Senior C++ Low-Latency Engineer - Real-Time Markets

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

Job summary

Luxoft in New York, NY seeks a C++ engineer to design and build high-performance, low-latency applications handling real-time data. You will optimize from algorithms to OS interaction, shaping latency and throughput across networking and I/O layers.

Responsibilities include building scalable C++ services, profiling, and collaborating with trading and infrastructure teams. Strong knowledge of Linux, profiling tools, and modern C++ is required; compensation ranges from $140,000 to $200,000 gross

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, etc.).
• 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

Modern C++

Market Data

Concurrency

Real-time systems

CS Fundamentals

Linux programming

Profiling tools

Git & CMake

Problem solving

Tools

CMake

Ninja

Git

Perf

Valgrind

Flame Graphs

Job description

Luxoft in New York, NY seeks a C++ engineer to design and build high-performance, low-latency applications handling real-time data. You will optimize from algorithms to OS interaction, shaping latency and throughput across networking and I/O layers.

Responsibilities include building scalable C++ services, profiling, and collaborating with trading and infrastructure teams. Strong knowledge of Linux, profiling tools, and modern C++ is required; compensation ranges from $140,000 to $200,000 gross