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# Senior Frontend Engineer

- **Company:** VanRath
- **Location:** Belfast, UK
- **Experience:** Expert
- **Salary:** £70,000.0 - £80,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Software Quality, Code Review, Package Management Systems, E2e Testing, Strategies of Testing, TypeScript, Web Applications, Web Usability, Cloud Platform System, ReactJS, Caching, Backend, Material UI, Build Tools, React Native, Front End Software Development, Api Design, Serverless Computing
- **Published:** May 13, 2026
- **Apply:** https://www.vanrath.com/job/senior-frontend-engineer-bbbh14983-1778668823

## About the Role

* 5+ years' professional experience in JavaScript or TypeScript development
 * Strong expertise in React and modern frontend architecture
 * Experience with modern build tools and monorepo-based development environments

Desirable Experience

 * Experience with API design and type-safe communication patterns
 * Familiarity with AWS cloud services and infrastructure as code
 * Experience with modern UI frameworks and component libraries
 * Knowledge of testing strategies including unit, integration, and E2E testing
 * Experience optimising performance in large-scale web applications
 * Exposure to mobile development frameworks such as React Native

## Description

* Build and maintain modern React applications using TypeScript and contemporary frontend tooling
 * Design and implement type-safe APIs spanning frontend and backend systems
 * Develop and support serverless backend functions and cloud-based infrastructure
 * Work within monorepo architectures using modern build tools and package management systems
 * Write and maintain automated tests including unit, integration, and end-to-end testing
 * Optimise frontend performance including load times, bundle size, caching strategies, and Core Web Vitals
 * Conduct code reviews and maintain high standards across TypeScript, security, and code quality
 * Collaborate with cross-functional teams to deliver robust, user-focused solutions


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