Senior C++ Low-Latency Engineer

Luxoft; New York (NY); On-site; USD 120,000 - 140,000; Full time

Job summary

Luxoft is seeking a C++ engineer in New York to design and build high performance, low latency applications processing large volumes of real time data. You will optimize across algorithms, data structures, networking, and OS interaction to achieve microsecond-scale throughput.

The role demands strong modern C++ (C++17/20+), market data experience, concurrency and Linux systems programming, plus proficiency in performance profiling. Collaboration with trading and infrastructure teams is essential.

Qualifications

• Strong proficiency in modern C++ (C++17/20 or later).
• Hands-on experience with Market Data.
• Solid understanding of concurrency and synchronization (lock free / low lock patterns, atomics, memory models).
• Proven experience building performance critical, real time, or low latency systems (e.g., networking, trading systems, telemetry, gaming engines, or similar).
• Strong knowledge of computer science fundamentals: data structures, algorithms, memory management, and optimization.
• Practical experience with Linux systems programming (sockets, epoll/select, threads, memory management, CPU affinity, etc.).
• Experience using profiling, benchmarking, and performance analysis tools (e.g., perf, valgrind, flame graphs, CPU/memory profilers).
• Proficiency with version control (Git) and standard build systems (CMake, Ninja, etc.).
• Excellent problem-solving skills and attention to detail; ability to work in a fast-paced environment.

Responsibilities

• Design, implement, and maintain high performance C++ services handling high message rates and low latency workloads.
• Optimize existing components for latency, throughput, and CPU/memory efficiency.
• Develop and tune networking, messaging, and I/O layers to handle large data volumes reliably.
• Profile and debug performance issues at application, OS, and network levels.
• Collaborate with quantitative, trading, and infrastructure teams (or analogous business/tech teams) to translate requirements into robust technical solutions.
• Write clean, production quality code with appropriate tests and documentation.
• Participate in code reviews, design discussions, and continuous improvement of engineering practices.

Skills

C++17/20 proficiency

Market Data experience

Concurrency and synchronization

Real-time / low latency systems

CS fundamentals

Linux systems programming

Performance profiling

Git

Build systems (CMake/Ninja)

Tools

Git

CMake

Ninja

Linux networking (sockets/epoll)

Job description

Luxoft is seeking a C++ engineer in New York to design and build high performance, low latency applications processing large volumes of real time data. You will optimize across algorithms, data structures, networking, and OS interaction to achieve microsecond-scale throughput.

The role demands strong modern C++ (C++17/20+), market data experience, concurrency and Linux systems programming, plus proficiency in performance profiling. Collaboration with trading and infrastructure teams is essential.