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.

Muse Group

Muse Group empowers music makers. We create the world’s most popular content, apps and platforms for playing, recording and composing music.

Through our expansive music catalogs, educational expertise, innovative learning tools and free open-source software, we make it easier for millions — from beginners to experienced musicians — to be creative every day. 

The Muse community is now over 400 million strong. And we’re just getting started. 

Our future vision is of a world with over a billion music makers — and we have a drive to expand our influence into other creative spaces too.

What do we make?

We make essential resources for all kinds of creatives, from performers to podcasters. Learn more about the leading Muse Group products here.

Who are we?

Muse Group began life as Ultimate Guitar, the largest online global community of musicians. Eugeny Naidenov founded Ultimate Guitar in 1998, with a dream to make it easy for guitarists to play songs by Guns ‘N’ Roses and his other favorite rockers. From there, the site grew from a plucky, tab-sharing trailblazer into a global leader of online music publishing. 

In 2017, Ultimate Guitar acquired MuseScore, expanding its reach into sheet music. Muse Group has only continued to grow from there — and now includes Audacity, StaffPad and many more. 

In 2023, Muse Group acquired Hal Leonard, the legendary global sheet music publishers, adding an unparalleled music catalog and educational expertise to the team.

Today, we are an international, visionary team of creatives, music lovers and audio obsessives, developing products we could not live without.