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software engineer Belfast
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Engineering  (9) Information Technology  (6) Trainee / Entry Level  (1)
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citi
05 Mar, 2026
Full Time
Java Software Engineer
citi Belfast, UK
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. Citi Belfast is one of the largest employers in Northern Ireland with a diverse and talented team of over 4000 people from over 68 different nationalities across our four Belfast offices. We are the only global investment bank operating in Northern Ireland. Every day, our local experts interact with global teams in over 100 countries developing and supporting...
citi
05 Mar, 2026
Full Time
Senior Software Engineer - Java/Kotlin (Developer Enablement) - Vice President
citi Belfast, UK
We’re looking for multiple talented engineers Server Side , to join one of our high-impact teams inside Citi’s CTO organisation . You’ll sit within Devel oper Enablement , a group focused on innovation, developer platforms and internal tools used across the bank, where we experiment and ship fast, like a startup inside a global bank. Our mission is to save our engineers tens of minutes per day, equating to £10,000,000s of savings at Citi’s scale.       Opportunities in CTO   There are many exciting opportunities for you , and flexibility to move between multiple projects if that’s something you’d enjoy.     SDLC Automation is a greenfield project that builds on the success we’ve had in automating the SDLC and takes it further . Th is blue-sky project looks at ways we can greatly improve the SDLC process at Citi, taking ideas like grad ing engineering teams and...
citi
03 Mar, 2026
Full Time
Software Engineer (AVP) Belfast
citi Belfast, UK
Role As a Senior Engineer you will be 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 lead applications systems analysis and programming activities   About the Department Developer Engineering & Engineering Excellence Tech is a function within CTO, responsible for measuring and supporting Engineers across Citi. Our mission is to make it easy and enjoyable for software engineering teams to go from a business idea to delivering an innovative product solution. The main goals are to improve and upgrade our tools, streamline our processes, automate and strengthen our controls, and help development teams adopt modern working methods. We are an expert team to transform the working environment of the 60,000 people who make up the Citi engineering community and help them dramatically change their approach to developing software across the many...
Thales
14 Feb, 2026
Full Time
Senior Software Engineer
Thales Belfast, UK
Location: Belfast, United Kingdom Thales people architect solutions that are relied upon to deliver operational advantage at every decisive moment throughout the mission. Defence and armed forces customers rely on us to deliver the full range of defensive systems for land, sea, and air. From early warning, to threat neutralisation, our platforms cover all levels from very short-range systems, to extended protection across the entire battle-space including Airspace Mobility Solutions, Vehicles and Tactical Systems and Missile Defence, Optronics, and Radar. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the...
Thales
04 Mar, 2026
Full Time
Trainee Industrial Process Engineer - Machine Details
Thales Belfast, UK
Location: Belfast, United Kingdom Thales people architect solutions that are relied upon to deliver operational advantage at every decisive moment throughout the mission. Defence and armed forces customers rely on us to deliver the full range of defensive systems for land, sea, and air. From early warning, to threat neutralisation, our platforms cover all levels from very short-range systems, to extended protection across the entire battle-space including Airspace Mobility Solutions, Vehicles and Tactical Systems and Missile Defence, Optronics, and Radar. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the...
citi
28 Feb, 2026
Full Time
Senior UI Engineer (DevEx), VP - BELFAST
citi Belfast, UK
Role:   We're   seeking a   Senior Frontend Engineer   with a strong React/TypeScript background, passionate about   solving hard UI   challenges .   You'll   own the   UI   of our next-generation Developer   P latform @ Citi .   You’ll   be working   on   creating   a   near real-time UI   application , solving   cutting-edge   UI   problems , and even making data- visualisations.   You'll   co llaborate closely with other Software Engineers and the Product team to create bleeding-edge interfaces.     You'll   be joining a small, high-impact team challenging, changing, modernising & enhancing the experience of our 50,000 engineers globally throughout Citi's SDLC , all whilst using the latest coding tools (e.g. Claude Sonnet, Agent,   Github   Co-pilot, Cognition Devin) .     Where   you’ll   work   You’ll   sit within D evelopment   E...
citi
28 Feb, 2026
Full Time
Lead Java Engineer, Assistant Vice President
citi Belfast, UK
We are looking for a highly skilled and experienced Lead Java Engineer to drive the design, development, and implementation of robust and scalable enterprise applications. The successful candidate will possess exceptional expertise in Java development and a profound understanding of database systems, including both relational (RDBMS) and NoSQL technologies. This role involves technical leadership, architectural contributions, and mentoring junior team members, ensuring the delivery of high-quality, high-performance software solutions. Key Responsibilities Lead the architectural design, development, and implementation of mission-critical backend systems and services using Java and its ecosystem (e.g., Spring Boot, Spring Framework). Serve as a subject matter expert in database technologies, including advanced schema design, query optimization, performance tuning, and data migration strategies for both relational databases (e.g., PostgreSQL, Oracle, MySQL, SQL Server) and...
ABM
06 Feb, 2026
Full Time
Electrical Fixed Wire Testing Engineer
ABM Belfast, UK
Location: Belfast, Northern Ireland Position Type: Full-time Job Overview: As an electrical fixed wire testing engineer at ABM, you will play a crucial role in ensuring the safety and reliability of electrical installations within our client's vast manufacturing facility. Your primary responsibility will be to perform EICR inspections in accordance with industry standards and regulations. Your work will contribute to the safety and security of the facility, helping to protect both employees and assets in the event of an emergency. As an electrical fixed wire testing engineer, you will report to the compliance team. You must have good written and oral communication skills and have a high level of technical knowledge across the electrical industry. Key Responsibilities:  Perform thorough Electrical Installation Condition Reports (EICR) on various electrical systems and equipment across the client site.  Inspect and test various electrical installations, circuits, and...
citi
28 Feb, 2026
Full Time
Engineering Lead - SVP
citi Belfast, UK
The Department Developer Enablement is a function of the CTO organisation. Our mission is to make it easy and enjoyable for software engineering teams to go from a business idea to delivering an innovative product solution. The main goals are to improve and upgrade our tools, streamline our processes, automate and strengthen our controls, and help development teams adopt modern working methods. The Role We're seeking a technically versatile GenAI Full-stack Engineering Lead to join our department. You'll provide technical leadership and strategic direction, shaping the future of our software engineering efforts and promoting cultural change across the organisation. This role demands a strong understanding of software engineering best practices and the ability to instill them within a team, fostering a positive and collaborative culture. As the Engineering Lead, you’ll need to demonstrate a deep understanding of user needs and contributing to the overall product vision. Our...
citi
28 Feb, 2026
Full Time
Lead Frontend Developer (ReactJS), Assistant Vice President
citi Belfast, UK
We are seeking a talented and passionate Lead Frontend Developer with deep expertise in ReactJS to spearhead the development of our cutting-edge user interfaces. The ideal candidate will be a technical leader, responsible for guiding the frontend team, defining architectural patterns, and ensuring the delivery of high-quality, performant, and intuitive web applications. This role requires a strong command of modern JavaScript, React ecosystem, and a commitment to best practices in UI/UX development. Key Responsibilities Lead the design, development, and implementation of complex, scalable, and responsive web applications using ReactJS and its ecosystem. Define and enforce frontend architectural patterns, coding standards, and best practices to ensure consistency, maintainability, and performance across all frontend projects. Provide technical leadership, mentorship, and guidance to a team of frontend developers, fostering their growth and ensuring high-quality code...
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