Low-Latency Java Engineer for High-Speed Trading

United States Digital Space LLC; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

United States Digital Space LLC in London is seeking a Low Latency Developer to design, implement and optimize high-performance trading software used for algorithmic execution.

The role focuses on latency-sensitive applications, secure coding and rigorous testing, with collaboration across product and engineering teams to deliver scalable platforms in a fast-moving trading environment.

Qualifications

• Strong Java expertise with low-latency patterns and performance tuning.
• Deep knowledge of OS and network tuning and mechanical sympathy.
• Experience with low-latency messaging protocols and middleware.
• FX market micro-structure knowledge and time-series databases like KDB.

Responsibilities

• Develop and deliver high-quality software for latency-sensitive trading systems.
• Collaborate with product managers, designers, and engineers to define requirements and strategies.
• Participate in code reviews and promote code quality and knowledge sharing.
• Stay informed of industry trends and contribute to technology communities.
• Adhere to secure coding practices and implement robust unit tests.

Skills

Java (Low Latency)

Lock-free / zero-allocation

OS/Network tuning

Low latency messaging

FX market knowledge

KDB time-series DB

Job description

United States Digital Space LLC in London is seeking a Low Latency Developer to design, implement and optimize high-performance trading software used for algorithmic execution.

The role focuses on latency-sensitive applications, secure coding and rigorous testing, with collaboration across product and engineering teams to deliver scalable platforms in a fast-moving trading environment.