> Markdown version of [/jobs/ext/348401-senior-front-end-developer](https://www.wearedevelopers.com/jobs/ext/348401-senior-front-end-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Front End Developer - **Company:** 30Seconds Group - **Location:** Manchester, UK - **Experience:** Expert - **Salary:** £50,000.0 - £60,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Cascading Style Sheets (CSS), TypeScript, Web Applications, ReactJS, Front End Software Development, Api Design - **Published:** June 19, 2026 - **Apply:** https://uk.indeed.com/viewjob?jk=46766a4bc82bb3f4 ## About the Role Do you have experience in TypeScript?, * 5+ years building production web apps, with significant React and TypeScript experience * A track record of owning front-end work end-to-end: architecture, delivery, testing, performance, error handling * Strong product sense: you push back on specs that don't make sense and propose better alternatives * Solid CSS and a real eye for UI quality (you need not be a designer, but you should care) * Comfort in a small, fast-moving team, integrating with REST/modern APIs ## Description You'll be the senior front-end engineer on our cloud-based notice management platform, owning the experience property managers rely on daily. Use cases include pushing a fire safety notice to a building and residents see it within seconds, setting a maintenance notice and have it displayed on the pre-defined schedule. The product is in active development, so there's room to shape both the codebase and its direction. The team is small enough that you'll see the impact of what you ship, and senior enough that we'll trust your calls. What you'll do * Lead front-end development and own the architecture of the React/TypeScript codebase: set conventions, raise the quality bar * Build interfaces for content scheduling, media upload, portfolio management, and resident engagement (QR feedback, polls, surveys) * Work directly with back-end engineers on API design, not just consuming what's handed to you * Contribute to product decisions, as you'll often have the clearest view of what's possible * Care about reliability and accessibility, people use this to communicate critical safety information ## Related Videos - [Microfrontends at Scale](https://www.wearedevelopers.com/videos/236-microfrontends-at-scale) - [API Design - Getting Started](https://www.wearedevelopers.com/videos/33-api-design-getting-started) - [Do TypeScript without TypeScript](https://www.wearedevelopers.com/videos/327-do-typescript-without-typescript) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Vuejs and TypeScript- Working Together like Peanut Butter and Jelly](https://www.wearedevelopers.com/videos/127-vuejs-and-typescript-working-together-like-peanut-butter-and-jelly) ## Related Articles - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Top 7 CSS Frameworks in 2025](https://www.wearedevelopers.com/magazine/362-top-7-css-frameworks-in-2025) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers)