Frontend / UI Engineer (SC clearance) (IT)

LA International Computer Consultants Ltd
London

Our Client are looking for an SC cleared Frontend Engineer who thrives in environments where information is dense, the interface is critical, and the work matters. You excel at building responsive, intuitive UIs that surface complex machine learning insights to end users with clarity and usability. You care about the user journey as much as the underlying data, and you are motivated by delivering real-world impact in demanding operational settings. Responsibilities:

  • Design and implement frontend interfaces that support live and retrospective exploration of data from complex systems
  • Build and iterate on React-based UIs for transcription review, dynamic querying, and data visualisation
  • Integrate user-facing features with backend APIs and machine learning services, including LLM outputs, NLP pipelines and structured data stores
  • Develop robust offline-first interfaces to support secure, air-gapped environments with no public internet access
  • Create data visualisations (e.g., network graphs, timelines) to support scenario driven analysis and operational decision making
  • Build UI components for summarisation, report generation and visual validation of machine-derived insights
Experience Required:
  • Deep experience building production-quality React applications with modern tooling (TypeScript, hooks, state management)
  • Demonstrated ability to create rich, interactive data visualisations using libraries such as visx, Chart.js, Plotly, Recharts, D3 or similar
  • Experience designing and implementing UIs that surface complex analytical outputs (e.g., from LLMs, graph databases, summarisation pipelines)
  • Experience working with design systems, component libraries, and responsive layouts
  • Proven ability to work closely with backend APIs, including in data-heavy or streaming contexts
Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take up to a minimum 10 weeks. LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds. Award Winning LA International, winner of the Recruiter Awards for Excellence, Best IT Recruitment Company, Best Public Sector Recruitment Company and overall Gold Award winner, has now secured the most prestigious business award that any business can receive, The Queens Award for Enterprise: International Trade, for the second consecutive period.

Posted 2025-09-02

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