seeking a Senior C++ Engineer to build and optimize ultra-low-latency trading systems. You will own components end-to-end, work closely with traders and quants, and contribute to measurable performance improvements in a high-rate environment.

Candidates should have strong production experience with modern C++ (C++17/20), deep systems programming, Linux, and multithreading. Nice to have: Python, FPGA exposure, and experience in HFT or market-making.