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# Senior Frontend Engineer (Web & App)

- **Company:** Quantum
- **Location:** Maidstone, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Apple IOS, Automation of Tests, Python (Programming Language), TypeScript, ReactJS, Backend, React Native, Front End Software Development, GPT
- **Published:** October 1, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-frontend-engineer-web-app/49424838

## About the Role

Python a strong plus rather than a hard requirement You do your best work as part of a team and enjoy sharing knowledge as much as gaining it Comfortable navigating a fast-paced environment Excellent written and verbal communication skills A genuine desire to learn, grow, and lift others around you What You'll Get Private Health Care (Bupa) Hybrid Working (3 days in office) Travel Insurance Competitive Base Salary Company Bonus Scheme Paid for AI Subscription (Claude / ChatGPT / Gemini) Market-Leading Training Programme Recognition & Reward Scheme Annual Company Conference Regular Happy Hours & Team Lunches Free Coffee, Drinks & Snacks What's the next step? Our hiring process ensures we're recruiting the right people for the role. We ensure that people are as suitable for us as we are for them. #J-18808-Ljbffr

## Description

release pipeline with automated testing, and raising the bar on how our reward products look and feel. Key Responsibilities Own the frontend across the Cashback and Custard apps and websites, from build through to release Ship new app functionality that moves revenue and retention, working closely with product and backend Build and maintain automated end-to-end tests so staging is stable and releases are predictable Raise the standard of web and app UX across both reward brands Work full stack where it counts, partnering with our backend developers on the Python services behind the apps About You A strong senior frontend engineer, production-grade with React and TypeScript on the web Hands-on experience building and shipping mobile apps, ideally React Native across iOS and Android A sharp eye for UX and design you care how a product feels, not just whether it works Comfortable owning end-to-end and staging test automation as part of how you ship Happy working across the stack, with


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