1,199+ Frontend Web Developer React Java Backend Jobs in Belfast, UK — Local Employers Hiring June 2026

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Frontend Web Developer — React + Java Backend

Citigroup Inc. is seeking a motivated Front‑end Web Developer to join our development team in Belfast. The ideal candidate will work closely with a team to build, test, and maintain web applications, primarily using React on the frontend and Java on the backend. Responsibilities include developing user ...

Frontend Web Developer React | Hybrid & Growth

Citibank (Switzerland) AG is looking for a Front-End Web Developer in Belfast, UK. This role offers a hybrid work model with the opportunity to build innovative web applications using React. The ideal candidate will have experience in Java and will work closely with a collaborative team. In addition to ...

Backend Java Developer

Qualifications Experience with Java NIO components like Channels Buffers and Selectors is expected Expert knowledge of FIX protocol Market Connectivity and Low latency programming is a must Very strong in Java and Spring Boot based application development Experience with m ...

Frontend Developer (Drupal / Web Components)

Front-End Developer (Drupal / Web Components) Remote (UK-based) 6 months + (potential to go permanent) Outside IR35 We're working with a prestigious global professional membership body and long-standing client in the financial sector, and ...

Frontend Developer React / TypeScript in Belfast Ocho

Salary £70,000 - 70,000 per year Requirements I have 3 years of experience in frontend development with React & TypeScript. I possess experience in API design and frontend performance optimization. I have a strong understanding of modern UI frameworks and best practices... Te ...

Frontend Engineer in Belfast Ocho

Job Requirements 3 years of experience in frontend engineering using React and TypeScript A strong understanding of web technologies, including HTML, CSS, and JavaScript Experience with WebGL or similar graphics libraries Proven experience with API design and collabor ...

Backend Engineer, Developer Enablement (Java/Kotlin)

A global financial services firm in Belfast is seeking a server side engineer to join its Chief Technology Office. This role emphasizes driving solutions within projects like SDLC Automation and Release on Demand, enhancing productivity for 30k engineers. The ideal candidate will write quality code in Kotlin or ...

Web Developer

Website Developer | WordPress, PHP, Front-End | Acquired Property Advice Platform with 3M Visits a Year Salary: £35k-£42k Location: Remote with occasional team meetings Right to work: Must hold UK right to work My client is the ...

Software Developer

Software DeveloperLocation: Northern Ireland (Hybrid working)Interview Location: Belfast (travel expenses not paid)Contract: 6‑month contract with a view to permanentRate/Salary: Hays is recruiting a Software Developer for a Northern Ireland–based organisation offering hybrid working. This role ...

React & TypeScript Frontend Engineer

Salary £100,000 - £100,000 per year Requirements 3 years of experience in frontend development using React and TypeScript. Strong knowledge of modern frontend architecture and best practices. Experience with API design and integration. Familiarity with ...

Senior C/C++ Developer (with Java experience) in Belfast Version 1

Senior C/C++ Developer (with Java experience) Belfast, UnitedKingdom Posted 9 months ago Tech stack Java C TypeScript JavaScript Windows React Requirements Development on a Windows en ...

Full Stack Engineer: Enterprise Cloud & Data (Hybrid)

A high-growth cloud consultancy in Belfast seeks a Full Stack Engineer to deliver robust, data-driven applications. This role involves both frontend and backend development, requiring strong Java or Python experience and familiarity with React. You'll work closely with cross-functional teams, improve system perf ...

Senior Frontend Engineer | Principal Frontend (React + TS)

A growing engineering team in Belfast is looking for Principal and Senior Frontend Engineers to develop high-performance applications. Candidates should have strong experience with the React ecosystem, RESTful APIs, and be skilled in CI/CD and AWS. This role is crucial in scaling the company's new product and pr ...

Hybrid Full Stack Java/Python Developer in Belfast

TELSTRA Associates is seeking a Full Stack Java Developer for a contract role based in Belfast. This hybrid position requires onsite work 3 days a week. The role involves designing and maintaining scalable applications using Java, Python, or Go, and engineering cloud-native solutions on AWS and GCP. Th ...

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 ...

