6,678+ Lead Java Application Developer Java Web Tech Jobs in Belfast, UK — Local Employers Hiring June 2026

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Principal DevOps Engineer multiple roles

Principal DevOps Engineer (Senior Individual Contributor) FinTech | Reports to VP DevOps Our FinTech client is looking for a Principal DevOps Engineer to play a pivotal role in shaping how their engineering teams build, deploy and operate software at scale. </p ...

Java Backend Engineer Cloud & Distributed Systems

Job DescriptionMy client, a global technology company specialising in secure communications and enterprise software solutions, is hiring a Backend Software Engineer to join an established engineering team based in Belfast. This is an exciting opportunity to work on business-critical backend ...

Senior Java Engineer | Spring Boot & Cloud

Ocho is seeking a Senior Java Engineer to join their team in Belfast. The ideal candidate will have extensive experience in Java 11 and the Spring Boot ecosystem. Familiarity with containerization tools and cloud platforms like AWS and GCP is essential. This full-time role offers a competitive salary o ...

Senior Java Backend Engineer Cloud Security

Join an innovative startup in the cloud security sector as a Java/Golang Engineer, where you'll develop groundbreaking products and tackle complex engineering challenges. With a dynamic and collaborative work environment, this is your chance to be part of a rapidly growing company that values creativity and inno ...

Low Latency Java Backend Engineer – Trading

Core Java & Frameworks Strong Core Java and Spring Boot application development; experience with Java NIO (Channels, Buffers, Selectors) is expected. Low-Latency & Trading Systems Expert knowledge of FIX protocol, Market Connectivity, and low-latency programming. Messag ...

Senior Java Backend Engineer Remote Microservices

An innovative AI-driven recruitment company in the UK seeks a Software Engineer specializing in Java Backend. This position involves designing and operating scalable microservices while collaborating with a dynamic, global team. Candidates should hold an MSc in Computer Science and have over 3 years of software ...

Java Engineer Hybrid, AWS & Growth Path

A leading consulting firm in Belfast is seeking a Java Software Developer to join their Digital & Data community. This role involves applying object-oriented programming principles to design robust solutions, utilising AWS technologies, and collaborating in a cross-disciplinary environment. Candidates should hav ...

Java Engineer — Hybrid, AWS & Growth Opportunities

A leading consulting firm in Northern Ireland seeks a skilled Java Developer. In this role, you will apply Java programming principles, work with cloud technologies, and engage with various stakeholders. The ideal candidate has a minimum of 2 years of experience, strong problem-solving abilities, and a deep unde ...

Hybrid AWS Backend Engineer Golang/Java

A leading security technology company in Northern Ireland seeks a Backend Engineer to manage project lifecycles from design to deployment. The successful candidate will have at least 1 year of experience in Golang or Java, alongside knowledge of cloud platforms such as AWS or Azure. This role offers a hybrid wor ...

Senior Java Engineer FiTP (Hybrid Belfast)

Citibank (Switzerland) AG in Belfast is looking for a Java Developer (AVP) to engineer solutions for global finance. This role involves working within the Global Fixed Income Trade Processing Team, focusing on designing and developing complex distributed systems. Candidates should possess strong knowle ...

Remote Backend Engineer Core Java & Tooling

Yelp is seeking a Remote Backend Engineer to enhance their Java services used by millions of users. Responsibilities include building tools for Java services, collaborating across teams, and maintaining libraries. Candidates should be proficient in Java, Scala, or Kotlin, with experience in tool development. The ...

Senior Java Engineer Global FinTech, Hybrid

Citi is seeking a Senior Java Developer located in Belfast to help engineer the future of global finance. In this role, you will be responsible for developing and maintaining applications that influence economies globally, using advanced technologies and frameworks. The ideal candidate will possess str ...

