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Senior Back End Engineer (Java)
Key Responsibilities
API & Microservices Orchestration
API & Microservices Orchestration
- Design and build Java‑based microservices that securely mediate between Bank's core banking engine and the external partner ecosystem.
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Implement resilient, scalable APIs with clear service boundaries and observability.
- Develop proprietary fintech logic for Beyond Banking transactions, including:
- Travel bookings
- eSIM provisioning
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E‑commerce and marketplace purchases
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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.
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Handle failures, retries, and service degradation gracefully.
- Implement advanced authentication and authorization using OAuth2, OpenID Connect, and token‑based security models.
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Protect sensitive customer data across all third‑party interactions.
- Ensure full ACID compliance across all Beyond Banking transactions.
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Handle complex edge cases such as partial fulfillment, refunds, reversals, and reconciliation between financial and non‑financial systems.
- Bank‑grade reliability: No compromise on correctness or integrity.
- Scalable integration: One platform, many partners.
- Security‑by‑default: Zero‑trust partner interactions.
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Observability & resilience: Designed for failure, built for recovery.
- 7–10 years backend experience, with strong Java and microservices expertise
- Experience working on payments, transactional systems, or fintech platforms
- Strong understanding of distributed systems, databases, and consistency models
- Experience integrating with third‑party service providers
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Strong engineering rigor and ownership mindset
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