Senior Frontend Engineer

A fast-growing, VC-backed cybersecurity SaaS company is scaling its engineering team following strong growth across Europe. The platform uses AI to detect insider threats and deliver personalised security training, helping organisations reduce human cyber risk through real-time simulations and behavioural analysis. With a rapidly expanding customer base and a product designed to integrate seamlessly into tools like Microsoft 365, the company is building the next generation of automated, intelligent cybersecurity solutions. The Role As a Senior Frontend Engineer, you’ll take ownership of key parts of the frontend experience across both the product and web platform. You’ll work closely with design and backend teams to build high-performance, scalable, and user-centric interfaces, with a strong focus on optimisation and architecture. Key Responsibilities Build and optimise modern frontend applicationsImprove performance, load times, and runtime efficiencyDesign scalable frontend architecture and reusable componentsWork on user journeys, onboarding, and conversion flowsDevelop data-heavy dashboards and security insights interfacesCollaborate cross-functionally with product, backend, and design Key Requirements We’re particularly looking for engineers with strong experience in: Performance optimisation (speed, responsiveness, UX)Tree shaking / bundle optimisation (reducing unused code)Frontend architecture (scalable, maintainable systems)Working effectively within delivery timelines and constraints Tech Stack ReactTypeScriptModern tooling (Vite, Tailwind, etc.)Data visualisation (e.g. D3.js beneficial) What We’re Looking For Strong experience with React + TypeScript in production environmentsExperience building scalable frontend systemsGood understanding of frontend performance best practicesCollaborative, product-focused mindset Why Join ✅ High-growth cybersecurity product company tackling real-world threats✅ Work on a modern AI-driven platform solving human risk in security✅ Small, high-impact team with strong ownership✅ Modern engineering environment and tech stack Process Intro callShort technical taskFinal discussion