Full Stack Engineer

Direct message the job poster from Net2Source (N2S) About Us Net2Source Inc. is one of the fastest growing diversities certified global workforce solutions companies with an unprecedented YoY growth of over 100% for last 6 years working with Fortune 1000/Global 2000 across 34 countries an ...

Front End Web Developer

Job Summary We are seeking a motivated Front‑end Web Developer to join our development team. The successful candidate will work alongside experienced developers to build, test, and maintain web applications using React on the frontend and Java on the backend. This role is ideal for someone lookin ...

Cloud Native Full Stack Dev (Java/Python/Go) – AWS/GCP

Dianaduggan is seeking a Full Stack Developer (Java / Python / Go) in Belfast for a leading global financial institution. The candidate will play a critical role in transforming technology in a hybrid multi-cloud environment, primarily leveraging AWS and Google Cloud. Key responsibilities include desig ...

Java Developer

MCS Group | Your Specialist Recruitment Consultancy This range is provided by MCS Group | Your Specialist Recruitment Consultancy. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base Pay Range MCS Group is thrilled to partner with ...

Java Developer

Job title: Java Developer - Regulatory Reporting (Capital Markets) Location: Belfast, Northern Ireland Work Mode: Hybrid (3 Days Onsite) Duration: Contract until Feb 2027 Must-Have Skills 5+ years of Java Development experience Strong hands-on experience w ...

Java Developer

About the Role You'll be working on the backend of systems that move money; payment processing engines, merchant integration services, and the microservices that orchestrate transactions across multiple payment rails. This means designing APIs that handle edge cases gracefully, building services ...

Java Developer

Salary: £30,000 - 60,000 per year Requirements I am looking for a Java Developer with at least 5 years of hands‑on experience in Java development. You should have strong expertise in multi-threading, web application development, and testing frameworks. Familiarity with DevOps too ...

Senior Developer (Typescript and Python)

MCS Group delighted to be working with an innovative and rapidly growing technology organisation as they look to appoint a Senior Software Developer to join their expanding engineering team in Belfast. This is an excellent opportunity for an experienced engineer who enjoys working across complex sys ...

Remote Frontend Engineer React & TypeScript

A leading technology provider is seeking a Front End Software Engineer to join their team in Belfast. The role involves working on dynamic web ordering platforms and requires 3+ years of experience. Skills in React, TypeScript, and NextJS are essential. This position is fully remote, providing flexibility to wor ...

Senior Developer (Typescript and Python)

MCS Group delighted to be working with an innovative and rapidly growing technology organisation as they look to appoint a Senior Software Developer to join their expanding engineering team in Belfast. This is an excellent opportunity for an experienced engineer who enjoys working across complex sy ...

Senior Backend Java Developer — Hybrid, Global Finance Impact

Citi is seeking Experienced Backend Java Developers in Belfast, Northern Ireland, to assist in application systems development and analysis. In this role, you will have the chance to contribute significantly to important development activities in a dynamic environment. The ideal candidates will possess ...

Junior Web Developer

Overview MCS Group is delighted to be exclusively partnering with a long-established and highly successful Belfast-based digital agency as they seek to appoint a Junior Web Developer to their growing team. This is an excellent opportunity for an ambitious developer to join a stable, ...

Full Stack Java Developer Python

A professional services consultancy is seeking a Full Stack Java Developer on a contract basis.This is a hybrid model and you will be needed onsite in Belfast 3 days a week.This is an exciting opportunity to join a leading global Tier 1 financial institution undergoing a major transformation of i ...

Experienced Backend Java Developers

## Experienced Backend Java DevelopersApplyremote type: Hybridlocations: Belfast United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: ***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 tri ...

Experienced Backend Java Developers

Overview 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 ...

Software Engineer, Java Backend

About the job Software Engineer, Java Backend Job Description: Location: On-site, Hybrid. Start date: As soon as possible. Languages: Fluent in English. Join the Mineo Team Were Hiring! At Mineo, we are creating the future of recruitment with an innovative ...

Experienced Backend Java Developers

**_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 bu ...

Experienced Backend Java Developers

Overview 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 ...

