Senior UI Engineer

The role

You will own and evolve the Mollie UI design system and improve mobile navigation architecture. You will work across the frontend, backend and infrastructure to drive engagement and accessibility.

What you will do

• Own and evolve the Mollie UI design system for web and mobile
• Rebuild and improve the mobile navigation architecture
• Improve app accessibility in line with compliance standards
• Strengthen testing practices and automation
• Own the Upsell infrastructure and in-app messaging

Required qualifications

• 5 or more years of experience developing mobile apps and web applications
• Solid hands-on React and/or React Native experience
• Deep understanding of JavaScript fundamentals at a low level
• Experience with CI/CD pipelines and app release processes
• Comfort working with native browser APIs and language primitives
• CSS confidence to implement interfaces using design system components
• Track record of building or maintaining products at medium to large scale
• Experience with test-driven development
• Experience with REST API design
• Product-first mindset with end-to-end ownership
• Generalist mindset
• Strong communication skill

Benefits

• Regular feedback and performance reviews
• Fair and transparent salary reviews

Before you apply

• Apply with your CV in English

About the company

Mollie makes payments and money management effortless for businesses in Europe. The company has over 950 employees across more than 14 locations.