The Senior Engineer - Core Product is responsible for developing and maintaining backend services that power the Direct Issuing Platform. This role contributes to building scalable, secure, and high-performance systems that support card issuing, transaction processing, and integrations with payment networks. The engineer will work hands‑on with either Java Spring Boot or .NET technologies and collaborate closely with cross‑functional teams to ensure delivery excellence.

• Develop and maintain backend services and APIs using Java Spring Boot or .NET (C#).
• Contribute to the design and implementation of scalable microservices and backend modules.
• Collaborate with Core Backend Lead, API Lead, and Integration Lead to ensure cohesive platform delivery.
• Ensure backend systems meet performance, reliability, and security benchmarks.
• Write clean, testable, and maintainable code following best practice...