Java Engineer

Company Description

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting-edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today.

Join us and start building tomorrow’s world today!

Job Description

We’re looking for an experienced Java Engineer to support a long‑term defence project based in Dorset. This role involves hands‑on development, secure coding, and contributing to system design within a highly regulated environment.

• Location: Dorset 
• On Site: 3x onsite 
• Clearance: SC 
• Experience Level: Mid - Senior 

Key Responsibilities:

• Work through Java development tickets and deliver high‑quality code
• Design, build, and maintain Java applications within a service‑oriented architecture
• Develop and manage RESTful APIs for system integration
• Collaborate with multidisciplinary teams to ensure all work meets strict security and defence standards
• Contribute to system design sessions and architecture reviews using Enterprise Architect
• Follow Agile development practices and support continuous improvement

Qualifications

Required Skills:

• Strong Java development experience
• Mandatory engineering experience 
• Proven background in building REST APIs
• Proficient with IntelliJ IDEA
• Familiar with Atlassian tools (Jira, Confluence, etc.)
• Experience using Enterprise Architect for system modelling
• Understanding of defence‑sector requirements and secure coding principles

Required Qualifications:

• A Bachelor’s or Master’s degree in Engineering, or equivalent military experience.

Desirable Skills:

• Experience in any highly regulated sector (defence, aerospace, government, telecoms, finance, etc.)
• Knowledge of modern software architecture approaches (service‑oriented, modular, microservices)
• Exposure to CI/CD pipelines or automated testing frameworks
• Understanding of integration between complex systems
• Familiarity with UML or other modelling/diagramming methods
• Strong problem‑solving skills and ability to work collaboratively
• Willingness to learn domain‑specific standards and security requirements

Additional Information

Why join us? 

We bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies.

At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.

Join a passionate team and help build tomorrow, today.

In short you get: 

• A personalised career path and a rewarding management style 
• A huge diversity of engineering projects and industries
• Private Medical Insurance
• Cycle & Tech Scheme 
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings & team buildings
• Flexible way of working (role dependent)

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes. 

ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know. 

This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website Gov.UK. If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected . Details of this will be discussed with you at interview.