9 full stack developer jobs found in Belfast

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. What We do / The Team: The  Risk Data Team  is a high-impact, globally distributed technology and data engineering unit operating at the intersection of risk management, big data, and cloud-native platform engineering. As a critical pillar within the  Institutional Data Platform (IDP)  and the...

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 banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. We enable clients to achieve their strategic financial objectives by providing them with cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity. What We do / The Team: Markets Business Risk and Control Technology Inventory team provides solutions that underpin the documentation and regulatory obligations for everything relating to e-trading within Citi. The application facilitates Inventory and Workflow solutions to 1LOD to make changes in the e-trading space with 2LOD responsible for check and challenge...

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 banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. We enable clients to achieve their strategic financial objectives by providing them with cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity. What We do / The Team: Asset Servicing Technology team is part of wider Markets Operations Technology group.  Our strategic application, ASPEN (Asset Servicing Processing Environments), provides Asset Servicing processing capabilities globally, including announcement capture, stock record capture and notifications to internal and external clients.  This is an...

Are you looking for a career move that will put you at the heart of a global financial institution? Then bring your skills in analysis, problem solving and communication to Citi Belfast Markets Operations. By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Team/ Role Overview  Dive into global finance with Citi's Markets Operations team. We're the essential link, ensuring smooth, efficient processing of trades from start to finish. You'll collaborate daily with traders, tech teams, clients, and global partners, supporting critical roles in trade lifecycle management, maintaining strong controls, and delivering excellent client service. You’ll gain hands-on experience and learn from seasoned professionals. This dynamic role offers broad exposure to Citi's markets business and a clear path for career growth. Bring...

Senior Vulnerability Management Engineer   Job Description   LSEG is seeking a  Senior Vulnerability Management Engineer   to join our internal offensive security team with focus on driving closure of penetration testing findings. This role bridges offensive security and engineering by translating penetration test results into clear, actionable remediation guidance and partnering with application and platform teams to implement secure fixes. The successful candidate has a strong penetration testing or application security background, hands on remediation experience, and the ability to coordinate multiple collaborators to reduce risk at scale. This is a highly technical, delivery focused role with responsibility for both individual findings and systemic improvements.   Key Responsibilities   Analyze   and review penetration test reports to understand technical impact, exploitability, and business risk.   Develop,...

LSEG is seeking a  Senior Penetration Tester to join our internal offensive security team. This role is hands-on and deeply technical, responsible for planning and executing penetration tests across a wide range of systems and applications. The successful candidate will be a skilled offensive security professional with a passion for uncovering vulnerabilities and improving security posture through rigorous testing and collaboration.   Key Responsibilities   Conduct in-depth penetration tests on applications, infrastructure, and cloud environments.   Take full ownership of assigned pentesting engagements end-to-end and deliver with limited oversight.    Compile technical scoping documents, track and document assessment metadata   Engagement details (who, what, when, where)   Testing team members and roles   Tools and methodologies used   Schedule and timelines...

Contract type: Permanent Location: Alderley Park, Glasgow Working style: Hybrid 50% home/office based   Job Summary Royal London is seeking a Lead Software Engineer to lead the Identity and Access Management application delivery team, CIAM, within the Digital space at Royal London. This role is focused on modern software & application engineering: designing, building and operating customer-facing and internal digital services with a strong emphasis on Azure-based application development using C#/.NET, within an Agile delivery environment. You will play a key technical leadership role within a cross-functional squad, shaping solution design and delivery while remaining hands-on. You will lead by example, building high-quality, secure, and resilient applications, while supporting and developing other engineers. This role is within a team that delivers Identity and Access Management solutions, so knowledge within this domain is essential, experience would be...

Contract type: Permanent Location: Edinburgh Working style: Hybrid 50% home/office based Closing date: 18th September 2026   Job Summary Royal London is seeking an experienced Senior Software Engineer to join one of our application delivery teams within the Digital space at Royal London. This role is focused on modern software and application engineering: designing, building and operating customer-facing and internal digital services with a strong emphasis on Azure-based application development using Angular and C#/.NET. You will be a senior member of a cross-functional squad, contributing to solution design and delivery while remaining hands-on. You will build high-quality, secure and resilient applications, support engineering best practice, and help develop less experienced engineers through mentoring and collaboration. This is an application-focused role, working closely with product, architecture, cloud and mobile teams to deliver valuable outcomes for...

End Date Wednesday 16 September 2026 Salary Range £92,701 - £109,060 We support flexible working – click here for more information on flexible working options Flexible Working Options Hybrid Working, Job Share Job Description Summary . Job Description JOB TITLE: AI Security Engineering Lead SALARY: £92,701 - £115,000 per annum (outside London)                  £107,304 - £130,000 per annum (London) LOCATION: Leeds, Bristol, Edinburgh, Manchester, London HOURS: Full-time – 35 hours WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at one of our office sites. Colleagues with disabilities can be supported with workplace adjustments including hybrid working expectations in line with our Flexibility Works policy.  What you’ll be doing… The Chief Security Office (CSO) plays a critical role in safeguarding the Group against an increasingly complex threat landscape while...