Senior C++ Engineer — Low-Latency Trading Systems

Leadingnation; Hong Kong; On-site; HKD 900,000 - 1,400,000; Full time

Job summary

Leadingnation in Hong Kong is seeking a Senior C++ Engineer to design, develop, and optimize core real-time trading infrastructure. You will work on latency-sensitive components, ensure code quality, and collaborate with cross-functional teams to deliver robust and scalable solutions.

The role emphasizes hands-on coding, debugging, and performance tuning, with mentoring of junior engineers. Prior trading systems experience is highly preferred and you will participate in reviews, profiling, and

Qualifications

• 7+ years of experience in C++ system-level development, ideally C++17 or newer.
• Proven experience designing low-latency, high-throughput, and highly available systems.
• Deep understanding of threading models, memory layout, lock-free data structures, and CPU/cache behavior.
• Proficiency with system-level debugging and profiling tools (perf, gdb, valgrind, sanitizers).
• Experience writing technical design documents and leading system-level architectural discussions.
• Strong communication skills and ability to collaborate across backend and frontend teams.
• Experience mentoring engineers and leading large-scale system design.
• Experience in networking protocols (TCP, UDP, WebSockets) support.
• Familiarity with event-driven architectures, asynchronous processing, and message queues/brokers (ZeroMQ and/or Kafka).

Responsibilities

• Collaborate with traders and project managers to understand mission-critical trading apps.
• Develop and maintain high-performance C++ components for real-time data processing and event handling.
• Contribute to system design decisions around memory management, concurrency, error recovery, IPC.
• Work with backend and frontend engineers to design efficient APIs and system boundaries.
• Conduct in-depth code reviews focusing on performance, correctness, and maintainability.
• Identify performance bottlenecks and lead profiling and optimization.
• Mentor junior and mid-level engineers on design patterns, performance, and C++ best practices.
• Contribute directly to feature implementation, maintenance, and system improvements.
• Stay informed on industry trends and advancements in trading infra and real-time systems.
• Foster a culture of technical ownership and transparency.

Skills

C++ system-level

Low-latency systems

High-throughput systems

Concurrency & threading

Profiling & debugging

Networking protocols (TCP/UDP/Webs)

Mentoring engineers

System design leadership

Tools

perf

gdb

valgrind

sanitizers

ZeroMQ

Kafka

Prometheus

Grafana

OpenTelemetry

gRPC

Job description

Leadingnation in Hong Kong is seeking a Senior C++ Engineer to design, develop, and optimize core real-time trading infrastructure. You will work on latency-sensitive components, ensure code quality, and collaborate with cross-functional teams to deliver robust and scalable solutions.

The role emphasizes hands-on coding, debugging, and performance tuning, with mentoring of junior engineers. Prior trading systems experience is highly preferred and you will participate in reviews, profiling, and