Senior Java Developer

Backend Java Developer

We are looking for an experienced Back end Java Developer to join a long-standing organisation as they maintain and modernise a mission-critical core system that has been the backbone of their business for over two decades.



About the Role



You will work primarily on a large-scale back end system built in Java 8. The role requires strong expertise in working with complex legacy systems, ensuring stability and performance, while also playing a key part in the company's modernisation and cloud migration journey.

A major part of the transformation will involve upgrading to newer Java versions and migrating the system to Microsoft Azure. Your technical insight and problem-solving skills will help shape the next generation of the platform.



Responsibilities

• Understand, maintain, and enhance a 20-year-old Java-based back end system.
• Ensure performance, stability, and reliability of business-critical processes.
• Drive modernisation efforts, including upgrades to newer Java versions.
• Contribute to the migration of the system to Microsoft Azure.
• Collaborate with cross-functional teams on technical transformation projects.
• (Bonus) Support integration work with .NET technologies.

Requirements

• Strong experience as a Java Developer, ideally with Java 8.
• Proven ability to work with complex, large-scale legacy systems.
• Solid understanding of back end development and system architecture.
• Experience with cloud platforms, preferably Microsoft Azure.
• Knowledge of SQL databases and enterprise environments.
• Strong problem-solving and communication skills.

Bonus Skills

• Familiarity with .NET technologies.
• Background in system migrations and modernisation projects.
• Experience with DevOps practices and CI/CD pipelines.

What's on Offer

• The chance to work with a mission-critical system that underpins business operations.
• A central role in a major modernization and cloud transformation project.
• A stable organisation combined with forward-looking tech challenges.
• Supportive colleagues and a collaborative environment where knowledge sharing is valued.

If this role sounds like the right opportunity for you, please apply below.