Staff Full-Stack Engineer – Hybrid Bath, UK Defence

Sellick Partnership; Bath; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Salary reviews and bonuses

Enhanced leave

Life assurance

Company social events

Job summary

Sellick Partnership seeks a Staff Full-Stack Engineer for a major UK defence programme, based around Bath with a hybrid pattern (approximately three days onsite per week).

You'll take technical ownership, lead architectural discussions and design integrations across data, APIs and external platforms while hands-on coding in Java/Angular. This role combines senior technical ownership with mentorship and fast-paced delivery in a regulated environment.

Responsibilities

• Take technical ownership of substantial areas of a large-scale UK defence technology programme.
• Design and build integrations between a core software platform and external systems including ERP platforms, data lakehouses, optimisation engines and partner technologies.
• Build and evolve backend services, APIs and user-facing functionality.
• Work across a modern technology stack including Java, SQL and Angular.
• Design REST and event-driven integrations and introduce streaming or Change Data Capture (CDC) patterns where appropriate.
• Lead technical design sessions and help shape architecture across data, integrations and APIs.
• Make architectural decisions around scalability, maintainability, security and performance.
• Improve engineering standards across automated testing, CI/CD, observability and code quality.
• Remain hands-on with development while taking increasing responsibility for technical leadership.
• Mentor Senior and other Engineers, helping develop engineering capability across the team.
• Work directly with technical and non-technical customer stakeholders, explaining complex engineering decisions clearly.

Skills

SQL

Data engineering

Backend services

APIs

REST

Event-driven

Systems integration

ERP integration

Angular

Data lakehouse

CI/CD

Observability

Monitoring

Java

Job description

Sellick Partnership seeks a Staff Full-Stack Engineer for a major UK defence programme, based around Bath with a hybrid pattern (approximately three days onsite per week).

You'll take technical ownership, lead architectural discussions and design integrations across data, APIs and external platforms while hands-on coding in Java/Angular. This role combines senior technical ownership with mentorship and fast-paced delivery in a regulated environment.