Senior Software Engineer - Luton

Salary: £76,000 - 94,000 per year

Requirements:

• Proven expertise in a modern programming language such as Python, Java, Node, or TypeScript, with a strong commitment to software craftsmanship and clean code.
• Experience handling data from heterogeneous, distributed sources.
• Experience with the Semantic Web stack such as RDF, OWL, and SPARQL, or with graph databases such as Neo4j, GraphDB, or Stardog is highly desirable.
• Understanding of the challenges associated with tenuously connected digital environments and distributed data.
• Commitment to SOLID principles, maintainable architecture, and automated testing.
• A degree in Computer Science, Mathematics, or a related field, or equivalent professional experience.
• Interest in Knowledge Engineering and the ability to think in terms of relationships and abstractions.
• Mindset that prioritises composability and scalability over quick, hard-coded fixes.
• Willingness to learn new technologies and approaches.

Responsibilities:

• Develop and maintain the software implementation of the Digital Thread using the Semantic Web stack.
• Build and optimise graph databases and triple stores that house engineering relationships and enrichments.
• Implement logic that enriches data as it moves through the thread, adding semantic value and context.
• Develop tool adapters that map local data schemas to a global ontology.
• Ensure tool-specific data is ingested into the graph without losing semantic meaning.
• Focus on mapping to the model rather than mapping to the tool to avoid fragile point-to-point integrations.
• Architect and implement versioning and configuration control mechanisms for the Digital Thread graph.
• Ensure changes are traceable and concurrent access is managed.
• Develop software patterns that keep the graph performant and consistent across a large, distributed programme.
• Work closely with the Principal Systems Engineer to translate formal ontologies into performant software implementations.
• Collaborate with other software engineers to ensure the Digital Thread provides the enablers they need to achieve quality at pace.
• Contribute to the design and development of software solutions that improve how engineering information is created, connected, and used across the product lifecycle.
• Help build the digital fabric that connects our distributed engineering landscape.
• Contribute to the strategy for wider adoption of Knowledge Graphs and semantic technologies across the business.
• Implement configuration control and concurrency models that ensure the Digital Thread remains a reliable, authoritative source of truth at scale.

Technologies:

• Architect
• Fabric
• Support
• Java
• Neo4J
• Python
• RDF
• Security
• TypeScript
• Web
• NodeJS
• Flow

More:

We are Leonardo UK, a global leader in Aerospace, Defence, and Security headquartered in Italy, with over 53,000 people worldwide including 8,500 across 9 UK sites. We are hiring a Senior Software Engineer for our GCAP Enablers team in Edinburgh, with additional location options in Luton, on a permanent full-time hybrid basis with an expected three days on-site per week. We offer a company-funded benefits package including generous leave with up to 12 flexi-days, an award-winning pension scheme with up to 15% employer contribution, wellbeing support, inclusion networks, bonus eligibility for management level and below, access to 4,000+ online courses, a referral programme, and up to 500 annually in flexible benefits including private healthcare, dental, family cover, tech and lifestyle discounts, and gym memberships. We are committed to an inclusive, accessible, and welcoming workplace where our people help shape innovation, advance technology, and enhance global safety.

last updated 37 week of 2026