• Mentor and coach engineers across the team — not just juniors — and help grow our full stack engineering practice inside 4C.

• Extend and modify the existing Exonaut platform, building the front-end features, backend services and APIs that connect it to surrounding systems — owning the user experience, integration contracts, performance and security.

• Work directly with stakeholders on both sides — our own project managers, designers and engineers, and the customer’s technical and non-technical people — drawing out what’s really needed, explaining technical trade-offs in plain language, and making sure what we build genuinely serves the people who use it.

About you

• A capable engineer with full stack experience who has independently led substantial pieces of work — building both front-end and backend, connecting systems together and seeing it through to production — and who still likes being close to the code.

• Comfortable building modern web front ends (a component-based TypeScript framework, specifically Angular) as well as backend services and APIs (REST and/or event-based), and integrating with third-party systems such as ERP platforms, data stores and external engines — with a good grasp of integration patterns, authentication and performance.

• Solid SQL and strong Java (our backend language). Comfortable with version control, code review, automated testing and CI/CD pipelines — you treat test automation and safe, repeatable delivery as part of building, not a separate phase.

• Energised rather than unsettled by ambiguity: you can pick up a new stack quickly, you’re happy to define the problem rather than only solve a specified one, and you make sound calls when requirements are still moving. We care more about that than about any specific technology you already know.

• Sound judgement around system and data design — including integrating with a data warehouse / lakehouse — and good instincts for when to use streaming or event-driven approaches versus batch.

• Good product and user-experience instincts — you care how the interface feels for the people using it, not just how the code reads.

• Pragmatic about quality: you instrument what you build and care as much about how it runs in production as how it looks in code review.

• A strong communicator who can hold a technical conversation with engineers and a plain-language one with project managers, designers and senior customer stakeholders — internal and external, including in regulated environments.

• A mentor by instinct who lifts the people around you and helps spread good practice.

• Fluent written and spoken English, as required for security-cleared defence work and for clear communication with UK customer stakeholders.

• This role requires the successful candidate to be a UK national and eligible to obtain UK Security Clearance (SC). Candidates who already hold current UK SC clearance will be at an advantage; however, we also welcome applications from individuals who meet the eligibility requirements and are willing to undergo the SC clearance process.

• A genuine interest in our mission — software that helps armed forces, public safety and resilience organisations train, prepare, and respond.

Research shows some people only apply when they meet every requirement — if you don’t tick every box but recognise yourself in much of the above, please apply anyway. We’d genuinely like to hear from you.

What you can expect from 4C Strategies

• Warminster-based, with hybrid working — typically around three days a week on-site at our office or a customer site. Some of the work needs to be done on-site, and the exact pattern can vary with the programme’s needs, but we’re supportive of flexibility where the work allows. Easily commutable from Bath, Salisbury, Trowbridge and the surrounding area.

• Competitive salary, reviewed annually

• Pension Scheme with 5% employer contribution

• Private healthcare including dental

• Enhanced family leave (maternity, paternity and adoption)

• 25 days holidays (plus bank holidays)

• Life Assurance

• Cycle to work scheme

• Company social events

Why Join 4C Strategies

If you’re happiest when the path isn’t drawn yet, this is a rare chance to own hard, open problems on a large, multi-year programme — real scale, real production systems, and the freedom to shape how they’re built — with a collaborative team to figure the hard parts out alongside you. You’ll work alongside experienced engineers and military specialists, with the individual-contributor track valued as highly as management, so you can grow without leaving the code behind.

The work matters: what you build helps armed forces, public safety and resilience organisations train, prepare, and respond. If you want senior-level ownership on systems that are used in earnest — not a backlog ticket factory — this is that role.

Application Process:

Interested candidates are invited to submit their CV. A short cover note on your experience and motivation is welcome but not required. We review applications on a rolling basis. The process starts with a behavioural screening interview with the hiring manager; candidates who progress go through a full interview loop that, for this full stack role, includes a hands-on programming session (Java preferred, as it's our backend language; another mainstream language is fine if you're more fluent) and a product-focused system design discussion.