Senior Java Developers

About the Company

Our client is a fast-growing global trading firm with deep expertise across traditional and digital asset markets. Built by technologists and financial engineers, their platforms are designed for scale, resiliency, and high performance. They are now establishing a new engineering hub in Belfast as part of a long‑term investment to build core trading systems and infrastructure locally.

The Belfast engineering team will initially focus on building real‑time exchange connectivity and a data synchronisation layer that will underpin a planned trading platform launch in 2026.

They are forming the first core engineering pod in Belfast starting with a Senior Java Developer who will define technical direction and engineering standards, followed by two mid‑level developers. This pod will be responsible for designing and implementing a high‑performance exchange connector layer capable of synchronising market data and order flow across multiple global crypto exchanges in real time.

As the team matures, they will add QA, Dev Ops, and support engineering roles to build a fully autonomous delivery function in Belfast.

This is a rare opportunity to join at the very start, shaping architecture, tooling, systems design, and engineering culture.

• Design and implement the exchange connector layer to interface with multiple external exchanges.
• Build real‑time data synchronisation pipelines that ensure accuracy, speed, and operational robustness.
• Optimise JVM performance for throughput, latency, and reliability in event‑driven architectures.
• Work closely with trading, risk, and operations teams to understand system requirements and deliver high‑quality solutions.
• Contribute to software design standards, code quality practices, and architectural decisions as the hub scales.

• 6‑10+ years of experience in software engineering, ideally focused on back‑end or distributed systems.
• Strong Computer Science fundamentals and sound software architecture instincts.
• Hands‑on experience building and deploying systems in cloud environments (AWS preferred).
• Ability to work in a fast‑moving, collaborative engineering environment with real ownership.
• Degree in Computer Science or related field, or equivalent professional experience.

• Shape the engineering culture and technical direction of a new Belfast hub.
• Build complex, high‑performance real‑time systems used in live trading environments.
• Direct access to technical decision‑makers – flat structure, no heavy bureaucracy.
• Flexibility, autonomy, and a culture focused on technical excellence and continuous improvement.

If you believe you meet the criteria for this role and are excited about the opportunity to help build a cutting‑edge engineering hub in Belfast, please apply via this link.

Alternatively, you can reach out to Phil Gamble directly for an informal chat via Linked In or Whats App.