Hybrid UI Engineer II

at Mollie

• Job title: UI Engineer II
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: React, React Native
• Location requirements: Hybrid, Lisbon, Portugal

About the role

• UI Engineer II at Mollie focused on platform solutions enabling fast feature shipping across web and mobile applications. Building strong foundations for scalable development and release workflows.

Responsibilities

• You will be working with us on building and maintaining platform solutions that enable product teams to ship customer-facing features across web and mobile, used by hundreds of thousands of users every month.
• Our focus is on creating strong foundations that improve how features are developed, released, and operated at scale.
• As a UI Engineer, you bridge the gap between platform capabilities and the teams that rely on them, working across the frontend, backend and infrastructure as needed.
• Thinking ahead and designing systems that support growth, faster release cycles, and long-term maintainability will be a key part of your work.

Requirements

• Minimum of 4 years experience with developing mobile apps & web applications.
• Experience with React & React Native.
• Knowledge of language primitives. You should feel comfortable interacting with native APIs built into the browser.
• Experience with test-driven development.
• Experience with creating public or internal REST APIs.
• A knack for creating intuitive and secure user experiences.
• You enjoy being a generalist, working on frontend, backend, as needed to solve problems and delight our users.

Benefits

• Join one of Europe's fastest-growing fintechs and help redefine how businesses manage payments and identity.
• Work from our Lisbon hub with a passionate team of 60+ engineers who love what they do.
• Collaborate across teams and make a direct impact on the scalability of core infrastructure.