Senior OMS Developer (Java)

Job Title: Java Developer (OMS Specialist)

Location: London (Hybrid Working)

Working Pattern: 2–3 days onsite per week

Employment Type: Permanent

Overview

A London-based financial technology organisation is seeking an experienced Java Developer to join its engineering team. The successful candidate will play a key role in the design, development, and enhancement of a high-performance Order Management System (OMS) used within a complex trading environment.

Applicants must have hands‑on experience designing and building OMS platforms. This is a non‑negotiable requirement.

Key Responsibilities

• Design, develop, and maintain Java-based applications with a focus on Order Management Systems.
• Contribute to the architecture and evolution of OMS components supporting.
• Work closely with product owners, quants, and business stakeholders to translate trading requirements into technical solutions.
• Ensure system performance, scalability, and resilience in a high‑throughput environment.
• Participate in code reviews, testing, and deployment activities.
• Support production systems and assist with troubleshooting and performance.
• Strong commercial experience with Java (Java 8+).
• Proven, hands‑on experience building and working on Order Management Systems (OMS).
• Experience within trading, investment management, or capital markets.
• Solid understanding of multi‑threaded systems and low‑latency architectures.
• Experience with RESTful APIs and distributed systems.
• Strong problem‑solving skills and attention to detail.
• Experience with Spring / Spring Boot.
• Knowledge of messaging technologies (e.g., Kafka, JMS, or similar).
• Exposure to SQL and relational databases.
• Familiarity with cloud platforms and containerisation (Docker, Kubernetes).
• Experience working in Agile / Scrum environments.
• Hybrid working model with a London office base.
• Collaborative, engineering‑led culture.
• Opportunity to work on mission‑critical trading systems with real‑world impact.

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