Senior Java Engineer jobs in Belfast

You will collaborate with highly capable engineers across Belfast and the wider global engineering organisation, contributing to large scale distributed systems while helping shape engineering standards and best practices.

Job Description Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview We're looking for multiple talented engineers Server Side , to join one of our...

You will work across cutting‑edge platforms including Payment Networks, Digital Banking, Emerging Payments, and highly scalable data and analytics environments built on Google Cloud Platform, Data Lakes and Power BI. This role involves modern engineering, integration, testing, and hands‑on development within a high‑impact digital landscape.

You will take initiative to identify and own solutions to problems, and you will partner with cross-functional teams owning requirements that take into account all parties’ needs.

You will act as a resource by advising and mentoring junior engineers to continue to build the technical capabilities of our teams.

Senior Full Stack Java Engineer Are you a seasoned Full Stack Engineer who thrives on solving complex problems? Do you want to work on high-impact systems that demand clean architecture, performance, and scalability? My client is seeking a Senior Full Stack Java Engineer to join their growing engineering team. This role is ideal for someone who enjoys working across the entire stack,...

You will be part of a global engineering function responsible for delivering innovative, integrated solutions.

You will drive BDD and TDD practices, work closely with developers and product owners, and ensure that each sprint delivers high-quality, production-ready software.

Software Development Engineer III Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our...

Reports to: Technology Director / Executive Sponsor Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent Base Salary: £70,000 – £80,000 location and experience dependent + 10% company bonus scheme and sales commission scheme Why This Role Exists Serve Legal is entering a new chapter: evolving beyond compliance auditing into AI enabled,...

The Oracle Cloud Infrastructure (OCI) Offensive Security team provides OCI with the capabilities to ensure our systems and services meet the security objectives we communicate to customers. The Offensive Security group performs security assessments, vulnerability research, static and dynamic analysis research, penetration testing, red-teaming, and security tool development. We ensure the security...

You will have a truly global reach, which will provide you with new experiences and development opportunities right here in Belfast's iconic Titanic Quarter.

You will need to employ strong communication skills, necessary to effectively produce client solutions. This job description provides a high-level review of the types of work performed.

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...

You will play a key role in developing tooling for the Citi developer community using a range of technologies including Java and SpringBoot microservices on Linux on OpenShift.

You will provide expert guidance, facilitating their onboarding and maximizing their utilization of the innovative tools and platforms you help create.

Job description. Senior Java / Cloud Engineer Location: Belfast / Hybrid Eligibility: UK work authorisation required A global technology organisation operating in the payments and platform space is continuing to invest heavily in its engineering capability. With a strong presence across Northern Ireland, the focus is on building modern, scalable, cloud-native systems that support high-volume,...

You will operate as a technical adviser across multiple teams, shaping architecture, unblocking delivery, raising engineering standards, and helping systems scale in a demanding domain. Success in this role is defined by durable technical improvements, clearer architectural direction, and stronger collaboration across engineering, product, and platform functions.

Job Description Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Role As a Senior Engineer you will be responsible for establishing and implementing...

Software Engineer (Java) Experience level: 2-4 years Are you a Java engineer who enjoys building well-designed systems, writing clean code, and working on problems that actually matter? My client is looking for a Software Engineer with 2-4 years' commercial Java experience to join a collaborative engineering team working on scalable, production-grade systems. This role is ideal for someone who...

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...

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...

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 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 processing....

Senior DevOps Engineer About Our Client Our client is a rapidly growing, AI-driven technology company transforming how enterprises deliver quality software. Their agentic test automation platform helps global organisations ship faster through adaptive, resilient AI-powered testing. They are now hiring a Senior DevOps Engineer to strengthen their cloud and infrastructure capabilities. The Role...