Secure Government UX Front-End Developer

The Role

As a UX Front‑End Developer at Envitia, you will design, prototype, and build intuitive, accessible, and high‑performing user interfaces that support secure government applications. Working within our Consulting division, you will contribute directly to enhancing mission‑critical digital services used across our Security & Intelligence customer base.

In this role, you’ll bring together strong UX and UI expertise with practical front‑end development skills to translate complex user needs into elegant, reliable solutions. You’ll work collaboratively with product owners, user researchers, backend engineers and security architects to ensure that usability, accessibility and performance requirements are met throughout the development lifecycle.

This position is well suited to someone who thrives in technically challenging environments, enjoys solving real user problems and is confident operating within highly secure, multidisciplinary project teams. You’ll have the opportunity to shape the user experience of impactful national‑level systems while advancing Envitia’s reputation for delivering high‑quality, user‑centred digital solutions.

• Conduct user‑centred design activities, including wire framing, prototyping, workflow creation and iterative usability testing.
• Translate user research insights into intuitive interface designs aligned with GDS standards, industry UX best practice or customer‑specific guidelines.
• Develop and maintain UI design systems, reusable component libraries and accessibility‑compliant layouts.

• Build high‑quality front‑end components using modern frameworks such as React, Angular or Vue, alongside Type Script/JavaScript.
• Implement responsive, accessible and performant interfaces suitable for secure and restricted environments.
• Integrate front‑end applications with backend services, APIs and operational data sources.
• Optimise UI performance for speed, accessibility and use in constrained network conditions.

• Work within cross‑functional Agile teams to deliver user‑focused digital services from discovery through to deployment.
• Contribute to sprint ceremonies, backlog refinement and peer code/design reviews.
• Collaborate closely with UX researchers, developers, testers and security/solution architects to ensure seamless, end‑to‑end delivery.
• Produce clear documentation, interface specifications and design artefacts to support delivery and ongoing maintenance.

• Ensure all interfaces meet required accessibility standards (e.g., WCAG 2.1 AA or client‑specific mandates).
• Apply secure coding and design principles when working within classified or sensitive environments.
• Adhere to Envitia’s engineering, design and Dev Sec Ops  standards, contributing improvements where appropriate.
• Support continuous improvement by contributing to Envitia’s internal UX and front‑end development capability frameworks.

• Strong experience designing and developing modern front‑end applications using React, Angular or Vue.
• Proficiency in HTML5, CSS3/SASS, JavaScript, Type Script and responsive design techniques.
• Demonstrable UX capability: wireframes, prototypes, user flows, interaction design and usability principles.
• Experience applying accessibility standards (e.g., WCAG 2.1 AA) and inclusive design practices.
• Familiarity with Agile delivery (Scrum or Kanban) in multidisciplinary teams.
• Experience consuming RESTful APIs, integrating with backend services and working with JSON data structures.
• Experience working within Defence, National Security, Central Government or similarly regulated sectors.
• Ability to work in secure environments and follow Secure by Design and Dev Sec Ops  principles.

The successful candidate must hold a current DV security clearance with the ability to go through an enhanced level.

It is anticipated the role will require up to 80% (4d/wk) onsite working at client location in Gloucester.

At Envitia, we believe that our greatest asset is our talented and dedicated team. We are…