Staff Java Developer in Belfast

Staff Java Developer in Belfast

Belfast Full-Time 80000 - 100000 £ / year (est.) Home office (partial)
Ocho People

At a Glance

  • Tasks: Architect and maintain cutting-edge low-latency financial systems with a focus on performance.
  • Company: Join a leading tech firm revolutionising financial markets with innovative solutions.
  • Benefits: Enjoy a competitive salary, private health cover, pension contributions, and generous leave.
  • Other info: Collaborative environment with opportunities for technical leadership and career growth.
  • Why this job: Make a real impact in high-stakes financial technology alongside industry leaders.
  • Qualifications: 8+ years in software engineering with expertise in Java and low-latency systems.

The predicted salary is between 80000 - 100000 £ per year.

Location: Belfast, Northern Ireland (Hybrid – onsite Tuesdays, Wednesdays, Thursdays)

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.

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.

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 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.

Benefits

The business offers a comprehensive benefits package including pension contribution, private health cover, and generous annual leave.

Requirements

Applicants must be authorised to work in the UK on a permanent, indefinite basis.

Staff Java Developer in Belfast employer: Ocho People

Join a pioneering financial technology firm in Belfast, where you will be at the forefront of developing a cutting-edge prediction market platform. With a strong emphasis on employee growth and collaboration, the company fosters a dynamic work culture that encourages innovation and technical leadership. Enjoy a competitive salary alongside a comprehensive benefits package, including private health cover and generous annual leave, all while working with a world-class engineering team on impactful projects.

Ocho People

Contact Details:

Ocho People Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Staff Java Developer in Belfast

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Ocho People or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Ocho People.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Ocho People.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Ocho People that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Staff Java Developer in Belfast

Java
C++
Low Latency Systems
High Throughput Systems
Aeron Framework
Hydra Framework
Concurrency

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Ocho People.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Ocho People and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Ocho People

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Ocho People uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.