Senior Full-Stack Engineer for Critical National Infrastructure

Leidos; Ham; Hybrid; GBP 61,500 - 78,800; Full time

Job summary

Leidos in the United Kingdom is seeking a Senior Software Engineer (Full Stack) to sustain the current environment and deliver new capabilities across backend and frontend.

You will work on REST APIs in Java and modern SPA front-ends using React/TypeScript, Angular, or Vue, with CI/CD and automated tests. The role includes mentoring and collaboration within an Agile team on a key national infrastructure programme.

Qualifications

• Extensive hands-on delivery using Java (Java 8+ and modern versions) and REST API design.
• Modern SPA development experience with React/TypeScript, Angular, or Vue.
• Strong understanding of design patterns and structured software development.

Responsibilities

• Deliver high-quality, production-ready software across backend and frontend.
• Develop, test, document, and deploy software enhancements.
• Contribute to full-stack delivery with REST APIs and SPA front-ends.
• Mentor and guide less experienced engineers and ensure code quality and reviews.

Skills

Java

REST APIs

React

TypeScript

Angular

Vue

Design patterns

CI/CD

Jira

Code reviews

Tools

Jira

Bitbucket

Bamboo

Job description

Leidos in the United Kingdom is seeking a Senior Software Engineer (Full Stack) to sustain the current environment and deliver new capabilities across backend and frontend.

You will work on REST APIs in Java and modern SPA front-ends using React/TypeScript, Angular, or Vue, with CI/CD and automated tests. The role includes mentoring and collaboration within an Agile team on a key national infrastructure programme.