6,677+ Lead Java Application Developer Java Web Tech Jobs in Belfast, UK — Local Employers Hiring June 2026

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Application Specialist

Application Specialist - packaging lines Flexible home based location The Company A global industry leader in the design and manufacture of full line packaging equipment and robotic automation solutions for the food, beverage and pharma sec ...

Senior Fullstack Developer (Python)

Full Stack Python Developer Join during an exciting period of expansion, where your contribution will help influence the future direction of the platform and wider engineering team. Belfast (Hybrid) Permanent The Opportunity A leading organisation experiencing signifi ...

Senior Web App Penetration Tester & Team Lead

A dynamic security firm in Belfast is seeking a highly skilled Lead Penetration Tester to join their team. In this senior role, you will lead web application and API penetration testing engagements, manage end-to-end processes, and mentor junior testers. Ideal candidates will have at least 5 years of experience ...

Principal Software Engineer

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 ...

Principal Software Engineer

Principal Java EngineerThe experience expected from applicants, as well as additional skills and qualifications needed for this job are listed below.- Belfast (Hybrid) We're hiring a Principal Java Engineer for one of the most interesting product engineering teams in Belfast.This is a genuine princip ...

Backend Software Engineer AWS

Backend Developer AWS | Belfast (Hybrid 3 Days) Location: BelfastType: Full-time About the Opportunity: This is an opportunity to join a high-performing backend engineering team working on a modern cloud security platform. The environment ...

Group Engineering Manager

Group Engineering Manager (Cloud Security) Belfast (Hybrid, 2-3 days in office) | Up to £150,000 + Equity | Cloud Security Scale-up Senior technical leadership role managing multiple backend and infrastructure engineering teams Cloud-native stack: Golang, Java, Kubernetes, eBPF, AWS, GCP and Azure Base salary up ...

Senior Python Developer AVP

Applications Development Senior Programmer Analyst The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology t ...

Director, Engineering Excellence (AI Platforms)

**The Role** We are seeking an experienced Senior Engineering Manager to lead the delivery of high‑impact Engineering Excellence platforms, with a strong emphasis on Generative AI, modern engineering practices, and scalable software delivery. This role blends hands‑on technical leadership with building ...

AI Native Software Engineer

MCS Group is looking for an experienced Java Engineer for a contract position in Belfast. This Contract Java Engineer will work as part of a high-performing technology team, delivering large-scale, data‑intensive applications within a fast-paced financial environment. This contract offers the opportunit ...

Java Software Engineer, Wholesale Credit Risk Analytics Assistant Vice President Citi

Overview 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. ...

Senior Engineer (Vice President)

## For additional information, please review .**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 ide ...

Senior Engineer (Vice President)

## For additional information, please review .**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 ide ...

PLM/ Software Integration Engineer

Description We are seeking a PLM Integration Software Engineer with a hybrid background in PLM/EDM system implementation and software development. This role focuses on developing and maintaining integrations that extract, transform, and deliver product data from PLM/EDM platforms into our aPriori ...

Senior Cloud Backend Engineer – Build Scalable Systems

Instil is seeking experienced Senior Software Engineers to design and build backend services using C#, TypeScript, or Java. This role emphasizes cloud-native application development across AWS, Azure, or GCP while fostering a strong engineering culture. Ideal candidates will have a solid background in ...

Senior Cloud Backend Engineer – Build Scalable Systems

Instil is seeking experienced Senior Software Engineers to design and build backend services using C#, TypeScript, or Java. This role emphasizes cloud-native application development across AWS, Azure, or GCP while fostering a strong engineering culture. Ideal candidates will have a solid background in ...

Senior Full Stack Engineer (Belfast Hybrid)

MCS Group is delighted to be working with a global fintech market leader as they continue to scale their next-generation platform team with the addition of a Senior Full Stack Engineer.Apply below after reading through all the details and supporting information regarding this job opportunity.This is a un ...

Software Test Engineer (AVP)

## Software Test Engineer (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 peopl ...

Group Engineering Manager

Group Engineering Manager (Cloud Security)Belfast (Hybrid, 2-3 days in office) | Up to £150,000 + Equity | Cloud Security Scale-up Senior technical leadership role managing multiple backend and infrastructure engineering teams Cloud-native stack: Golang, Ja ...

Staff Platform Engineer – Cloud Engineering

Staff Platform Engineer – Cloud Engineering The Platform Engineering team is a collection of highly skilled individuals ranging from development to operations with a security first mindset who strive to push the boundaries of technology. We champion a DevSecOps culture and raise the bar on how and ...

Senior Software Engineer — Architect, Scale & Mentor

A leading software development firm is seeking a Senior Software Engineer to architect and maintain enterprise-grade software. The role requires over 6 years of experience, proficiency in Java or Python, and expertise in cloud infrastructure and microservices. You will lead code reviews, mentor junior engineers, ...

Senior Software Engineer — Architect, Scale & Mentor

A leading software development firm is seeking a Senior Software Engineer to architect and maintain enterprise-grade software. The role requires over 6 years of experience, proficiency in Java or Python, and expertise in cloud infrastructure and microservices. You will lead code reviews, mentor junior engineers, ...

Python Developer

The Applications Development Intermediate Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to ...

Senior Python Developer AVP

The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applic ...

Real Time Data Dashboard Frontend Engineer

A leading tech company in Belfast is seeking a talented developer to build high-performance web applications and dashboards. You will be responsible for creating user-friendly insights from complex data, focusing primarily on React development. Ideal candidates should have experience in data visualisation, API i ...

