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Senior C++ Engineers

IO Tech Solutions Limited
Hong Kong / Shanghai
On-site

About this role

Hong Kong, Hong Kong SAR, Hong Kong

C++ Software Engineer (Market Data & Execution) – APAC

Location: Hong Kong / Shanghai (Relocation support available) Type: Full-Time Compensation: Highly competitive (Base + Performance)

About the Client

Our client is a premier global proprietary trading firm and active market maker, operating at the highest tier of high-frequency and systematic trading. They are currently making a massive, greenfield investment to scale their APAC trading architecture.

This is a highly confidential search. Client details will be disclosed to qualified candidates upon initial screening.

The Opportunity

We are seeking elite, high-agency C++ engineers to take direct ownership of market data ingestion and ultra-low-latency execution platforms. This is not a maintenance or back-office role. You will work directly alongside the trading desks to build systems that drive PnL.

We are looking for two specific profiles:

  • The Market Specialist: An engineer who doesn't just build connectivity for maintenance, but deeply owns, optimizes, and exploits quirky exchange features and protocol micro-syntax for low-latency advantages.
  • The Front Office Generalist: A high-agency engineer who thrives sitting directly on the trading desk, collaborating with Tier 1/Tier 2 execution traders to drive business outcomes.

What You'll Do

  • Greenfield Development: Design and build next-generation low-latency market data feed handlers and order execution gateways from scratch.

  • APAC Market Connectivity: Manage high-performance connectivity for APAC exchanges (HKEX, SGX, JPX, ASX, etc.), including protocol parsing, multicast sequencing, and order book reconstruction.

  • Direct Desk Collaboration: Work shoulder-to-shoulder with quants and traders to understand market microstructure and translate business needs into rapid technical solutions.

  • Performance Tuning: Push the limits of modern C++ (C++17/20), using lock-free data structures, kernel bypass networking (VMA/DPDK), NUMA awareness, and CPU pinning to eliminate microseconds of latency.

  • Production Ownership: Monitor, troubleshoot, and optimize systems in a live production environment under strict exchange deadlines.

  • The Hard Requirements (Strict Filters)

To be considered, you must meet the following criteria:

  • Firm Type: You must currently (or recently) work at a Tier 1/2 Prop Shop, Top HFT firm, or a smaller proprietary shop with active high-frequency/execution trading.
  • Note: We cannot consider candidates from Investment Banks, Platform Providers, Commercial Vendors, or pure Mid-Frequency (MFT) / Back-Office HFT roles.
  • Experience: 6 + years of hands-on C++ development. (We are not considering junior candidates

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