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iO Associates - UK/EU
Senior Java Developer

Senior Java Developer

On site

London, United kingdom

£ 80,000 /year

Senior

Full Time

13-01-2026

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Skills

Python Java DevOps Docker Ansible Test Linux git Software Development Junit Spring Maven

Job Specifications

Security Cleared Senior Java Developer

Remote
Permanent
Up to £80K per annum

A trusted UK Central Government technology programme is looking for an experienced Senior Java Developer to join their high-impact delivery team. Working on mission-critical systems that support national infrastructure, this role offers the chance to work fully remotely on challenging and technically rich work across legacy and modern platforms.

You will be responsible for designing, coding, reviewing, and unit testing applications in the Java ecosystem. You will collaborate with developers, testers and DevOps, contribute to automated test reviews, and help maintain and enhance existing legacy systems. You'll also work alongside teams responsible for infrastructure changes using Docker, Ansible, Python, and Linux.

Key Requirements

Active SC Clearance
5+ years of experience in software development, with strong Java expertise
Solid hands-on experience with Java 8, Spring, Maven, Git, and JUnit
Strong experience with Web APIs - REST/JSON and XML/SOAP
Proven ability to deliver on complex, maintenance and enhancement-focused programmes

P.S.: Visa sponsorship is not available - only candidates currently residing in the UK with the existing right to work will be considered.

Ready to join a high-impact government technology programme? Apply now with your CV!

About the Company

Specialising in recruitment across the tech, digital, engineering, and government and defence sectors, iO Associates have extensive experience in securing the best talent to create the products and infrastructure of the future. Our dedicated team of highly experienced and knowledgeable consultants provide bespoke solutions, working with businesses to find the perfect fit across contract, interim, search, and permanent appointments. We offer end-to-end support, from Statements of Work and IR35 determination processes to full... Know more