Frontend Developer

Are you a frontend engineer ready to work on genuinely cutting-edge technology and help build a brand-new UI team from the start?My client is a rapidly scaling unicorn, now valued at over $3 billion, building a next-generation cloud security platform. Using advanced eBPF-powered sensors, they deliver real-time threat protection across modern cloud environments.With an ambitious growth strategy, they plan to hire over 50 engineers and technical specialists in Belfast this year, building one of the most talented tech teams in the city. The UI team is brand new, so you will join at the very beginning and have a real hand in shaping how it works, what it builds and the standards it sets.Job DescriptionAs a Frontend Engineer, you will design, build and evolve the frontend of a cloud-native security platform, working closely with product managers, designers and backend engineers to deliver high-performance, scalable user interfaces.Key responsibilities include:Designing and developing frontend components from concept through to productionLeading frontend implementation across key product featuresContributing to architectural and technical design decisionsChampioning product quality and user experience across the platformCollaborating on API design with backend and platform teamsOptimising application performance, scalability and reliabilityTaking part in code reviews and design reviews to maintain high engineering standardsPersonal SpecificationEssential Criteria3+ years’ experience in frontend engineeringStrong commercial experience with React and TypeScriptA solid understanding of core web technologies (HTML, CSS, JavaScript)Experience working with APIs and collaborating with backend teamsExposure to CI/CD pipelines and modern development practicesA passion for building clean, high-performance user interfacesDesirable CriteriaExperience with WebGL or similar graphics and visualisation librariesA background in cloud-native or security-focused productsFamiliarity with modern frontend tooling and frameworksExperience working with design systems and responsive UIWhy This Role Stands OutJoin a $3 billion+ unicorn during a major growth phase, with 50+ hires planned in Belfast this yearBe part of a brand-new UI team, and help set its direction from day oneWork alongside one of the most talented tech teams in BelfastWork on a genuinely innovative cloud security platformGet exposure to advanced technologies including eBPF and real-time threat detectionA strong engineering culture with real technical ownershipThe opportunity to influence both product direction and technical architectureBenefitsCompetitive salary (dependent on experience)25 days’ annual leave plus statutory holidaysEquity and share optionsHybrid working model, with 3 days per week in the officeA high-impact, fast-growing company with clear progression opportunities