Lead Software Engineer

Company

La Fosse

Location

United Kingdom

Posted At

8/12/2025

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Description

Lead Software Developer (React, TypeScript, JavaScript)

Remote (UK-based | Remote) | Up to £75,000

Our client is a tech-for-good company that provides advanced software solutions to public sector and enterprise organisations operating in highly secure, data-driven environments.

As part of their growth, they’re hiring a lead software engineer to lead the frontend of one of their flagship applications. This role combines hands-on React development with the leadership of a small, skilled team of engineers.

You'll work in a collaborative, cross-functional environment focused on building responsive, data-rich interfaces that support real-world investigative work.

What You’ll Do:

Build Responsive Frontends: Develop new UI features and components using React, TypeScript, and modern JavaScript.
Lead a Small Team: Line manage 2–3 engineers, providing mentorship, feedback, and guidance to help them grow.
Collaborate Cross-Functionally: Work closely with product managers, UX designers, and backend engineers to bring complex workflows to life.
Integrate APIs Effectively: Deliver scalable and reliable client-side functionality powered by RESTful and GraphQL APIs.
Promote Quality & Efficiency: Drive testing practices, performance optimisation, and development standards across the frontend team.
Shape the Development Process: Contribute to tooling, CI/CD workflows, and frontend architecture using technologies like GitHub, CircleCI, and AWS.

What They’re Looking For:

Strong hands-on experience with React, TypeScript, JavaScript, HTML5, and CSS3
Proven ability to hold line management responsibilities/lead or mentor developers in a commercial environment
Track record of leading projects end-to-end
Solid understanding of integrating APIs using REST or GraphQL
Experience working with component libraries, design systems, or scalable frontend frameworks
Familiarity with testing practices and modern CI/CD pipelines
Excellent collaboration and communication skills

Bonus if you've:

Experience with MobX or other state management tools
Knowledge of AWS, GitHub Actions, or CircleCI
Exposure to data visualisation or geospatial mapping tools
Understanding of backend environments (Python, Java) for context
Experience working in secure, high-trust software environments

Why Join?

Fully remote (UK-based) with flexible working
Opportunity to lead meaningful software used by public sector and defence clients
Supportive, low-ego engineering culture
Greenfield products, long-term roadmap, and clear team ownership
Backed by a global tech group with a strong track record of sustainable growth

This is a great opportunity for a lead frontend engineer ready to step into or continue growing in a line management role, while working on impactful, complex applications at the intersection of data and intelligence.

Apply now for consideration!