Junior Java Engineer, Digital Engineering Belfast

EY UK is looking for a Junior Java Engineer in Belfast to join their expanding Digital Engineering team. This role involves coding new backend developments, quality assurance of program specifications, and collaborating with product teams to meet client needs. The ideal candidate will have at least 2 y ...

Java Automation Engineer | Agile, CI/CD

Kainos in Belfast is looking for a Test Automation Engineer (Associate) to be part of a dynamic team focused on delivering high-quality software. In this role, you will develop and execute automated tests, utilizing tools like Selenium and Postman, while collaborating in an agile environment. The ideal ...

Java Software Engineer – Greenfield Cloud Apps (Hybrid)

Java Software Engineer - Multiple Roles (Junior to Senior) Want to work with one of Northern Ireland's fastest-growing tech companies?Looking for a team where your input genuinely shapes the architecture and direction of projects?How about working on greenfield builds < ...

Full Stack Engineer: Build Scalable Cloud Apps with React

Overview Support CI/CD Cloud GCP Java Mobile NodeJS React React Native Spring Web UX UI Design DevOps JavaScript TypeScript Fullstack Technologie ...

Full Stack Software Engineer in Belfast Enso Recruitment

Overview Support CI/CD Cloud GCP Java Mobile NodeJS React React Native Spring Web UX UI Design DevOps JavaScript TypeScript Fullstack Technologie ...

Full Stack Rails Developer (Web & Mobile)

Experience Experience with front-end technologies such as JavaScript, HTML, and CSS. Familiarity with RESTful APIs and web services. Knowledge of database systems, particularly PostgreSQL. Experience with mobile development frameworks such as React Native or Flutter. Knowledge of cloud se ...

Lead Software Engineer in Belfast Hayward Hawk Limited

Lead Software Engineer Belfast, United Kingdom Posted 10 months ago Tech stack NoSQL Messaging Spring Framework Software Engineer SQL Kafka Java Qualifications Strong founda ...

Lead Automation Engineer in Belfast Ocho

Lead Automation Engineer Location: Belfast, United Kingdom Posted 9 months ago Job posted by our partner Jooble Tech Stack Python API TypeScript UI Automation Java Selenium QA Automation Requirements 8 yea ...

Engineering Director: APIs, Frontend & ASP.NET

Java Script Works is seeking a Technical Director of Engineering to lead and scale engineering teams in Belfast. You will be responsible for delivering secure GraphQL and RESTful APIs while guiding front-end teams on compliant React and web portal development. The ideal candidate will have a strong bac ...

Engineering Director: APIs, Frontend & ASP.NET

Java Script Works is seeking a Technical Director of Engineering to lead and scale engineering teams in Belfast. You will be responsible for delivering secure GraphQL and RESTful APIs while guiding front-end teams on compliant React and web portal development.The ideal candidate will have a strong back ...

Senior Java Backend Engineer for Real Time Trading

Ocho is seeking a Senior Java Developer in Belfast to join a small founding team in a trading technology hub. This pivotal role involves designing exchange connectivity systems and optimizing performance within a collaborative environment. With 6-10 years of experience in back-end development, candidat ...

Senior Java Engineer — GCP & Big Data (Hybrid)

VanRath is seeking an experienced Java Contractor to join their team in Belfast (Hybrid - 2 days per week onsite). The role involves developing and maintaining high-performance Java applications in a leading global FinTech organisation. Candidates should have strong experience in Java and Google Cloud Platform, ...

Principal Java Engineer: Cloud Native Architect (Hybrid)

Principal Java Engineer - Belfast (Hybrid) We're hiring a Principal Java Engineer for one of the most interesting product engineering teams in Belfast. This is a genuine principal‑level role - not a senior engineer with a better title. You'll be setting technical direction, owning architecture dec ...

Low Latency Java Backend Engineer | Spring Boot

Net2Source (N2S) is seeking an experienced Java developer in Belfast, Northern Ireland, with strong expertise in Spring Boot and microservices. The ideal candidate will have extensive experience with low-latency programming, RDBMS concepts, and CI/CD tools in a financial services environment. A bachelo ...

