Lead Python / Typescript Engineer - National Security AI
Principal Engineer / Hands-on Technical Lead The full job description covers all associated skills, previous experience, and any qualifications that applicants are expected to have.
Permanent | £80,000 - £100,000 | South East (Hybrid)
SC clearance required or eligible
We are seeking a Principal Engineer to take ownership of technical delivery for Defence programmes. The role focuses on building AI-enabled capabilities in secure, air-gapped environments, combining hands-on software engineering with technical leadership to deliver high-assurance solutions.
You'll be working on some of the most exciting projects within Defence AI and LLM generation and deployment, delivering and integrating core products and working with the customers to build best in class systems for mission decisions.
Key Responsibilities
Lead day-to-day technical delivery on Defence programmes
Make architecture and design decisions for deployments into classified environments
Write production code, conduct code reviews, and set engineering standards
Translate programme requirements into technical plans, sprints, and deliverables
Work closely with Defence stakeholders, delivery managers, and end users on site
Manage technical risk, dependencies, and integration points across programme workstreams
Mentor and develop engineers within the team
Contribute to technical proposals, bids, and architecture documentation
Support release management and deployment in air-gapped environments
Skills & Experience
Significant experience as a senior or lead engineer delivering complex software in secure or regulated environments
Strong ability to articulate architecture xehkeey and integration concerns clearly
Proficiency in Python and/or TypeScript (core stack)
Familiarity with AI/ML integration patterns (model serving, RAG pipelines, vector databases)
Understanding of secure development practices
Experience working in fast-paced, scaling organisations
UK-based with willingness to travel to sites as required
Hold or eligible for DV clearance
This is a high-impact role delivering nationally significant defence programmes with flexible hybrid working in the South East.
Permanent | £80,000 - £100,000 | South East (Hybrid)
SC clearance required or eligible
We are seeking a Principal Engineer to take ownership of technical delivery for Defence programmes. The role focuses on building AI-enabled capabilities in secure, air-gapped environments, combining hands-on software engineering with technical leadership to deliver high-assurance solutions.
You'll be working on some of the most exciting projects within Defence AI and LLM generation and deployment, delivering and integrating core products and working with the customers to build best in class systems for mission decisions.
Key Responsibilities
Lead day-to-day technical delivery on Defence programmes
Make architecture and design decisions for deployments into classified environments
Write production code, conduct code reviews, and set engineering standards
Translate programme requirements into technical plans, sprints, and deliverables
Work closely with Defence stakeholders, delivery managers, and end users on site
Manage technical risk, dependencies, and integration points across programme workstreams
Mentor and develop engineers within the team
Contribute to technical proposals, bids, and architecture documentation
Support release management and deployment in air-gapped environments
Skills & Experience
Significant experience as a senior or lead engineer delivering complex software in secure or regulated environments
Strong ability to articulate architecture xehkeey and integration concerns clearly
Proficiency in Python and/or TypeScript (core stack)
Familiarity with AI/ML integration patterns (model serving, RAG pipelines, vector databases)
Understanding of secure development practices
Experience working in fast-paced, scaling organisations
UK-based with willingness to travel to sites as required
Hold or eligible for DV clearance
This is a high-impact role delivering nationally significant defence programmes with flexible hybrid working in the South East.