Low-Latency Arbitrage Developer

Appc Capital Singapore Private Limited; Hong Kong; On-site; HKD 900,000 - 1,800,000; Full time

Job summary

Appc Capital Singapore Private Limited is seeking a highly skilled quant developer to design and optimize low-latency arbitrage systems for blockchain trading across major exchanges. You will reduce tick-to-trade latency via co-location, network tuning, and self-hosted nodes, while building market data handlers and hedging logic.

The role demands 3+ years in HFT/arbitrage at a trading firm, strong C++ or Rust, and familiarity with REST, WebSocket, and FIX APIs. On-chain experience is a plus.

Qualifications

• 3+ years building HFT or arbitrage systems across multiple exchanges at a trading firm.
• Proven latency reduction in live production, with numbers.
• Bachelor’s degree or above in Computer Science, Engineering or Mathematics.
• On-chain experience: RPC, transaction signing, Hyperliquid or other DEX nodes.

Responsibilities

• Design and build a high-frequency arbitrage system across multiple exchanges.
• Reduce tick-to-trade latency through co-location, network tuning, API/WebSocket optimisation and self-hosted nodes.
• Build market data handlers, order execution and hedging logic.
• Handle partial fills, leg risk, rate limits and exchange outages.
• Monitor latency and fill quality, and build kill switches and risk limits.

Skills

C++

Rust

REST APIs

WebSocket APIs

FIX APIs

Low-latency design

Education

Bachelor’s degree in Computer Science, Engineering or Mathematics

Tools

Co-location setup

Self-hosted nodes

DEX nodes (Hyperliquid)

Job description

We are a global proprietary trading firm hiring a quant developer to build and optimise low-latency, cross-exchange arbitrage systems for Blockchain trading across CEXs and DEXs (Bybit, Hyperliquid etc.).

Responsibilities

• Design and build a high-frequency (HFT) arbitrage system across multiple exchanges.
• Reduce tick-to-trade latency through co-location, network tuning, API/WebSocket optimisation and self-hosted nodes.
• Build market data handlers, order execution and hedging logic.
• Handle partial fills, leg risk, rate limits and exchange outages.
• Monitor latency and fill quality, and build kill switches and risk limits.

Requirements

• 3+ years building HFT or arbitrage systems across multiple exchanges at a trading firm.
• Proven latency reduction in live production, with numbers.
• C++ or Rust required. Python or Go a plus.
• Skills in lock-free programming, CPU pinning, kernel bypass and Linux performance tuning.
• Knowledge of REST, WebSocket and FIX APIs, order books and perpetual futures.
• Bachelor’s degree or above in Computer Science, Engineering or Mathematics.

Strongly preferred

• On-chain experience: RPC, transaction signing, Hyperliquid or other DEX nodes.