Backend Engineer (Golang/Java) – Hybrid Cloud Platform

A Cloud Security Platform provider based in Belfast is seeking a Backend Engineer with experience in Golang and Java to manage short-life projects from design to deployment. You'll collaborate with other teams, conduct performance analyses, and focus on cloud platforms like AWS and GCP. This hybrid role requires ...

Data Security Backend Engineer Java/ UI Development

Responsibilities Design, develop, and maintain high-quality, responsive, and performant user interfaces using TypeScript, React.js, and modern frontend technologies. Implement state management solutions (e.g., Redux, Redux Toolkit) to ensure scalable and maintainable application s ...

Cybersecurity Backend Engineer (Java/JS/Python) Cloud

MCS Group is seeking multiple Software Engineers to support a global technology organization's Cyber Security Engineering teams in Belfast. This opportunity involves designing and developing scalable backend services, APIs, and cloud-native applications in a collaborative environment. Candidates should have 3+ y ...

Senior Java Engineer — GCP & Big Data (Hybrid)

VanRath is seeking an experienced Java Contractor to join their team in Belfast (Hybrid - 2 days per week onsite). The role involves developing and maintaining high-performance Java applications in a leading global FinTech organisation. Candidates should have strong experience in Java and Google Cloud Platform, ...

Java Backend Engineer Cloud Native & Scalable Systems

A technology company in Northern Ireland is seeking a passionate Backend Engineer to join their engineering group. The ideal candidate will have at least 3 years of experience in Java development and be capable of delivering robust backend solutions. Responsibilities include architecting backend services and sup ...

Hybrid Backend Engineer — Cloud Security (Golang/Java)

Upwind Security, Inc. in Belfast is seeking an experienced Software Engineer to join our Backend Engineering team. The role involves tackling complex engineering challenges, focusing on the lifecycle of short-life projects using cutting-edge technologies such as Golang, Java, Kubernetes, and Docker. You'll co ...

Java Engineer – Flexible Work & Growth in Belfast

慨正橡扯 is seeking a Junior Java Engineer in Belfast. This role offers the chance to join a leading firm in Digital Engineering, contributing to innovative solutions in technology consulting. You'll work in a diverse team, coding backend developments and ensuring code quality. A Bachelor's degree in a rel ...

Senior Backend Java Engineer – Hybrid, Global Finance

Citibank (Switzerland) AG in Belfast is looking for Experienced Backend Java Developers to join their Tech team. You will play a key role in developing applications that support global finance, delivering solutions that impact economies and innovation. The position offers a hybrid working model, compet ...

Cloud Backend Engineer (Golang/Java) – Hybrid AWS

Upwind Security, Inc. is seeking an experienced Software Engineer to join their Backend Engineering team. This role involves solving complex engineering challenges and continuously improving solutions while working with all major cloud providers (AWS, GCP, Azure). The position operates on a hybrid mode ...

Remote Java Backend Engineer for FinTech Systems

Version 1 is looking for a Java Engineer to join their UK Digital Data & Cloud Practice in Belfast. This role involves developing backend components within a high-volume message processing environment for a client in financial services. Ideal candidates will have practical experience in Java development, micr ...

Latency Driven Backend Engineer (Java, Microservices, FIX)

Net2Source (N2S) is seeking a skilled candidate to join their team in Belfast. The role focuses on technical requirements primarily in the financial services domain, requiring strong expertise in Java and Spring Boot. The ideal candidate will excel in analytical and communication skills, with proven experienc ...

Senior Java Backend Engineer — Cybersecurity, Hybrid Belfast

Enably is looking for a Senior Java Software Engineer to join a Belfast-based cybersecurity company. This hybrid role requires 3 days a week in the office, focusing on backend systems and software quality. The successful candidate will contribute to technical direction and help maintain high code stand ...

