[ref. b912122] Java Developer | Once a month RTO - Zigzag

ZigZag is looking for a Java Developer to join our team!

About our client

Our client is a fast-growing fintech company building the next generation of payments solutions. Their Core Services team powers critical backend systems that process high-volume, low-latency transactions securely and reliably. They’re currently looking for skilled Java engineers to help build and enhance the core of their card payment processing systems.

About the Role

As a Java Engineer in the Core team, you’ll work on developing and maintaining the core services responsible for card payment authorisation and processing. You’ll be part of a cross-functional team focused on scalability, security, and performance.

• Design, develop, and maintain Java-based applications.
• Write clean, maintainable, and testable code following best practices.
• Participate in code reviews and ensure code quality.
• Troubleshoot and debug issues in existing software.
• Work on improving performance, scalability, and reliability of our client's services.
• Contribute to the continuous improvement of software development processes.
• Stay up-to-date with the latest Java technologies and best practices.

• Min 5 years of professional experience in backend development with Java.
• Experience building distributed systems and working on high-throughput backend services.
• Strong understanding of microservices architecture and RESTful APIs.
• Solid knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL systems.
• Experience with message brokers (Kafka, EventBridge, etc.) is a plus.
• Familiarity with CI/CD practices and tools (e.g., BuildKite, etc).
• Familiarity with AWS.
• Strong problem-solving skills.
• Ability to work collaboratively in a team.