AI Driven Full Stack Engineer

Accenture UK is seeking a Software Engineer- AI Enabled Full Stack Engineer in Belfast. You will utilize AI tooling to enhance application development and deliver innovative solutions in the Health and Public Service practice. The ideal candidate must have a BSc in Computer Science or related field and ...

Test Automation Engineer

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 ...

Senior Software Engineer

The Role We’re looking for experienced Senior Software Engineers who enjoy building scalable systems, working with cloud infrastructure, and delivering high-quality software in production environments. This role sits at the intersection of software engineering and cloud/platform w ...

Senior Software Engineer

The Role We’re looking for experienced Senior Software Engineers who enjoy building scalable systems, working with cloud infrastructure, and delivering high-quality software in production environments. This role sits at the intersection of software engineering and cloud/platform w ...

Senior Software Engineer

The Role Were looking for experienced Senior Software Engineers who enjoy building scalable systems, working with cloud infrastructure, and delivering high-quality software in production environments.The experience expected from applicants, as well as additional skills and qualifications needed for this job ...

Performance Test Engineer

Role Overview As a Performance Test Engineer (Senior Associate) at Kainos, you’ll work within a multi‑skilled agile team, developing and executing non‑functional tests while learning about new technologies and approaches. Responsibilities • Develop and run performance, load, and ...

Senior Backend Engineer

Senior Backend Engineer (Java / Go) Candidates must be based in NI. All applications not based in NI will be disregarded. Do you enjoy building high-performance backend systems in Java or Go? Our client is looking for a Senior Backend Engineer to join a growing engineering team working on ...

Senior Engineer (Vice President)

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. Abou ...

Senior Engineer (Vice President)

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. Abou ...

Senior Software Engineer in Belfast Ocho

Engage in Greenfield Projects Daily Technologies: AWS Angular Java React ASP.NET NodeJS Cloud C# Support JavaScript Years of Post-graduate Engineering Experience A ...

Senior Software Engineer in Belfast Ocho

Engage in Greenfield Projects Daily Technologies: AWS Angular Java React ASP.NET NodeJS Cloud C# Support JavaScript Years of Post-graduate Engineering Experience A ...

Principal Software Engineer Architect & Tech Leader

Instil in Belfast is seeking a Principal Software Engineer to solve complex technical problems, shape architecture, and lead high-quality software delivery. You’ll guide teams in backend systems and cloud infrastructure, ensuring robust and scalable solutions. The ideal candidate must have strong exper ...

Technical Lead Software Developer

Our client is a globally recognised organisation with a dedicated innovation function responsible for building cutting‑edge applications that transform the working lives of finance and tax professionals. Their mission is to rapidly prototype ideas, gather meaningful user feedback and scale the solution ...

Strategic Marine Tech Procurement Lead

Hosco is seeking a Category Manager for Marine Technical Procurement based in Weybridge, UK. In this hybrid position, you will collaborate with technical and operational teams to deliver cost-competitive solutions for the Royal Caribbean fleet. Candidates should have at least 5 years of experience in procurement ...

Ruby on Rails Engineer — Scale a Global Sports Club SaaS (Remote)

TeamFeePay is seeking an experienced Ruby on Rails developer to join our growing team in Belfast, UK. You'll own features, tackle performance issues, and shape technical direction within a dynamic sports-tech startup. Ideal candidates have extensive experience with Rails, web applications, and AI coding tools. W ...

Senior C++ Developer

Senior C++ Software Engineer Staff-level individual C++ contributor with a clear path to technical leadership C++ server-side engineering handling global transaction volumes Hybrid working with genuine flexibility to work from home 35 days holiday, private medical, pension matched to 5%, and more An engineering- ...

Hybrid Security Engineering Lead | Cloud Native & DevSecOps

MCS Group is seeking an experienced Managing Security Engineer to lead a high-performing engineering team in Belfast. This hands-on leadership role requires expertise in security controls and modern programming languages like Java, JavaScript, or Python. The ideal candidate will foster an engineering c ...

Senior Engineer (Vice President)

**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 Departme ...

Managing Engineer Security Software

Managing Security Engineer (Hybrid) The Opportunity Our client is seeking an experienced Managing Security Engineer to lead a high‑performing engineering team responsible for designing, building, and operating security controls as scalable software products. This is a hands‑on leadershi ...

Managing Engineer Security Software

Managing Security Engineer (Hybrid) The Opportunity Our client is seeking an experienced Managing Security Engineer to lead a high-performing engineering team responsible for designing, building, and operating security controls as scalable software products.Apply fast, check the full description by scrolling ...

Ruby on Rails Engineer — Scale a Sports SaaS (Remote/Hybrid)

A dynamic sports-tech SaaS company based in Northern Ireland is seeking an experienced Software Developer (Ruby on Rails) to shape its engineering culture and architecture. You'll own end-to-end features that deliver real value to sports clubs and their members. This role requires at least 2 years of experience ...

Application Support Analyst

Our client, a specialist healthcare consultancy delivering digital transformation and interoperability solutions across the NHS, is seeking a skilled Clinical Application Support Analyst to join their expanding support and delivery function. This role offers the opportunity to work c ...

Application Support Engineer

Application Support Engineer | Remote | £45,000 This is a rare opportunity to join a growing global technology organisation at an early stage of its UK expansion. The UK team is in the process of being built out, meaning this Application Support role sits right at t ...

Application Support Manager

Description At System C, our technology plays a vital role in supporting local authorities to deliver effective social care services. We are looking for an experienced Application Support Manager to lead a specialist support team working with Liquidlogic's market-leading social c ...

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