Front End Developer - DV Cleared

CBSbutler Holdings Limited trading as CBSbutler; Greater London; On-site; GBP 92,000 - 100,000; Part time

Job summary

CBSbutler Holdings Limited trading as CBSbutler is seeking an experienced Front End Developer to build intuitive, secure, role-aware interfaces for a next-generation Defence Intelligence platform, based in London four days a week onsite.

The role requires strong React and TypeScript skills, REST API integration, and DV security clearance, with Agile delivery and collaboration with UX and backend teams in a mission-critical environment.

Qualifications

• MOD/Defence or national security experience required.
• Strong React development experience.
• Strong TypeScript capability.
• Experience consuming REST APIs and collaborating with backend teams.
• Experience building accessible, responsive, maintainable UIs.
• Experience using Git in Agile delivery environments.

Responsibilities

• Develop and maintain frontend applications using React and TypeScript.
• Build reusable UI components aligned with a design system and library.
• Collaborate with UX Designers to translate wireframes into production interfaces.
• Integrate frontend with REST APIs, workflow services and identity/access controls.
• Develop role-aware dashboards, task views and operational queues.
• Apply accessibility, responsive design and usability best practices.
• Participate in agile ceremonies and contribute to QA.

Skills

React development

TypeScript

REST APIs

Accessible UI

Git

Secure environments

Tools

Material UI

Design System

Job description

Front End Developer

500- 540 per day Outside IR35

React TypeScript Secure, Analyst-Facing Applications

LocationLondon (MOD site)

Working Pattern4 days per week onsite

ClearanceCurrent DV Security Clearance required

BackgroundMOD / Defence / National Security experience required

The Opportunity

We're looking for an experienced Front End Developer to build intuitive, secure and role-aware interfaces for a next-generation Defence Intelligence platform.

You'll work closely with UX Designers, Back End Developers and wider delivery teams to turn complex operational requirements into accessible, maintainable and high-performing applications that improve visibility, streamline workflows and support users in a mission-critical environment.

This is an excellent opportunity to work on modern digital capabilities within a highly secure Defence environment.

About the Programme

This programme is delivering an AI-enabled Defence Intelligence capability designed to improve visibility of operational information, reduce administrative burden and support faster, more informed decision-making.

As part of an agile, multidisciplinary team, you'll help deliver modern frontend applications that integrate with secure backend services and existing Defence platforms.

Key Responsibilities

• Develop and maintain frontend applications using React and TypeScript.
• Build reusable UI components aligned with a coherent design system and component library.
• Work closely with UX Designers to translate user journeys, wireframes and prototypes into production-ready interfaces.
• Integrate frontend applications with REST APIs, workflow services and identity/access mechanisms.
• Develop role-aware dashboards, task views, status tracking and operational work queues.
• Apply accessibility, responsive design and usability best practices.
• Participate in agile ceremonies, sprint delivery, demonstrations and user feedback sessions.
• Contribute to frontend testing, quality assurance and continuous improvement.

Essential Skills & Experience

• Demonstrable experience delivering software within MOD, Defence, National Security or similarly secure environments.
• Strong commercial React development experience.
• Strong TypeScript capability.
• Experience consuming REST APIs and collaborating closely with backend engineering teams.
• Experience building responsive, accessible and maintainable user interfaces.
• Good understanding of component-based development and design system principles.
• Experience using Git within agile delivery environments.

Desirable Experience

• Experience working with Figma and modern UX/design workflows.
• Experience with Material UI, (url removed) Design System, MOD design patterns or equivalent component frameworks.
• Experience developing workflow-driven applications.
• Experience implementing secure authentication and role-based access control.
• Experience developing search-led user interfaces.
• Experience supporting applications deployed in classified or highly regulated environments.

Mandatory Requirements

• Current DV Security Clearance.
• Ability to work onsite at an MOD location in London four days per week.
• Previous experience delivering within MOD, Defence, Defence Intelligence, Strategic Command or wider National Security organisations.
• Comfortable working with OFFICIAL-SENSITIVE and classified material where authorised.

Ways of Working

• Agile delivery within a multidisciplinary team.
• Close collaboration with Defence stakeholders, Product, Delivery, UX and Engineering teams.
• Secure-by-design approach with a strong focus on audit, traceability, access control and assurance.
• Practical focus on creating intuitive, reliable applications while maintaining operational accountability.

What We're Looking For

We're interested in Front End Developers who can demonstrate:

• Successful delivery within secure MOD or Defence environments.
• Strong React and TypeScript development experience.
• The ability to turn complex UX requirements into accessible, maintainable and intuitive interfaces.
• Excellent communication skills across technical and non-technical stakeholders.
• A practical understanding of agile delivery and modern frontend engineering.
• Awareness of secure system delivery, accreditation considerations and operational governance.

Rate: 500- 540 per day (Outside IR35)

Location: London (4 days onsite)

Clearance: Current DV Security Clearance required