Senior Java Engineer Belfast in Belfast Ocho

Senior Java Engineer - Belfast Belfast, UnitedKingdom Posted 9 months ago Tech stack Spring Framework, Spring Boot, Java, GCP, Amazon AWS, ecosystem, Azure Requirements I am looking for a candidate with 8 years of hands‑on software engineering experienc ...

Java Software Engineer — Cloud Risk Analytics & GenAI

Citi is seeking a Software Engineer for their Wholesale Credit Risk Analytics team in Belfast. The successful candidate will join a dedicated group, developing risk management systems and solutions supporting global stress testing functions. The role requires proficiency in Java, Spring or Apache Flink ...

Senior Java Engineer – Hybrid (Belfast) & API Expert

Job Overview We are looking for a talented and experienced Java developer to join our rapidly growing team to design and build innovative solutions for a broad range of clients. Responsibilities Design, develop, and maintain high-quality Java codebases. Participate th ...

Senior Java Engineer High Performance Trading (Remote)

Join Version 1 in Belfast as a Senior Java Engineer for our rapidly expanding Digital Data & Cloud Practice. You will develop and maintain robust backend systems using Java for high-profile clients in the financial services sector. The role demands experience with message processing systems, cloud-nati ...

AVP, Java Engineer – Credit Risk Analytics (Hybrid)

Citi is looking for a skilled Software Engineer to join the Wholesale Credit Risk Analytics team in Belfast. In this role, you will work on critical risk management systems, creating solutions to support the bank’s stress testing functions globally. The ideal candidate should have strong Java and AI to ...

Senior Java Engineer, Credit Risk Analytics – Hybrid

Citibank (Switzerland) AG in Belfast is seeking a Java Software Engineer for their Credit Risk Technology team. This role involves working on critical risk management systems and developing solutions that support the bank’s stress testing functions globally. The ideal candidate will have a strong backg ...

Junior Java Engineer — Flexible Backend & Digital Solutions

EY is seeking a Junior Java Engineer to join their Digital Engineering team in Belfast. The role involves designing and delivering backend solutions, coding new developments, ensuring code quality, collaborating with product teams, and managing live incidents. Applicants should have a Bachelor's degree in a rela ...

Java Engineer, Credit Risk Analytics AVP (Hybrid)

Citigroup Inc. is seeking a Software Engineer for its Credit Risk Technology team in Belfast. This role includes developing solutions to manage risk and requires skills in Java, cloud computing, and software development. The position offers a hybrid work model, competitive salary, and attractive benefi ...

Junior Java Engineer — Shape Digital Solutions & Growth

Ernst & Young Advisory Services Sdn Bhd in Belfast is looking for a Junior Java Engineer to join their Digital Engineering team. The role involves coding backend developments, quality assurance, and collaborating with product teams. Candidates should have a Bachelor’s degree in Computer Science and at least 2 ye ...

Senior Java Engineer — Cloud & Real Time Platforms

Ocho People is partnering with a global technology organisation to hire a Contract Senior Java Engineer in Belfast. This role involves designing and maintaining scalable Java applications while working in a hybrid model with flexibility. The ideal candidate will have strong experience in Java developme ...

Senior Java Engineer — GCP & Big Data (Hybrid)

VanRath is seeking an experienced Java Contractor to join their team in Belfast (Hybrid - 2 days per week onsite). The role involves developing and maintaining high-performance Java applications in a leading global FinTech organisation. Candidates should have strong experience in Java and Google Cloud Platform, ...

Contract Java Engineer Belfast Hybrid (Inside IR35, £550PD)

Contract Java Engineer Belfast Hybrid £550/day Inside IR35 Were hiring 2x Java Consultant Contractors to join a high-performing engineering team delivering large-scale cloud and data-driven solutions in Belfast.If you think you are the right match for the following opportunity, apply after reading the comple ...

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    Lead Java Application Developer Java Web Tech Jobs in Belfast Job Search Guide, Trends and Insights