UI Engineer II

Requirements

• 4 or more years of experience developing mobile apps and web applications, with solid hands-on React and/or React Native experience
• Experience with CI/CD pipelines and app release processes
• Experience with test-driven development and REST API design
• Strong communication skills
• Product-first mindset with end-to-end ownership

What you'll be doing

• Scale the mobile app architecture to support growing user demand
• Accelerate the app release cadence by improving and owning the release process
• Build reusable patterns, tooling, and documentation for mobile app development
• Support debugging and feature delivery for teams across Mollie
• Own and evolve the Mollie UI design system
• Improve app accessibility in line with compliance standards
• Strengthen testing practices and automation for app reliability
• Drive merchant engagement and product activation through Upsell infrastructure

Nice to haves

• A track record of building or maintaining products at medium to large scale
• Native browser APIs and CSS expertise
• Generalist mindset with an "Always Be Shipping" approach

Perks and benefits

• Regular feedback and performance reviews
• Fair and transparent salary reviews
• Opportunities for growth and skill development
• Promotion possibilities and internal hiring