Senior C++ Engineer — Low-Latency Systems

Luxoft; New York (NY); On-site; USD 140,000 - 200,000; Full time

Job summary

Luxoft seeks a C++ engineer in NYC to design and build high performance, low latency applications processing large volumes of real time data. You will optimize all layers from algorithms to networking and OS interaction.

Responsibilities include implementing high rate C++ services, profiling performance, and collaborating with trading and infrastructure teams. Strong C++17/20, Linux programming, and market data experience required.

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).
• 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).
• 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).
• 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 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

Market Data

Concurrency & Synchronization

Real-time/Low-latency

Data structures & algorithms

Linux systems programming

Profiling tools

Git & build systems

Tools

Perf

Valgrind

Flame graphs

CPU profilers

Memory profilers

CMake

Ninja

Job description

Luxoft seeks a C++ engineer in NYC to design and build high performance, low latency applications processing large volumes of real time data. You will optimize all layers from algorithms to networking and OS interaction.

Responsibilities include implementing high rate C++ services, profiling performance, and collaborating with trading and infrastructure teams. Strong C++17/20, Linux programming, and market data experience required.