Job Description

Software Engineer (Java)
Security Clearance Required: DV ('Developed Vetting')
Location: 80% On-Site to Farnborough, UK
UNLEASH YOUR POTENTIAL
We're seeking a Software Engineer with hands-on experience in secure, modular systems to support development of a Distributed Data Framework (DDF) catalogue and integrate features from the Codice Alliance framework.
Are you ready for your next career challenge?
This sub family is responsible for performing the software engineering function, including the design, development, testing, troubleshooting, and debugging of software programs for enhancements and new software-intensive systems and products. Applies appropriate principles, standards, processes, procedures and tools throughout the software development life cycle. Duties include software requirements analysis, analysis of hardware compatibility, development of software products and tools used for design, development and maintenance of infrastructure, and platforms.
IMPACT: Works to achieve day-to-day objectives with moderate impact on the area/ project team. Works independently on larger, moderately complex projects/assignments. May assist other technical staff with tasks and assignments.
COMPLEXITY: Addresses somewhat complex technical issues/problems using internal best practice and through collaboration with colleagues. Develops solutions to technical problems that require depth of technical knowledge, but are typically limited in complexity.
COMMUNICATION: Communicates with colleagues across multiple areas (project managers, other technical resources, etc.). Explains technical solutions, practices and procedures to others within the organization. Will also communicate with the customer, capturing requirements & demonstrating progress.
LEADERSHIP & TALENT MANAGEMENT: KNOWLEDGE: Requires working knowledge of and ability to apply standards, principles, theories, concepts, and techniques of technical domain.
TYPICAL EDUCATION & EXPERIENCE: Typically requires BS degree and 2 - 4 years of prior relevant experience or Masters with less than 2 years of prior relevant experience.
Your Role and Responsibilities.
What You'll Do:
Develop and maintain a DDF-based catalogue system
Upgrade an existing DDF cataloguing system to latest versions, preserving and enhancing custom built features
Integrate and extend Codice Alliance tools with the existing catalogue
Build secure and modular services for ingesting, indexing, and querying geospatial and imagery data
Work with OSGi, Apache Karaf, and other modular Java platforms
Ensure compliance with data security, access control, and audit requirements
Create Design and Build documentation derived from customer requirements.
Required Experience:
Strong Java development experience, especially in modular or distributed systems
Familiarity with OSGi, Apache Karaf, and the DDF architecture
Experience with REST APIs, secure data handling, and geospatial data formats
Experience with build tools (Maven), version control (Git), and CI/CD pipelines
Experience with geospatial standards (OGC, GeoJSON, WKT, etc.)
Knowledge of Elasticsearch, Solr, or other search indexing tools
Familiarity with classified or sensitive data environments
Understanding of mission systems in defence and intelligence, particularly with ISR.
Experience of independently understanding and writing source code.
Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your CV with us today!
What we do for you:
At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.
We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:

• Contributory Pension Scheme
• Private Medical Insurance
• 33 days Annual Leave (including public and privilege holidays)
• Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)
• Access to Flexi-time benefits

Commitment to Diversity:
We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture. We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone. If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.
Who We Are:
Leidos UK & EUROPE - we work to make the world safer, healthier, and more efficient through technology, engineering and science.
Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.
What Makes Us Different:
Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world. You can inspire change.
Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team. We have been empowering our people to work flexibly for years. Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.
People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.
At Leidos, we don't want someone who "fits the mold"--we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."
If you're already scheming step 20 while everyone else is still debating step 2... good. You'll fit right in.
Original Posting:
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range: 47,500.00-60,900.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Skills Required