Experienced Backend Java Developers

Citi Belfast are hiring for Experienced Backend Java Developers with a skillset ranging from Assistant Vice President to Senior Vice President responsible for contributing to a variety of development activities. The overall objective of these roles is to assist/lead in applications systems development, analys ...

Senior Full Stack Engineer — AI, Cloud & Flexible Work

EY in Belfast is looking for a Senior Full‑Stack Developer to join their Technology Consulting team. You will be responsible for designing, developing, and delivering innovative full-stack solutions that address key client challenges. The role requires strong capabilities in JavaScript or TypeScript an ...

Front End Web Developer

## Front-End Web DeveloperApplyremote type: Hybridlocations: Belfast United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: **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 fro ...

Full Stack Java Developer Python

A professional services consultancy is seeking a Full Stack Java Developer on a contract basis. This is a hybrid model and you will be needed onsite in Belfast 3 days a week. This is an exciting opportunity to join a leading global Tier 1 financial institution undergoing a major transformatio ...

React TypeScript UI Engineer — Internal Tools

Java Script Works is seeking a skilled developer to design, develop, and maintain web-based user interfaces using Typescript and React. The ideal candidate will ensure high-quality code through automated testing and have strong proficiency in Typescript/JavaScript. Collaboration with cross-functional teams is es ...

Lead Front End Engineer

Are you the kind of engineer who doesn't just build frontends, but defines how they should be built at scale ? My client is looking for a Lead Front End Engineer to take ownership of a modern, high-impact web platform, shaping both the technical direction and engineering standards ...

Frontend Engineer: React/TypeScript, Hybrid & Impactful

Upwind Security, Inc. is seeking an experienced Frontend Engineer to enhance our innovative team tackling complex engineering challenges. You will focus purely on frontend development, utilizing technologies like React, WebGL, and TypeScript to build high-performance user interfaces. This role offers a ...

Senior Frontend Engineer React + TypeScript Expert

Java Script Works is hiring a Senior Frontend Engineer in Belfast, United Kingdom. The ideal candidate will have strong commercial experience with React and TypeScript, and a solid understanding of modern JavaScript (ES6). Responsibilities include working with design systems and ensuring responsive designs. Sala ...

Senior Frontend Engineer – React/TypeScript & UX

863 Parameta Solutions (Singapore) Pte. Limited in Belfast is seeking a Senior Software Engineer to shape the future of digital platforms. You will be responsible for designing and implementing scalable front-end solutions in a collaborative Agile environment. The role requires strong expertise in React, Type ...

Frontend Engineer React/TypeScript, Hybrid (Remote)

A cloud security technology company is seeking an experienced Frontend Engineer to join their team. This role involves building innovative user interfaces using React and TypeScript while advocating for user experience and design integrity. You will work on complex challenges and contribute to architectural deci ...

Senior Frontend Engineer (Remote) React/TypeScript

Version 1 in Belfast is looking for a Front-End Developer to collaborate with various technical roles and ensure high-quality code in line with business requirements. This position requires expertise in TypeScript and React, along with a commitment to best practices and performance optimization. The id ...

React + TypeScript UI Engineer — Frontend Innovator

A leading software development company in Northern Ireland is looking for a talented web developer to design, develop, and maintain user interfaces using React and TypeScript. Candidates should have at least 3 years of experience and a strong background in web application development. Collaboration with business ...

Lead Front End Engineer

Are you the kind of engineer who doesn't just build frontends, but defines how they should be built at scale?My client is looking for a Lead Front End Engineer to take ownership of a modern, high-impact web platform, shaping both the technical direction an ...

Senior Java Developer

Senior Java Developer | Belfast | £65,000-£80,000 Senior back‑end developer role within a newly established Belfast trading technology hub. Small founding team of 4 engineers; site lead already in place (placed by Ocho). Ground‑floor opportunity to shape engineering culture and grow with the team ...

Java Developer (AVP)

## Java Developer (AVP)Applyremote type: Hybridlocations: Belfast United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: **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 a ...

Java Developer (AVP)

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. <h3 ...

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    Frontend Web Developer React Java Backend Jobs in Belfast Job Search Guide, Trends and Insights