core java developer jobs in Newtownabbey

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Remote

Senior Java Developer

Ocho
Belfast

Senior Java Developer - 100% remote. * Salary: up to £70k + bonus+ benefits. About the Company: Our client is a global technology company operating in the payments space. They're investing heavily in their engineering capability across Northern Ireland, with a focus on building modern, scalable platforms that support businesses in managing and growing their operations. Their engineering teams...

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2 days ago

Lead Engineering Manager, Core Development Team

Belfast

As an experienced engineering manager, you will be responsible for the successful delivery of critical features within our core platform. Your primary focus will involve optimizing agile development methodologies, maintaining high code quality standards, and streamlining deployment pipelines. A core function of this position is talent management, including hiring, coaching, and developing...

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19 hours ago
Hybrid

Full Stack Java Developer

MCS Group
Belfast

MCS Group is delighted to be working with a global financial technology organisation as they expand their engineering team in Belfast with the addition of a Full-Stack Java Engineer This is an opportunity to join a highly regarded technology function within a large, established financial services environment, building robust, high-performance systems used by clients across international markets....

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a day ago

C# Developer with Python Exp

Synechron
Newtownabbey

You should have hands-on experience with version control systems, CI/CD pipelines, testing frameworks, and possess a flexible mindset to adapt to evolving project requirements. Key Responsibilities: - Design, develop, and maintain web applications primarily using C#, ensuring alignment with financial industry standards and requirements.

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5 days ago

Java Software Engineer

laurelin
Belfast

Role Overview We are seeking a Java Software Engineer to join a small, technically rigorous founding team building complex, data-intensive engineering systems. The role is remote-first, with periodic in-person collaboration in Oxford or San Francisco. The position involves close collaboration with the Founding Engineer on backend infrastructure, internal platforms, and system architecture. In...

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3 days ago
Hybrid

Contract SDET (Java)

MCS Group
Belfast

You will be working closely with developers and QA to design, build, and maintain automated test solutions in a modern engineering environment.

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2 days ago

Mid Level Java Developers ( 4 Roles )

Ocho
Belfast

You will work on platforms that demand reliability, performance and resilience, where software quality genuinely matters.

You will be involved in system design and architecture, as well as the hands on delivery of tools, reports and data feeds that enable the business to operate effectively.

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2 days ago

Senior Java Developers

Ocho
Belfast

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...

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2 days ago
Remote

Staff Software Engineer - Kotlin, Java, Python

MCS Group
Belfast

MCS Group is thrilled to be partnering exclusively with fast-growing technology company in the energy sector. They are expanding their Belfast engineering team and are looking for a Staff Software Engineer to join and hit the ground running. The company builds a platform connecting businesses with external partners, helping large-scale operations work more efficiently and reliably. Day-to-day...

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2 days ago
Remote

Principal Java Developers - Fintech

Ocho
Belfast

Principal Java Developers - Fintech The Opportunity Ocho is partnering with a fast-growing, product-led client, building out a brand-new Development team from scratch for an exciting Greenfield project. This is a hands-on role focused on designing, building, and scaling modern backend systems in a fully remote environment. Why Join? * You'll contribute to shaping the future of their product range...

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2 days ago
Remote

Principal Java Developer - Fully Remote

Ocho
Belfast

Principal Java Developer - Fully Remote The Opportunity Ocho is partnering with a fast-growing, product-led fintech that's building out a brand-new Development Centre from the ground up to deliver an innovative Greenfield payments platform. As a Principal Java Developer, you'll be hands-on in designing and developing backend, service, and portal systems that power secure, scalable payment...

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2 days ago

Senior Backend Java Developer

Ocho
Belfast

About the Company: Our client is a fast growing global trading firm building a brand new engineering hub in Belfast in 2026. Founded by a team of technologists and financial experts, the company develops advanced trading platforms and enterprise systems that operate at scale, supporting a wide range of strategies and asset classes. Having successfully navigated multiple market cycles, they're now...

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2 days ago

Mid level Java Developer

Ocho
Belfast

Mid-Level Software Engineer (Java) Exciting new FDI About the Company: Our client is a global leader in digital asset innovation, building technology that bridges traditional finance and the emerging crypto economy. Their mission is to create trusted, high-performance systems that enable institutions to seamlessly integrate digital assets into their portfolios and operations. As part of their...

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2 days ago
Remote

Principal Java Developer

Ocho
Belfast

Principal Java Engineer - NI 100% remote * Salary: up to £100k + bonus+ benefits About the Company: Our client is a leading global payments business with a strong engineering presence in Northern Ireland. Their mission is to radically and responsibly deliver value to merchants by building a next-gen, merchant-first ecosystem. With a product-centric culture and a focus on technical excellence,...

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2 days ago
Hybrid

Lead Java Developer ( Remote )

Ocho
Belfast

You will work on site three days per week alongside experienced engineers, with two days remote to allow for uninterrupted delivery.

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2 days ago
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Remote

Senior Java Engineer

Ocho
Belfast

Do you enjoy designing and building scalable backend systems in the cloud - with Java at the core and AWS powering it all? My client is looking for a Senior Java Engineer to join a highly capable engineering team working on modern, cloud-native systems. This role offers real ownership, technical depth and the chance to shape how systems are built and run on AWS. What you'll be doing Designing,...

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2 days ago
Hybrid

Senior Software Engineer - Java

Ocho
Belfast

Job description. Senior Software Engineer - Java Location: Belfast / Hybrid Eligibility: UK work authorisation required This role sits within a global technology business building large-scale platforms used by millions of people every day. You'll join a highly capable engineering team working on complex, high-throughput systems where reliability, performance, and clean design really matter. As a...

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2 days ago
Hybrid

Principal Java Engineer - Hybrid

Ocho
Belfast

You will work closely with Senior, Staff and Principal Engineers across Belfast and the wider global engineering organisation, contributing to large scale distributed systems while acting as a technical authority within the team. This role offers a strong mix of hands-on development, architectural decision making and mentorship.

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2 days ago
Remote

Principal Java Engineer

Ocho
Belfast

Company A global, product-led technology business building large-scale digital platforms used by major retail and consumer brands worldwide. This is a true product engineering environment, not consultancy or project-based delivery, with long-term ownership of complex systems operating at significant scale. The Role You'll play a key role in designing and evolving highly scalable backend services...

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2 days ago
Remote

Senior QA Engineer - Java / Microservices

Ocho
Belfast

You will work closely with backend engineers, product managers and other stakeholders to embed quality throughout the development lifecycle as the platform continues to scale and modernise.

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2 days ago
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