full stack developer for payment platforms

Mollie provides payment and money management products for businesses across Europe. Its Connect tools and APIs enable platforms and marketplaces to offer payments to their merchants.

• Take end-to-end ownership of product development, from shaping ideas through building, testing, and measuring performance in production
• Design, build, and maintain APIs, services, and embedded components across frontend and backend, focusing on Connect activation, payment API exposure, and multi-sub-merchant support
• Build and contribute to large-scale systems that handle high transaction volumes efficiently
• Weigh product trade-offs and decide what to build and how to expose it to partners, working with the Product Manager to shape the self-serve track
• Work across multiple interacting systems while managing context and prioritizing partner and merchant needs
• Challenge ideas and contribute independent opinions

• 5+ Years of professional software engineering experience with genuine full-stack range
• Ability to own features end-to-end across frontend and backend
• Strong frontend skills, including React, React Native, and TypeScript, plus backend capability and experience designing complex backend systems
• Product mindset, curiosity, and comfort making decisions in a complex product space without a fully defined specification
• Experience building embedded components for platform or infrastructure use cases
• Comfort working across multiple interacting systems in a fast-paced, broad-scope environment with shifting context and sometimes ambiguous work
• Ability to weigh options and trade-offs to solve problems

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