6,676+ Lead Java Application Developer Java Web Tech Jobs in Belfast, UK — Local Employers Hiring June 2026

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Senior Application Development Lead Generative AI (GenAI), Vice President

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, application development, problem solving and communication to Source to Pay Solutions Technology group. By Joining Citi, you will become part of a global organisat ...

Senior Application Development Lead Generative AI (GenAI), Vice President

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, application development, problem solving and communication to Source to Pay Solutions Technology group. By Joining Citi, you will become part of a global organisation w ...

User Experience Intermediate Analyst

We are seeking a talented and enthusiastic Front-End Developer to join our Creative Tech & Governance team. This role offers a unique opportunity to contribute to the core of our internal design systems, supporting and developing robust, reusable UI components and libraries using modern web technologies. You wil ...

Technology Field Application Engineer

Position: Technology Field Application EngineerJob Description: Principal AccountabilitiesBe part of driving technical sales results for the embedded microcontroller and microprocessor team, in particular, championing wireless connectivity.Actively drive customer ...

Software Engineering Team Lead

MCS Group is working with an exciting software scale-up building AI-powered products used by enterprise customers globally. They're now looking for a hands-on Engineering Team Lead to join their growing backend team. This role is ideal for a strong Senior or Lead software Engineer who still loves co ...

Senior Application Security Engineer

TL;DR We’re looking for a deeply technical Application Security Engineer to embed inside engineering and help secure Cloudsmith 2.0, the operating system for the modern software supply chain. The ideal person is a software engineer at heart who chose to specialize in security. You should be comfo ...

Software Engineer Back End

About us @Symphony We’ve spent the last 10 years building a communication and markets technology company, powered by interconnected platforms: messaging, voice, directory and analytics. Over 1000 institutions use our modular technology built for global finance. Security is in our DNA with uncomprom ...

Frontend Developer AI Analytics UI (Hybrid Belfast)

VanRath is seeking a Frontend Developer for a hybrid working position in Belfast. This role involves enhancing user interfaces and creating responsive web applications using JavaScript, TypeScript, HTML, and CSS. The successful candidate will also integrate APIs and improve application efficiency in a collabo ...

Backend Software Engineer

Backend Software Engineer Belfast (Hybrid - 3 days in office) | Full-time At a Glance Role: Backend Software Engineer Location: Belfast - Hybrid (3 days in office) Employment Type: </ ...

Full Stack Engineer (Web & APIs)

At The Flex , we believe renting a home should feel instant, intelligent, and effortless — as seamless as booking a ride. Our ambition is bold: enabling anyone to live anywhere, anytime, without friction. Powered by Base360.ai , our proprietary automation engine, we are buildi ...

Fullstack Software Engineer Pay Web

Olo is a leading SaaS platform accelerating digital transformation in the restaurant industry, by helping customers deliver more personalised and profitable guest experiences. As a result, our digital ordering, payment, and guest engagement solutions enable hospitality at scale, helping brands to do more w ...

Managing Engineer Security (Hybrid)

At Allstate, great things happen when our people work together to protect families and their belongings from life's uncertainties.Not sure what skills you will need for this opportunity Simply read the full description below to get a complete picture of candidate requirements.And for more than 90 years, ...

QA Engineer

QA Engineer LOCATION: Belfast, On site Office Location: Belfast About StormHarvester StormHarvester helps wastewater utilities predict and prevent issues like flooding and pollution before they happen, protecting communities and reducing costs. We are the market leader in this spa ...

Senior Automated QA Engineer End to End Testing & Mobile

Skills and Experience Required: Familiarity with tools like Cypress, Playwright, Appium, or similar. Experience across a combination of technologies including TypeScript, Angular 18, PHP (Symfony), REST APIs, Node.js (Lambda), MySQL (Aurora), AWS, Kubernetes, Docker, with Kotlin/Java and Swift for ...

Senior Automated QA in Belfast MCS Group

Skills and Experience Required: Familiarity with tools like Cypress, Playwright, Appium, or similar. Experience across a combination of technologies including TypeScript, Angular 18, PHP (Symfony), REST APIs, Node.js (Lambda), MySQL (Aurora), AWS, Kubernetes, Docker, with Kotlin/Java and Swift for ...

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 ...

Automation QA Engineer Playwright, Selenium & CI/CD

Java Script Works is looking for a QA Engineer - Automation in Belfast, Northern Ireland. The role involves designing and implementing automated tests, utilizing tools like Selenium, Playwright, and Cucumber while working within Agile methodologies. A strong understanding of JavaScript and TypeScript i ...

Senior Engineer (Python, AWS, ScaleUp)

Senior Security EngineerTake the next step in your career now, scroll down to read the full role description and make your application.- Cloud & Application Security Senior-level security engineering role within a fast-growing technology business Hands-on work across cloud security, secure software deliv ...

