Low-Latency Java Backend Engineer for Trading Platform

Aquariux Fintech; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Aquariux Fintech is hiring an experienced Software Engineer to join our core engineering team building and enhancing a high-performance trading platform. You will work on Order Management Systems, market data infrastructure, and exchange connectivity in a low-latency, production environment.

You will design and implement backend services in Java, optimize performance, and ensure reliability in a trading-centric technology stack.

Qualifications

• 5+ years backend development in trading/brokerage/exchange/crypto platforms
• Strong Java proficiency with concurrency and performance focus
• Hands-on experience with exchange/liquidity provider integrations
• Knowledge of order lifecycle, execution flow, and exchange connectivity
• Strong database design and performance tuning
• Production trading environment reliability experience

Responsibilities

• Design and develop high-performance backends for trading systems in Java
• Implement OMS workflows including order lifecycle and idempotency
• Integrate with exchanges and liquidity providers via trading protocols
• Develop real-time market data ingestion and event-driven systems
• Architect scalable, fault-tolerant distributed systems
• Optimize database schemas and queries for performance
• Troubleshoot production trading issues and perform root cause analysis
• Contribute to system architecture and engineering best practices
• Provide standby support for production issues when needed

Skills

Java

Concurrency

Performance tuning

Trading protocols

OMS integration

REST/WebSocket

AWS

Docker

Kubernetes

Tools

AWS

Docker

Kubernetes

Job description

Aquariux Fintech is hiring an experienced Software Engineer to join our core engineering team building and enhancing a high-performance trading platform. You will work on Order Management Systems, market data infrastructure, and exchange connectivity in a low-latency, production environment.

You will design and implement backend services in Java, optimize performance, and ensure reliability in a trading-centric technology stack.