UX Front End Developer - National Security & Defence

Join the Growth Story at Envitia

Envitia operates at the heart of the UK's most sensitive and high-profile operations. Our approach is entirely mission-focused, enabling customers to see more, decide faster, and act with confidence across complex domains.

We deliver situational awareness and information advantage across C5ISR, fusing cyber, geospatial, and kinetic data into an operational picture. This transforms fragmented data into a shared understanding of the battlespace, delivering actionable insight when it matters most.

Our solutions are secure-by-design, built from the ground up to protect sensitive information and ensure resilience in contested environments. We simplify complex heterogeneous data sources into a rich picture of fused intelligence, providing a digital backbone that underpins success.

We operate as small teams delivering fast value, blending deep technical expertise with agile methods to deliver measurable outcomes. Every engagement focuses on capability, clarity, and confidence for those who protect the nation.

A career with Envitia enables you to work with mission driven innovation.

We're thrilled to announce that Envitia has been named one of the Sunday Times Top 100 Medium-Sized Companies to Work For in 2025- a prestigious recognition that highlights our commitment to creating an outstanding workplace where innovation, collaboration, and personal growth thrive.

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.

Job Responsibilities User Experience & Interface Design

• Conduct user-centred design activities, including wireframing, 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.

Front-End Development

• Build high-quality front-end components using modern frameworks such as React, Angular or Vue, alongside TypeScript/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.

Delivery & Collaboration

• 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.

Quality, Standards & Governance

• 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 DevSecOps standards, contributing improvements where appropriate.
• Support continuous improvement by contributing to Envitia's internal UX and front-end development capability frameworks.

Skills Required

Essential:

• Strong experience designing and developing modern front-end applications using React, Angular, or Vue.

• Proficiency in HTML5, CSS3/SASS, JavaScript, TypeScript, and responsive design techniques.

• Demonstrable UX capability: wireframes, prototypes, user flows, interaction design, 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 DevSecOps principles.

Security Clearance Requirements

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

Location

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

What it's like to work at Envitia

At Envitia, we believe that our greatest asset is our talented and dedicated team. We are committed to fostering a work environment where every employee feels valued, supported, and motivated to excel. As part of this commitment, we offer a comprehensive range of benefits designed to enhance both your professional and personal well-being.

• Annual Leave: 25 days plus your birthday off. You will have the ability to buy and sell 5 days holiday to work around your needs.
• Private Healthcare Coverage: Our health plan is tailored to meet the diverse needs of our employees with additional levels for family if required.
• Training & Skills Development: Stay ahead in your career with ongoing training opportunities and skill development initiatives tailored to your evolving needs.
• Fitness Reimbursement: We encourage an active lifestyle. Our fitness reimbursement program helps you stay fit by covering a portion of your gym memberships or fitness-related expenses.
• Life Assurance: Gain peace of mind with extensive life insurance coverage that ensures financial protection for you and your loved ones.
• Pension Contribution: Plan for your future with our pension options. We provide resources and support to help you build a secure financial foundation.
• Perkbox Subscription: Enjoy exclusive discounts on a variety of products and services. From technology to entertainment, we've partnered with various businesses to bring you special perks.
• Internal Reward Schemes: Be rewarded for your exceptional contributions through our employee recognition initiatives that celebrate your achievements.
• Community Engagement & Volunteer Opportunities: Contribute to meaningful causes with company-sponsored volunteer programs, fostering a sense of community and social responsibility.

Inclusion at Envitia

At Envitia, we celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applicants from all backgrounds and walks of life. We believe that our strength lies in our differences, and we are dedicated to fostering a workplace where everyone feels valued, respected, and empowered.

We encourage applications from people of all abilities, ages, genders, sexual orientations, races, ethnicities, and religions. We strive to support a culture of inclusion, accessibility, and work-life balance.

If you require any accommodations during the application or interview process, please let us know.