Backend Engineer (Java)

This is Adyen

Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. 

For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster.

About the Team

The Payment Gateways team (used to be known as IPP Payments Backend) is a critical pillar of Adyen’s Core Payments solution. The Core Payments group handles the foundational business logic, diverse payment flows, and global features that empower Adyen’s merchants worldwide.

As part of the Payment Gateways team, you will design and build the infrastructure powering Adyen’s in-store payment experience. This means engineering systems capable of handling massive, simultaneous global traffic while maintaining rock-solid reliability for thousands of physical terminals, mobile devices, and merchant hosts.

What You Will Do

As a Backend Engineer (Java), you will orchestrate complex payment flows by integrating multiple Adyen systems and defining the unified architecture for our next-generation payment features.

• Design & Deliver: Build, test, and deploy high-volume, low-latency Java applications that form the backbone of our global payment systems.

• Architect for Scale: Collaborate across Data and Platform engineering teams to design highly resilient, scalable services with reliability at their core.

• Own the Technical Lifecycle: Drive engineering best practices, contribute to scalable architecture designs, and actively participate in product roadmap discussions.

• Data-Driven Optimization: Define, implement, and monitor performance KPIs to proactively identify and eliminate system bottlenecks.

• Collaborate Globally: Partner cross-functionally with global product managers and engineers, occasionally collaborating directly with merchants to understand how businesses consume your solutions.

Who You Are

• Java Developer: You have 3-9 years of hands-on experience delivering high-impact backend services using Core Java, web services, and SQL/PostgreSQL, with a proven track record of technical leadership and mentoring junior engineers.

• Scalability: High availability, fault tolerance, and low latency aren't afterthoughts for you—they are non-negotiable architectural prerequisites.

• API Expert: You possess a strong understanding of modern API frameworks (such as REST and OpenAPI), alongside best practices for API security and developer experience.

• Curious & Forward-Thinking: You actively evaluate emerging technologies and alternatives, confidently presenting your findings during architectural reviews.

• Collaborative Communicator: You know how to get things done by actively seeking out diverse perspectives and bringing people together to solve complex problems.

• Customer-Centric: You balance deep technical rigor with genuine Customer Empathy, always keeping the end-merchant's business success in mind.

Our Diversity, Equity and Inclusion commitments 

Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No ma