C++ Low-Latency Engineer

ALLEGIS GROUP SINGAPORE PRIVATE LIMITED; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

ALLEGIS GROUP SINGAPORE PRIVATE LIMITED is seeking a C++ Low Latency Engineer to develop and optimise real-time market data platforms for real-time trading. You will work on high-performance, scalable systems designed for ultra-fast decision making.

You'll implement microsecond-level profiling and optimisations, build exchange connectivity using FIX/FAST, and modernise architectures to support global market data flows with strong reliability.

Qualifications

• Expert-level knowledge of modern C++ (C++17/20) and RAII.
• Proven experience in ultra-low-latency market data or HFT systems.
• Strong Linux kernel, memory management, and concurrency mastery.
• Experience with TCP/UDP, multicast, and custom serialization.

Responsibilities

• High-Performance Development: Write clean, resilient, and thread-safe modern C++ code optimized for microsecond-level performance.
• Latency Optimization: Profile systems to eliminate CPU bottlenecks, minimize cache misses, and reduce context switching.
• Feed Handling & Protocols: Build and maintain exchange connectivity layers utilizing FIX, FAST, and native binary wire protocols.
• Architecture Evolution: Modernize legacy real-time distribution frameworks into scalable, high-throughput hybrid architectures.
• System Telemetry: Implement microsecond-level tracing, instrumentation, and eBPF profiling to monitor data journeys.
• Production Resiliency: Provide Level 3 engineering support to debug complex, concurrent production issues and guarantee uptime.

Skills

C++17/20

Low-Latency

Linux systems

Concurrency

Network programming

Tools

FIX protocol

eBPF

Job description

A world-leading financial services organisation is seeking aC++ Low Latency Engineer to develop and optimise high-performance market data platforms which support real-time trading environments. You will work on low-latency systems designed to handle massive data volumes while delivering exceptional speed, reliability, and scalability. This opportunity is well suited to candidates interested in building infrastructure across global markets, while contributing to a fast-paced and innovative environment.

Key Responsibilities

• High-Performance Development: Write clean, resilient, and thread-safe modern C++ code optimized for microsecond-level performance.
• Latency Optimization: Profile systems to eliminate CPU bottlenecks, minimize cache misses, and reduce context switching.
• Feed Handling & Protocols: Build and maintain exchange connectivity layers utilizing FIX, FAST, and native binary wire protocols.
• Architecture Evolution: Modernize legacy real-time distribution frameworks into scalable, high-throughput hybrid architectures.
• System Telemetry: Implement microsecond-level tracing, instrumentation, and eBPF profiling to monitor data journeys.
• Production Resiliency: Provide Level 3 engineering support to debug complex, concurrent production issues and guarantee uptime.

Key Qualifications

• Modern C++: Expert-level knowledge of C++17/C++20, template metaprogramming, and RAII.
• Low-Latency Architecture: Proven track record building high-frequency trading (HFT) engines or ultra-low-latency market data systems.
• Linux Systems Programming: Deep understanding of the Linux kernel, memory management, huge pages, and CPU pinning.
• Concurrency Models: Mastery of lock-free data structures, multithreading primitives, and memory barriers.
• Network Programming: Strong experience with TCP/UDP socket programming, multicast streaming, and custom serialization.

We regret to inform that only shortlisted candidates will be notified.