Senior Frontend Developer

Senior Front-End/UX Developer – National Security – eDV Cleared

• Role: Senior Front-End/UX Developer
• Location: Gloucester
• Clearance: Enhanced DV
• Salary: £70,000 - £90,000

About the Role

We’re looking for an experienced Front-End Engineer with strong UX capability to join a secure delivery team building user-centric digital services for high-priority government programmes. You’ll shape and deliver intuitive, accessible, and performant interfaces that support mission-critical operations in sensitive environments.

Working closely with researchers, product teams, and technical specialists, you'll take responsibility for designing, prototyping, and implementing front-end solutions that balance usability, accessibility, security, and performance constraints.

You’ll be involved across the full lifecycle — from early discovery and iterative design through to engineering, testing, and optimisation within secure cloud and on-premise environments.

What You’ll Do

• Plan and conduct user-centred design activities including sketching, wireframes, prototypes, journey mapping, and feedback loops.
• Translate research findings into clean, intuitive UI designs aligned to government or project-specific UX guidelines.
• Create and maintain component libraries, design systems, and reusable front-end patterns.
• Build high-quality front-end applications using modern frameworks (React / Angular / Vue) with TypeScript or JavaScript.
• Implement responsive, accessible (WCAG 2.1 AA) and high-performance interfaces suitable for restricted or low-bandwidth environments.
• Integrate UIs with backend APIs, microservices, and real-time data sources.
• Optimise front-end applications for speed, accessibility, and security-hardening requirements.
• Collaborate with multidisciplinary Agile teams, contributing to ceremonies, peer reviews, and backlog refinement.
• Work closely with developers, testers, user researchers, and architects to ensure seamless end-to-end delivery.

About You

We’re particularly keen to speak with Developers who can blend strong engineering skills with a solid understanding of UX principles:

• Significant experience building modern front-end applications using React, Angular, or Vue.
• Strong capability with HTML5, CSS/SASS, JavaScript, TypeScript, and responsive design.
• Demonstrable UX experience: wireframing, prototyping, user flows, interaction design, and usability.
• Confident applying accessibility and inclusive design standards (e.g., WCAG 2.1 AA).
• Experience integrating with RESTful APIs and handling JSON-based data exchanges.
• Familiarity with Agile delivery (Scrum/Kanban) and collaborative engineering practices.
• Understanding of Secure by Design principles and delivering solutions within regulated or sensitive environments.

Security Requirements

Due to the nature of the work, current eDV Clearance is essential . Unfortunately, applicants without active eDV clearance cannot be considered.