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# Frontend Engineer

- **Company:** Harnham
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £70,000.0 - £80,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Agile Methodology, Artificial Intelligence, Application Performance Management, Business Software, Cascading Style Sheets (CSS), Software as a Service, Software Quality, Continuous Integration, Data Visualization, Cursor, Web Development, JQuery, Performance Tuning, Preprocessor, TypeScript, Enterprise Software Applications, ReactJS, Claude Code, Software Application Programming, Backend, Agentic-AI, Vue.js, AngularJS, React Native, Tools for Reporting, Front End Software Development
- **Published:** October 28, 2026
- **Apply:** https://www.reed.co.uk/jobs/frontend-engineer/57498840

## About the Role

* Strong commercial experience building applications with React and TypeScript.
 * Experience developing complex enterprise software, SaaS platforms, or data-rich products.
 * Expertise in state management, front-end architecture, testing, and performance optimisation.
 * Understanding of front-end security principles and best practices.
 * Experience working within cloud-based development environments and modern CI/CD processes.
 * Regular use of AI-assisted development tools such as Cursor, Claude Code, or similar.
 * A product-focused mindset with a passion for delivering high-quality user experiences.

Desirable experience includes:

 * React Native development.
 * AI-powered or agentic product development.
 * Design systems, theming frameworks, or micro-frontend architectures.
 * Financial or data visualisation products., * Agile Methodology
 * Angular (Web Development)
 * Communication Skills (Key)

## Description

This is an opportunity to join a well-funded AI software business at a pivotal stage of growth. You'll help shape the front-end experience of a sophisticated platform used to manage complex workflows, data-rich processes, and AI-powered decision making. Working within a small, high-calibre engineering team, you'll have significant ownership, direct exposure to leadership, and the chance to influence both product and technical direction., You will:

 * Build and enhance complex front-end applications using React and TypeScript.
 * Develop data-heavy dashboards, analytics tools, and workflow-driven user experiences.
 * Design intuitive interfaces for AI-powered features and agent-based workflows.
 * Create responsive, performant, and accessible user experiences for enterprise users.
 * Contribute to shared component libraries and scalable front-end architecture.
 * Collaborate closely with product, design, and engineering stakeholders.
 * Implement robust testing practices and maintain high standards of code quality.
 * Optimise application performance, scalability, and front-end security., * CSS & Preprocessors
 * Front-End Development
 * JavaScript & jQuery
 * React.js Development
 * TypeScript (Web Development)
 * Vue.js Front-End Development

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