Lead UI / React Data Visualisation Engineer Location: UK / HybridSalary: Competitive Excellent BenefitsEmployer: Global Technology Organisation Are you a Lead-level UI Engineer with exceptional React and frontend architecture skills?Do you want to design and build visual experiences used by 50,000 global developers every day? This is a standout opportunity for a technically brilliant engineer to join a world-class product organisation. You'll work across multiple products, leading the creation of rich, intuitive data visualisation components - including a high-profile developer homepage central to the experience of tens of thousands of engineers. The RoleAs a Lead UI / React Data Visualisation Engineer, you'll: Take ownership of UI and frontend implementation across several product lines, with a strong focus on React and modern component architecture. Build interactive, high-performance data visualisation experiences using libraries such as D3.js, ECharts, or similar. Develop and evolve the UI for a developer homepage with 50,000 active users, ensuring it is intuitive, responsive, and visually compelling. Set technical standards for UI engineering - component structure, state management, performance optimisation, accessibility, and design systems. Collaborate closely with UX designers, product managers, data engineers, and platform teams. Mentor and guide other engineers while remaining hands-on with coding, reviews, and architectural decisions. About YouYou will thrive in this role if you have: Expert-level React skills, including component architecture, hooks, state management, and performance tuning. Strong UI engineering experience - you care about usability, interaction design, and polished user experience. Deep technical capability in data visualisation libraries (D3.js highly valued). Proven success building responsive, scalable, and robust front-end solutions in complex environments. Experience working across multiple products or platforms simultaneously. An ability to transform complex datasets into intuitive, meaningful visual insights. Confidence to provide technical leadership and contribute to wider front-end strategy. What's on Offer A major impact role shaping a UI used by 50,000 developers globally. The chance to lead architecture and decision-making across multiple products. A supportive, innovative environment with autonomy and room to experiment. Flexible hybrid working and excellent benefits. Clear growth and progression opportunities in a global engineering organisation. Ready to Lead?If you're a highly skilled React/UI engineer with a passion for visual storytelling, product quality, and technical excellence, this is a career-defining role. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be Skills: React visualisation Software Development Life Cycle Benefits: Competitive