Senior Back End Engineer (Java)

Key Responsibilities

• Design and build Java-based microservices that securely mediate between Bank's core banking engine and the external partner ecosystem.
• Implement resilient, scalable APIs with clear service boundaries and observability.
• Develop proprietary fintech logic for Beyond Banking transactions, including:
  • Travel bookings
  • eSIM provisioning
  • E‑commerce and marketplace purchases
• Ensure tight linkage with core systems such as digital accounts, payments, loyalty, and settlement layers.
• Architect secure, high‑availability integrations with super‑app orchestrators, travel platforms, fintech aggregators, and service providers.
• Handle failures, retries, and service degradation gracefully.
• Implement advanced authentication and authorization using OAuth2, OpenID Connect, and token‑based security models.
• Protect sensitive customer data across all third‑pa...