Low-Latency Java Developer for Trading Systems (AWS)

United States Digital Space LLC; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

United States Digital Space LLC in Singapore seeks a Java Developer to join our high-throughput trading systems team. Design and optimize low-latency Java applications for post-trade processing, focusing on performance and reliability.

Collaborate with traders and quants to tackle GC tuning, JVM internals, and concurrency challenges while ensuring production-ready, fault-tolerant systems.

Qualifications

• Strong commercial experience with Java (Java 8+) and AWS.
• Deep understanding of JVM internals, garbage collection, and memory management.
• Experience with concurrency, lock‑free or low‑lock designs.
• Solid Linux knowledge, including performance tuning and troubleshooting.
• Strong SQL and experience with relational databases.

Responsibilities

• Design and develop low-latency Java applications supporting post-trade processes.
• Optimize system performance across GC, threading, memory allocation, and network I/O.
• Build and maintain real-time services processing high message and transaction volumes.
• Work closely with traders, quants, and electronic trading teams to deliver performance-critical features.
• Analyze and resolve latency bottlenecks across application, JVM, and OS layers.
• Ensure systems are resilient, fault-tolerant, and production-ready.
• Participate in production support for latency-sensitive systems.

Skills

Java

AWS

JVM internals

Concurrency

Linux tuning

SQL

Job description

United States Digital Space LLC in Singapore seeks a Java Developer to join our high-throughput trading systems team. Design and optimize low-latency Java applications for post-trade processing, focusing on performance and reliability.

Collaborate with traders and quants to tackle GC tuning, JVM internals, and concurrency challenges while ensuring production-ready, fault-tolerant systems.