Skills

Leadership Python Java JavaScript TypeScript HTML CSS PostgreSQL GitHub CI/CD DevOps Docker Jenkins Architecture Application Architecture Linux Windows Databases Analytical Skills Azure react AWS Junit Spring GCP Spring Boot CI/CD Pipelines GitHub Actions

Job Specifications

Lead Full Stack Developer

Rate: Up to £650/day (Outside IR35)

Duration: 6 months initially

Location: Hybrid - Milton Keynes / Remote

Clearance: SC Cleared

Overview

An exciting opportunity for a Lead Full Stack Developer to join a small, high-performing tech company supporting a major UK government programme. You'll play a key role in the development and evolution of a cutting-edge, AI-enabled digital service used across multiple government departments.

This role combines hands-on development with technical leadership, working closely with architects, product stakeholders, and client teams to deliver secure, scalable software solutions.

Responsibilities

Front End

Design and build modern, responsive user interfaces
Develop using React, TypeScript, JavaScript, HTML, CSS
Drive strong UX and cross-browser compatibility

Back End

Design and develop APIs and services
Build server-side logic using Java (Spring Boot)
Contribute to overall application architecture

Data & DevOps

Design and maintain relational databases (PostgreSQL preferred)
Implement CI/CD pipelines (e.g. GitHub Actions, Jenkins)
Deploy and operate services in cloud environments (AWS, Azure or GCP)
Use containerisation tools such as Docker

Quality & Collaboration

Lead and participate in code reviews
Write unit, integration and end-to-end tests (JUnit, Testcontainers, Vitest, Storybook)
Maintain clear technical documentation
Work closely with product, architecture and delivery teams
Embed security best practices (auth, access control, secure data handling)

Essential Skills & Experience

Strong experience delivering complex full-stack applications
Commercial expertise in Java plus at least one other back-end language (ideally Python)
Solid experience with React and modern front-end tooling
Strong API design and integration experience
Good working knowledge of Linux and Windows environments
Proven problem-solver with strong analytical skills
Experience with relational databases, ideally PostgreSQL
Comfortable working in small, fast-moving delivery teams
Able to commute to Milton Keynes as required

About the Company

Experis is a global leader in IT professional resourcing, project solutions and managed services. As the need for IT skills accelerates, we help organisations transform their digital infrastructure, enterprise applications, cloud and cyber security. Through Experis Academy, we deliver the powerful combination of in-demand technical skills together with the soft skills that are critical for business success. Experis is part of ManpowerGroup, a Fortune 500 Global Business and world leader in innovative workforce solutions. Know more