HEADLINE: Job Title: Software Engineer, Frontend Reporting to: Engineering Manager Location: Remote initially, with plans to transition to hybrid working as we expand in the region. ABOUT THE ROLE: APEXX is pioneering payment orchestration, transforming the general payments landscape with cutting-edge technology and innovation. As a leader in Fintech, we're committed to excellence, driving forward-thinking solutions that empower businesses worldwide.

We're looking for a Frontend Engineer to build and evolve the customer-facing surfaces of our payments platform. Your work will span lightweight, embeddable JavaScript SDKs and payment components used within merchant checkout experiences, as well as sophisticated web applications that enable enterprise customers to understand, configure, and manage their payments.

This is a hands-on engineering role combining deep frontend expertise with exceptional attention to performance, accessibility, and visual craftsmanship. You'll solve demanding engineering challenges ranging from lightweight, resilient checkout components to rich,



data-intensive applications that need to remain fast, intuitive, and responsive while working with complex payment data at scale.

Payments are critical, security-sensitive customer journeys, and the software you build needs to perform reliably and precisely across browsers, devices, and assistive technologies. Whether you're building an embedded checkout component or a complex dashboard, we expect the same high standard of engineering quality and user experience.

WHAT YOU'LL DO:
- Design, build, and maintain robust, lightweight, high-performance JavaScript/TypeScript SDKs and payment components that integrate seamlessly into diverse merchant environments, with rigorous attention to isolation, backwards compatibility, browser behaviour, security, accessibility, and performance.
- Build and evolve sophisticated merchant- and internal-facing web applications, creating polished, responsive, and highly

📌 Frontend Engineer (Barcelona)
🏢 APEXX Global
📍 Barcelona