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Java Engineer (Multiple Roles) - All Levels

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: HAYS Specialist Recruitment
Full Time position
Listed on 2026-08-18
Job specializations:
  • Software Development
    Java Developer, Backend Developer
Salary/Wage Range or Industry Benchmark: 60000 GBP Yearly GBP 60000.00 YEAR
Job Description & How to Apply Below

Senior Java Developer - Build at Scale, Shape What's Next Belfast | Hybrid | Multiple Roles | Highly Competitive Package
??

Why This Role?

If you're a strong Java engineer who wants to do more than just code, this is your opportunity to work on some of the most complex, high-impact technology programmes in the UK & Ireland. You'll be joining a fast-growing, high-performing engineering team delivering large-scale digital transformation projects for major organisations - influencing how they build, scale, and future-proof their technology. This is not BAU.

This is modern engineering, real complexity, and visible impact.
?? What You'll Be Doing

  • Designing and building scalable, cloud-native applications used at enterprise level
  • Solving complex engineering challenges across multiple high-profile programmes
  • Working in Agile, cross-functional teams alongside top-tier engineers, architects, and product teams
  • Building secure, high-performance APIs and microservices
  • Contributing to architecture decisions and technical strategy
  • Driving best practice in clean code, testing, and automation
  • Mentoring others and helping raise the bar across the team

?? What We're Looking For We're not just looking for experience - we're looking for engineers who want to push

  • Strong background in Java development (Spring Boot essential)
  • Experience building REST APIs and distributed systems
  • Solid understanding of OOP, design patterns, clean architecture
  • Experience working with Docker / Kubernetes
  • Exposure to CI/CD and modern Dev Ops practices
  • Cloud experience (AWS, Azure or GCP)

Big plus if you have:

  • Experience with Kafka / messaging systems
  • Built or worked within microservices architectures
  • Experience scaling systems or handling high-volume environments
  • Interest in emerging tech, automation, or AI-assisted development

?? What Makes This Different

  • Work on projects that actually matter - large-scale, complex, business-critical
  • Be part of a team that values engineering excellence, not just delivery.
  • Access to cutting-edge tools, tech, and continuous learning
  • Clear path to Senior / Lead / Architect progression
  • A genuinely collaborative, high-performing environment

?? Flexibility That Works

  • Belfast-based with hybrid working
  • Real flexibility around how you structure your week
  • Balance between client exposure, team collaboration, and remote working

?? Career Growth You'll have the opportunity to:

  • Gain certifications and new technical skills
  • Work across multiple industries and technologies
  • Progress quickly based on impact, not tenure

? Ready to Step Up?

If you're looking for a role where you can build better systems, solve harder problems, and accelerate your career, we want to hear from you.

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Skills:
Java JVM Scala Kotlin

Benefits:
Competitive

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