Java Software Developer jobs in Belfast

Stealth iT Consulting

A prominent IT consultancy is actively searching for a talented Full Stack Engineer to join their team on a permanent basis. The ideal candidate will possess extensive experience in developing robust web applications using Java (Spring Boot), HTML, CSS, and JavaScript/TypeScript. This role offers an

Twelve

Senior Software Engineer (AI-First Development) United Kingdom, Remote The Opportunity Are you a Java expert curious about the future of engineering? Join a leading global Financial Technology firm that is redefining the software development lifecycle. While many companies are just talking about AI,

Citibank (Switzerland) AG

For additional information, please review .The Applications Development Technology Lead Analyst is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to

This job is with Warner Bros. Discovery, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Welcome to Warner Bros. Discovery… the stuff dreams are made of. Who We Are… When we say, “the stuff d

Outlier

Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. Do you want to shape the future of autonomous agents like OpenClaw? We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents.

Outlier

Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. Do you want to shape the future of autonomous agents like OpenClaw? We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents.

Black Fox Solutions

CNC Programmer Belfast £32,500 - £40,000 Black Fox Solutions are working alongside our client, based in Belfast, to recruit a CNC Programmer. As the successful CNC Programmer, you will be programming programme 3 and 5 axis CNC machines. You will maintain and update Hyper MILL Cam System including se

Citigroup Inc.

We're looking for multiple talented engineers, Server Side, to join one of our high-impact teams inside Citi's CTO organization. You'll sit within Developer Enablement, a group focused on innovation, developer platforms and internal tools used across the bank, where we experiment and ship fast like

Role Overview Enea are looking for experienced software engineers to immediately join our experienced team. Successful candidates will be enthusiastic about software development and technology and keen to learn about leading edge technologies. If you love technology and gadgets then you’ll love this

This job is with GSK, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Company Overview At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion peopl

First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the world's leading investment banks as clients, we help our clients navigate the data-driven, digital revolution that is transforming

eFinancialCareers

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 Soft

Citigroup Inc.

A global financial institution is seeking talented Server-Side Engineers in Belfast. You'll engage in high-impact projects within the CTO organization, focusing on developer platforms and internal tools. This role involves building innovative solutions using Kotlin or Java and databases like Postgre

Whiskin Precision Engineering

Duties and Responsibilities To programme 3 and 5 axis CNC machines. To maintain and update HyperMILL Cam System including set-up sheet and CAD data filing. To maintain and manage tooling system for new, used and obsolete cutters Manage the efficient manufacture of components Assist with the developm

MCS Group

.Net Software Developers (Mid-Level) Location: Belfast (Hybrid) | Type: Full-Time | Permanent MCS Group is delighted to be working with a global market leader in financial services technology that is building one of the largest and most advanced engineering hubs in Belfast. MCS have helped this comp

Job Req Id 26950936 Location(s) Belfast, Northern Ireland, United Kingdom Job Type Hybrid Posted Apr. 15, 2026 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

Warman O'Brien

Statistical Programmer II | Leading CRO | Home Based | UK | Join a fast-growing, independent CRO providing a broad range of expertise-based clinical research services to worldwide pharmaceutical, biotechnology, and medical device industries. Renowned for its high-quality deliverables, exceptional cu

GEM Programming Solutions

GEM Programming Solutions is a UK‑based specialist Biometrics CRO, delivering high‑quality statistical programming solutions to the biotech and pharmaceutical industries. Due to our continued growth, we are recruiting for permanent Senior Statistical Programmer(s) with proven SAS® and / or R program

Citi

Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer

nineDots.io

If you like building the tools that other engineers actually use every day, this is that kind of role. This company builds infrastructure that sits right in the middle of how software gets delivered. Not the UI layer. Not dashboards. The actual plumbing that engineers rely on to ship, store, and sec