Senior Software Engineer, Frontend

Job not on LinkedIn

🕒 April 20

🇬🇧 United Kingdom – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

🇬🇧 UK Skilled Worker Visa Sponsor

This company has sponsored UK Skilled Worker visas in the past.

👻 Ghost score 29%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Firstup

WebsiteLinkedInAll Job Openings

201 - 500 employees

🏢 Enterprise

👥 HR Tech

☁️ SaaS

Enterprise • HR Tech • SaaS

Firstup is a comprehensive employee experience platform designed to deliver highly personalized communication at scale. It offers an intelligent communication platform that connects with any environment, while ensuring data security and infrastructure integrity. Firstup's solutions aim to engage employees through various channels including email, mobile apps, and intranet, making every interaction meaningful across the employee journey. The platform integrates seamlessly with tools like Microsoft 365 and ServiceNow to enhance service management and workforce productivity.

📋 Description

• Build scalable frontend applications using modern React patterns and a component-driven architecture. • Own the design and implementation of a reusable, accessible component library and documentation. • Define the frontend testing strategy (Unit, Integration, E2E) including visual regression and user interaction coverage. • Optimize client-side performance and ensure production readiness through observability, error monitoring, and rapid incident resolution. • Leverage and advocate for AI-assisted tools (e.g., GitHub Copilot, Claude) to accelerate development while maintaining rigorous engineering judgment and accountability for code correctness. • Drive team-wide best practices, conduct quality code reviews, and mentor engineers to elevate overall engineering quality. • Partner with Product and Design to translate requirements into intuitive UI, making informed technical trade-offs in the face of ambiguity.

🎯 Requirements

• 5+ years building reliable, high-performance frontend applications at scale. • Expertise in React (Hooks, State Management), TypeScript, and modern tooling (Vite, Webpack). • Proficiency with Jest, React Testing Library, and Cypress/Playwright. • Proven experience building design systems or component libraries with a focus on WCAG accessibility. • Demonstrated ability to use and critically validate AI-assisted coding outputs (e.g., Claude, Copilot). • Bachelor’s in CS or equivalent practical experience.

🏖️ Benefits

• Excellent PTO program • Great health benefits • Casual and friendly environment • Remote work • Leadership team who believes in your growth