Senior Java Developer

Company: Sanderson Government and Defence
Apply for the Senior Java Developer
Location: London
Job Description:

Senior Java Developer – Digital & Public Services

A growing digital consultancy delivering complex, high-impact services into the public sector is looking for a

Senior Java Developer

to join its engineering capability.This is an opportunity to work on meaningful projects, contributing to the development of scalable, secure software solutions while influencing engineering best practice across multidisciplinary teams.Please note:

Due to the nature of the work, candidates must either hold

current SC Clearance

or be

eligible to obtain SC Clearance .

The Role

As a Senior Java Developer, you will play a key role in the design, development, and deployment of modern digital services. You will work on complex systems, contribute to architectural decisions, and support the wider engineering team through mentorship and technical leadership.You’ll collaborate closely with cross-functional teams including product, design, DevOps, and QA to deliver high-quality solutions aligned to user and business needs.

Key Responsibilities

Development & Engineering

Design, build, and maintain robust, scalable, and secure software solutionsDevelop modern applications using Java, Spring Boot, and microservices architecturesContribute to architectural decisions and ensure alignment with overall system designTroubleshoot and resolve complex technical issues

Quality & Best Practice

Write clean, maintainable, and well-tested codeImplement and improve CI/CD pipelines to improve delivery efficiencyConduct code reviews and promote high standards of software qualityEnsure strong test coverage and adherence to secure-by-design principles

Collaboration & Delivery

Work within agile delivery teams across the full software lifecycleCollaborate with product managers, designers, and engineers to meet delivery goalsContribute to technical discussions early in the project lifecycleCommunicate technical concepts clearly to both technical and non-technical stakeholders

Leadership & Mentorship

Mentor and support junior engineers, helping to develop capability within the teamChampion best practices in software development and continuous improvementContribute to enhancing engineering standards, tooling, and processes

Continuous Improvement

Stay up to date with emerging technologies and industry trendsIdentify opportunities to improve systems, processes, and toolingSupport adoption of modern engineering practices and approaches

About You

Essential Experience

Strong experience across the full software development lifecycleSignificant hands-on experience with

Java, Spring Boot, and microservicesExperience working in agile environments with DevOps practices and CI/CD pipelinesKnowledge of cloud platforms such as AWS, Azure, or GCPFamiliarity with containerisation technologies (Docker, Kubernetes) or serverless architecturesExperience with automated testing frameworks and modern development practicesUnderstanding of software architecture patterns and secure design principlesStrong communication skills with the ability to engage technical and non-technical stakeholders

Desirable

Experience operating at a senior level within engineering teamsExposure to consulting or client-facing environmentsExperience delivering within government or public sector settingsProficiency across additional programming languages

Key Skills

Writing high-quality, scalable, and maintainable codeDriving code quality through testing, reviews, and standardsWorking effectively in cross-functional teamsCommunicating complex technical concepts clearlyMentoring and developing other engineersContinuous improvement mindset and adoption of new technologiesIf you’re looking to work on impactful digital services in complex environments-while having the opportunity to influence how modern engineering is delivered-this role offers both challenge and purpose.

Reasonable Adjustments:Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.If you need any help or adjustments during the recruitment process for any reason

,

please let us know when you apply or talk to the recruiters directly so we can support you.

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Posted: September 25th, 2026