Senior C++ Real-Time & Low-Latency Systems Engineer

Luxoft; New York (NY); On-site; USD 120,000 - 190,000; Full time

Job summary

Luxoft is seeking a C++ engineer to design and build high performance, low latency applications that process large volumes of real time data. You will optimize every layer from algorithms to networking and OS interaction.

Responsibilities include developing fast C++ services, profiling, tuning networking I/O, and collaborating with trading and infrastructure teams to deliver robust technical solutions with production-quality code.

Qualifications

• Strong proficiency in modern C++ (C++17/20 or later).
• Solid understanding of concurrency and synchronization (lock free / low lock patterns, atomics, memory models, etc.).
• Practical experience with Linux systems programming (sockets, epoll/select, threads, memory management, CPU affinity, etc.).
• Experience building performance critical, real time, or low latency systems (networking, trading systems, telemetry).
• Proficiency with version control (Git) and standard build systems (CMake, Ninja).
• Excellent problem-solving skills and attention to detail in fast-paced environments.

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 tests and documentation.
• Participate in code reviews, design discussions, and continuous improvement of engineering practices.

Skills

C++17/20

Concurrency

Low latency

Networking

Linux systems programming

Performance profiling

Git

CMake

Tools

Git

CMake

Ninja

Job description

Luxoft is seeking a C++ engineer to design and build high performance, low latency applications that process large volumes of real time data. You will optimize every layer from algorithms to networking and OS interaction.

Responsibilities include developing fast C++ services, profiling, tuning networking I/O, and collaborating with trading and infrastructure teams to deliver robust technical solutions with production-quality code.