Lead Front End Engineer

MCS Group is partnering with an ambitious Belfast-based AI software company that is building enterprise-grade products used in highly secure and complex environments. Following significant growth, they’ve created a brand-new Lead Front End Engineer position. This is a unique opportunity for an experienced Front-End Developer to take ownership of the front-end experience across an entire suite of products, helping shape how users interact with cutting-edge AI technology. This role sits at the intersection of engineering and design. You’ll work closely with product, design and engineering teams to build and evolve a shared design system, ensuring consistency, accessibility and exceptional user experiences across multiple applications. If you’re passionate about React, TypeScript and creating polished, high-quality interfaces, this is a chance to have a visible impact across an entire product ecosystem. What You’ll Be Doing

• Leading the development and evolution of a shared component library used across multiple products
• Building accessible, production-ready React components with a strong focus on quality and consistency
• Working closely with designers to translate Storybook specifications into scalable front-end solutions
• Driving adoption of the design system across engineering teams
• Owning visual consistency across applications, from individual components through to larger UI patterns
• Implementing and maintaining design tokens, accessibility standards and visual regression testing
• Mentoring engineers and championing front-end best practices across the business
• Acting as the key bridge between design and engineering

• 5+ years’ experience in Front End Engineering
• Strong commercial experience with React and TypeScript
• Experience building and maintaining component libraries or design systems at scale
• Deep understanding of modern front-end architecture and component-based development
• Strong knowledge of accessibility standards and best practices
• Ability to collaborate closely with designers and translate design intent into high-quality user experiences
• Excellent communication and stakeholder management skills

• Up to £90,000 with a benefits package which includes enhanced annual leave and share options.