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Staff Java or C++ Developer

Job description.

Staff Java /C++ Engineer (Low Latency) / Belfast, Northern Ireland (New US FDI) Hybrid

Salary: Up to £120K + benefits

About the Company

Our client is building a premier prediction market platform in partnership with two of the most respected names in financial services. Operating at the frontier of financial technology, the business harnesses the scale and power of markets to produce timely, unique, and effective information discovery for leaders and decision makers.

By empowering traders to take positions on the events that shape our world, the platform generates market-driven forecasts that turn intuition into insight. This is financial technology at its most ambitious.

The Role

This is a senior, hands-on engineering position driving the evolution of low-latency, high-throughput exchange and clearing systems. You will help architect and scale core infrastructure, ensuring microsecond-level precision, financial integrity, and platform reliability at scale.

It is designed for a technical leader who thrives on solving genuinely hard problems in financial markets and can operate across system design, performance engineering, and cross-functional collaboration.

Key Responsibilities

* Architect, implement, and maintain core exchange and clearing infrastructure, ensuring the system is performant, scalable, and ultra-reliable.
* Provide technical leadership across system design patterns, frameworks, protocols, and data architectures.
* Utilise Aeron and Hydra frameworks to build ultra-low-latency and high-throughput messaging architectures.
* Handle massive data volumes efficiently, designing storage and retrieval patterns for market data, trade history, positions, and audit trails.
* Collaborate with the Product team to design technical solutions for innovative financial products.
* Participate in on-call rotations and respond to production incidents requiring deep technical troubleshooting.

Essential Criteria

* Bachelor's degree in Computer Science, Software Engineering, or a related discipline.
* 8+ years of professional software engineering experience, with significant time in high-performance, low-latency distributed systems.
* Expert-level Java or C++ proficiency, including deep knowledge of concurrency, memory management, JVM internals, and performance optimisation.
* Experience with Hydra, Aeron, or equivalent low-latency messaging frameworks.
* Proven track record building systems handling 100k+ msgs/sec throughput, sub-millisecond p99 latency, and 99.99%+ uptime.
* Experience with financial markets technology, including order books, matching algorithms, and derivatives products.

Why Join

This is a rare opportunity to work on genuinely complex, high-stakes financial technology at a company backed by household names in the industry. You will have direct influence on architecture decisions, work with a world-class engineering team, and build systems that matter.

The business offers a comprehensive benefits package including pension contribution, private health cover, and generous annual leave. This is a full-time, hybrid position based on-site Tuesdays, Wednesdays, and Thursdays in Belfast. Applicants must be authorised to work in the UK on a permanent, indefinite basis.

How to Apply

This role is being handled exclusively by Phil Gamble at Ocho People. To be considered, please reach out via:

LinkedIn or WhatsAp

All applications are treated in the strictest confidence.

What Candidates Say

"Phil took the time to really understand what I was looking for. He didn't just send me roles, he sent me the right role. The process was seamless from first call to offer." - Senior Software Engineer, placed into financial services

"Working with Phil felt like working with someone who genuinely cared about the outcome, not just filling a vacancy. I wouldn't hesitate to recommend him." - Engineering Manager, placed into a scale-up

"Phil has a rare ability to match people to culture, not just to job descriptions. He was honest throughout and made the whole experience straightforward." - Staff Engineer, placed into a fintech

 

 

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Posted
Job Details:
Belfast, County Antrim£80000 to £120000
Job reference:
Pg- staffJava_1781606963
PHIL GAMBLE

PHIL GAMBLE

Director and Principal Technology Recruiter at Ocho

Clocking in over 21 years in technology recruitment, Phil’s the man who has delivered some of the most challenging IT recruitment campaigns for software companies across the globe.

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