Remote Friendly Full Stack Engineer (C#/.NET & React)

A leading DevOps platform in Belfast is seeking a Mid-Level Software Engineer to enhance existing features and collaborate on new developments. The ideal candidate has experience in full-stack development and is familiar with technologies such as C#, Java, and React. This full-time role offers a flexible working ...

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 ...

PLM Integration Engineer: Remote/Hybrid Data Bridges

aPriori Technologies is looking for a PLM Integration Software Engineer in Belfast, NI, offering a hybrid work model. The role involves developing and maintaining integrations for product data from PLM/EDM platforms into aPriori software. Candidates should have strong skills in Java and familiarity with system i ...

Senior Cloud & Data Engineer Scale Enterprise Pipelines

A leading recruitment firm in Belfast is hiring a hands-on Software Engineer to develop and scale enterprise-grade cloud and data systems. The role involves designing scalable backend services and collaborating across cross-functional teams. Candidates should have strong experience in Java, multi-threaded archit ...

Tech Lead (Python) — Build & Own Core Infra

A leading recruitment consultancy in Belfast, Northern Ireland, is seeking two passionate engineers for Tech Lead positions. In this role, you will take ownership of core domains and lead small, agile teams to build critical infrastructure software. Ideal candidates possess solid software design principles, expe ...

Digital Projects Lead Jira Expert & Tech PM

A local professional services company in Belfast is seeking a Technical Project Manager to lead high-impact digital projects. The role combines technical knowledge with excellent client-facing skills. Candidates should have over 5 years of experience in project management and be proficient in Jira. This position ...

Dispensing Optician: Lead Care & Growth | OCT Tech

Specsavers is seeking a qualified Dispensing Optician for their Belfast Park Centre location. The role demands a commitment to exceptional customer care and offers a salary up to £35,000 along with a joining bonus of £6,000. Candidates should exhibit strong clinical judgment and have management experie ...

Engineering Manager: Lead High Velocity Tech Teams

A leading financial technology company in Northern Ireland is seeking an experienced Engineering Manager to unlock the potential of their engineering teams. You will be responsible for managing multiple teams, ensuring high-quality software delivery, and mentoring team members while collaborating with internatio ...

Lead Test Engineer (Healthcare)

Join Kainos and Shape the Future At Kainos, we’re problem solvers, innovators, and collaborators – driven by a shared mission to create real impact. Whether we’re transforming digital services for millions, delivering cutting‑edge Workday solutions, or pushing the boundaries of technology, we do ...

Principal .Net Developer ( AI )

Principal Software Architect / Engineering Manager Belfast | Hybrid | Permanent | Competitive + Leadership Bonus This one is different. Most architecture roles are advisory. This one has teeth. Our client is on a genuine platform transform ...

Guest Experience Lead — Friendly, Fast & Tech Savvy

KFC County Down - Saintfield Road is looking for a Guest Experience Lead to ensure every guest feels welcomed and valued. In this role, you will assist with guest inquiries, facilitate digital orders, and maintain a smooth operation. You'll be integral in supporting the team and enhancing customer satisfactio ...

Senior Platform Security Architect | Secure by Design Leader

Allstate Insurance Company in Belfast seeks a visionary Platform Consultant with strong security architecture experience. The role involves guiding engineering teams through complex challenges, embedding secure-by-design principles, and shaping platform strategies. The ideal candidate has a minimum of 5 years of ...

Senior Cloud Backend Engineer

Instil Software Ltd is seeking experienced Senior Software Engineers to design and build backend services with modern cloud platforms. Ideal candidates will have a strong grasp of C#, TypeScript, or Java and enjoy contributing to system architecture and mentoring junior engineers. The position offers flexibil ...

Senior Cloud Backend Engineer

Instil Software Ltd is seeking experienced Senior Software Engineers to design and build backend services with modern cloud platforms. Ideal candidates will have a strong grasp of C#, TypeScript, or Java and enjoy contributing to system architecture and mentoring junior engineers. The position offers flexibil ...

Senior Software Test Engineer – Fixed Income Automation

Citi is seeking a Software Test Engineer for the Global Fixed Income Trade Processing (FiTP) Team in Belfast. This role involves automation testing, developing test plans, and ensuring quality for critical applications. The ideal candidate will have hands-on experience in Selenium or Cypress, strong Ja ...

Staff Software Engineer Billing Platform & Scale (Hybrid)

Apex Fintech Solutions UK Ltd. is looking for a Staff Software Engineer to design microservices architecture and mentor engineers. This position requires 8+ years of experience in software development, expertise in Java, Python, and strong knowledge of cloud platforms. This role operates in a hybrid en ...

