Senior Backend Engineer - PayLink

About the Role
You will design and build payment-critical backend services end-to-end on a modern Java stack, with a high bar for correctness, reliability, and security.

What You'll Do

• Design and build payment-critical backend services and APIs on Java/Spring Boot.
• Ensure correctness and reliability under load.
• Build robust integrations and event-driven flows.
• Write thorough tests and help maintain high engineering standards.
• Mentor mid-level engineers.

Requirements

• 5+ years in Java backend with Spring Boot.
• Hands-on payments/fintech experience is required — you have worked on real payment or financial-transaction systems.
• Hands-on experience with at least one payment processor or gateway (e.g., MPGS, Cybersource, or mada). This is a requirement for this role.
• Strong microservices and REST API design; relational databases.
• Solid grasp of transactional integrity and reliability.
• Experience with containers/CI/CD and strong automated testing.
• AI-augmented engineering — you actively use AI coding tools such as Claude Code in your day-to-day development. This is a requirement for this role.

Nice to Have

• Experience with more than one payment processor/gateway.
• Familiarity with cloud platforms (OCI, AWS, or Azure); Kafka.