Senior Software Engineer (Java) - IPP - Platform Scalability

Senior Software Engineer (Java) - In-Person Payments Platform - Platform Scalability

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.

Help us build the best-in-class In-Person Payments Platform

Join our In-Person Payments Platform team as a Java Software Engineer. We're responsible for building a reliable, fast, and scalable backend platform that supports our expanding fleet of POS terminals. This involves scaling existing components and implementing the most suitable technologies to solve challenges.

As an engineer, you will own the entire development cycle, from software design to testing, ensuring seamless production operation. You'll tackle challenges presented by massive scale, leveraging cutting-edge technology to do so.

What we are currently working on:

• Real time communication with millions of devices: The team is responsible for developing a robust and scalable backend infrastructure. This critical infrastructure is designed to handle millions of concurrent connections, facilitating real-time communication for payment processing and configuration delivery to terminals.
• Cloud Terminal/Device API: This vital infrastructure facilitates merchant communications with terminals or mobile payment devices, initiating payments for IPP processing.
• Scalability of IPP Platform: Our proactive approach focuses on identifying and resolving bottlenecks within platform-wide components. We achieve optimal scaling by developing scalable frameworks and utilizing appropriate technologies.

What you will do:

• Write efficient Java code to interact with various distributed databases and optimize performance.
• Collaborate with platform and infrastructure teams to ensure seamless integration and operation of distributed systems.
• Troubleshoot performance bottlenecks and work on mission critical systems to ensure availability in production environments.
• You will be fully responsible from its initial design to bringing new functionality live
• Identify and improve parts of the platform to make it more robust and scalable
• Collaborate across teams and time zones to make things happen, review code and be open to feedback

Who you are:

• Advanced knowledge of Java, with hands-on experience in writing scalable and high-performing code for distributed systems.
• Experience working with distributed data stores like Cassandra, Redis or similar technologies.
• Experience with streaming technologies (e.g., Kafka, RabbitMQ) is required.
• You are comfortable with CI/CD pipelines (e.g., Jenkins, GitLab CI) and monitoring tools (e.g., Prometheus, Grafana, Kibana).
• You demonstrate excellent collaboration and communication skills, thriving in a team-oriented environment.
• You are a proactive problem solver, willing to take ownership of challenges. A team player with a strong desire to learn and improve continuously.
• Participate in an office hours on-call rotation once a month, responding to and resolving urgent issues to maintain system stability and minimize downtime.
• Nice to have, experience with public cloud providers

Why Our Team:

• High Impact: Your work directly on one of the most critical components in the payment flow i.e. gateway to the millions of IPP Payments.
• Complex Challenges: Solve one of the most interesting problems the organization offers i.e. building/scaling backend platform for our ever-growing POS terminals real time communication engine.
• Growth: Opportunity to work on the core payment flow of Adyen and set new technical standards.
• Cross Team Collaboration: This team allows you to identify the scalability needs of Platform and dealing with those challenges.
• Cutting Edge Technologies & Learning:This would frequently involve introducing and implementing new technology to overcome challenges.

This role is based out of our Amsterdam office. We are an office-first company and value in-person collaboration; we do not offer remote-only roles.

Our engineers are building the first financial technology platform that combines payments, data, and financial services. We’re looking for more talented problem solvers to help us address a unique set of challenges.