Graduate Software Engineer 2026 Intake

At Instil We help technology brands transform, innovate and disrupt their markets with secure, category-defining software. Our services include product development, delivering next-generation digital solutions; cyber security, helping teams protect against emerging cyber threats; and artificial i ...

Staff Software Engineer

Position Summary Harness is a high‑growth company disrupting the software delivery market. Our mission is to enable the 30 million software developers worldwide to deliver code reliably, efficiently, securely, and quickly, increasing customers’ pace of innovation while improving the developer exp ...

C# Engineer

Software Engineer Developer – C#, .NET, Azure Are you a seasoned Full Stack Developer looking for a role where you can genuinely influence technical direction, shape modern solutions, and take ownership of meaningful projects? If you’re passionate about C#, .NET, Azure, and driving e ...

Lead Penetration Tester CTL App

We’re looking for a highly skilled Lead Penetration Tester with CHECK Team Lead (Web App) to join our dynamic security team. This is a senior, hands‑on role where you’ll lead and deliver complex web application and API penetration testing engagements, working with a diverse range of clients ...

Senior Software Engineer – Hybrid Finance Tech (Markets Ops)

Citigroup Inc. is seeking a Senior Software Engineer in Belfast. You will help redefine global finance by building robust software solutions in a dynamic team environment focused on integration and automation. Ideal candidates have strong programming skills primarily in Java, React, and Python, along with experi ...

Senior Software Engineer (AVP) Hybrid Finance Tech

Citibank (Switzerland) AG is looking for a Senior Software Engineer in Belfast to join their Markets Operations Technology team. You will tackle engineering challenges while building robust solutions using Java, React, and Python. This role comes with a competitive base salary, 27 annual leave days, private medi ...

Senior Software Engineer – Hybrid Finance Tech (Markets Ops)

Citigroup Inc. is seeking a Senior Software Engineer in Belfast. You will help redefine global finance by building robust software solutions in a dynamic team environment focused on integration and automation. Ideal candidates have strong programming skills primarily in Java, React, and Python, along with experi ...

Senior Software Engineer (AVP) Hybrid Finance Tech

Citibank (Switzerland) AG is looking for a Senior Software Engineer in Belfast to join their Markets Operations Technology team. You will tackle engineering challenges while building robust solutions using Java, React, and Python. This role comes with a competitive base salary, 27 annual leave days, private medi ...

Graduate Software Engineer – Mentored Growth & Flexible Hours

A technology company is looking for Graduate Software Engineers to join their team in Northern Ireland. This role will allow you to develop software solutions while learning from experienced mentors in a flexible environment. The ideal candidate holds a computer science or software engineering degree and possess ...

Senior Platform Engineer AI Driven DevOps & Infra

A leading AI software delivery platform is seeking an experienced Infrastructure as Code Management engineer in Belfast. This role involves designing, developing, and maintaining critical software solutions while mentoring teams. Candidates should have over 7 years of experience in Java and Golang, strong analyt ...

Senior Software Engineer (AVP) Hybrid Finance Tech

Citibank (Switzerland) AG is looking for a Senior Software Engineer in Belfast to join their Markets Operations Technology team. You will tackle engineering challenges while building robust solutions using Java, React, and Python. This role comes with a competitive base salary, 27 annual leave days, private medi ...

Senior Software Engineer – Hybrid Finance Tech (Markets Ops)

Citigroup Inc. is seeking a Senior Software Engineer in Belfast. You will help redefine global finance by building robust software solutions in a dynamic team environment focused on integration and automation. Ideal candidates have strong programming skills primarily in Java, React, and Python, along with experi ...

Senior Cloud Backend Engineer

Instil Software Ltd is seeking experienced Senior Software Engineers to design and build backend services with modern cloud platforms. Ideal candidates will have a strong grasp of C#, TypeScript, or Java and enjoy contributing to system architecture and mentoring junior engineers. The position offers flexibil ...

Automation Tester

Automation Tester - UK/Remote - Government £400.00+ Per Day Inside IR35 Key Responsibilities Design, develop, and maintain automated test frameworks using Java, Selenium, and Cucumber . Create and execute automated test scripts for ...

Principal .NET & Microservices Lead (Belfast)

Ocho is looking for a Principal .NET Engineer to join their team in Belfast. The ideal candidate will possess a Bachelor’s or Master’s degree in Computer Science, and have 8 years of experience in Java development along with strong skills in .NET and microservices. This full-time role requires proven l ...

Security Engineer II: Secure SDLC Innovator (Hybrid Belfast)

EverQuote, Inc. in Belfast is seeking a Security Software Engineer II to enhance security practices and streamline vulnerability management. The role involves working on security tooling, monitoring cyber threats, and collaborating with teams on security solutions. Candidates should have 2-3 years of experience, ...

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