JavaScript Developer

Salary: £65,000 - 105,000 per year

Requirements:

• Strong commercial experience developing applications with React and TypeScript
• Excellent JavaScript, HTML and CSS fundamentals, including responsive and accessible design
• Experience building secure applications and integrating frontend services with APIs
• Strong testing experience, ideally including Jest and React Testing Library
• Comfortable working with Git-based development, CI/CD and modern engineering practices
• Experience within consultancy, government, law enforcement or similarly complex environments is particularly valuable
• Exposure to technologies such as Entra ID, MSAL, Keycloak, Redux, React Router, Tailwind CSS, Docker, GitHub Actions or data visualisation is useful
• Eligible for UK Security Clearance

Responsibilities:

• Design and build modern web applications using React, TypeScript and JavaScript
• Develop dashboards, data-rich interfaces and intuitive user journeys for complex operational environments
• Work directly with technical and non-technical stakeholders to understand requirements and shape practical solutions
• Integrate applications with REST APIs, authentication services and wider enterprise platforms
• Produce prototypes and proof-of-concepts to test ideas and support consultancy engagements
• Contribute to testing, code reviews, CI/CD and engineering standards across delivery teams

Technologies:

• CI/CD
• CSS
• Docker
• Frontend
• Git
• GitHub
• Support
• JavaScript
• Jest
• REST
• React
• Redux
• Security
• TypeScript
• Web
• Java

More:

We are a growing technology consultancy delivering digital transformation programmes across law enforcement, public safety and wider government. Youll work alongside consultants, architects and engineers, contributing from early discovery and prototyping through to secure, production-ready applications. Our work is varied and user-focused, addressing challenges where accessibility, security and effective use of information are critical. Developers have genuine influence over the solutions we deliver, with hands-on engineering experience and exposure to strategy, discovery and digital challenges across the public sector.

last updated 39 week of 2026