Krishan Jangir

Backend Software Engineer with 5 years of experience designing and delivering enterprise-grade payment and core banking systems. Specialist in Java, Spring Boot, Kubernetes, and AWS, with deep domain expertise in real-time payments, core banking integration, and accounts/settlement processing. Proven track record of integrating multiple banking products into unified platforms handling high transaction volumes.

Seeking a backend engineering role within a UK-based bank, fintech, or integration-focused technology company.

Software Engineer at FIS Global (2021-03 – 2026-03)

Designed and delivered enterprise-grade payment and core banking systems for the Malaysian payments ecosystem and integrated multiple core banking platforms.

• Designed and developed key modules for a greenfield real-time payment clearing and settlement platform, enabling inter-bank and intra-bank transactions for the Malaysian payments ecosystem.
• Built RESTful microservices using Java 11+ and Spring Boot, deployed on Kubernetes clusters in AWS, processing high-throughput payment flows with sub-second latency targets.
• Implemented event-driven architectures using Apache Kafka for asynchronous payment processing, ensuring reliable message delivery and fault tolerance across distributed services.
• Collaborated with cross-functional teams including product owners, QA, and infrastructure engineers to deliver incremental releases following Agile/Scrum methodology.
• Integrated a unified payment hub and order management system with multiple core banking and general ledger systems via a suite of REST web services, handling very high daily transaction volumes.
• Implemented OAuth 2.0 authorisation for all CBIS banking service endpoints, strengthening API security posture and enabling fine-grained access control.
• Automated the regression testing suite for the payment UI layer, significantly reducing manual QA effort and improving CI/CD pipeline reliability.
• Conducted code reviews, mentored junior developers, and contributed to architectural decision records for microservices decomposition and API contract design.
• Worked with IBM MQ for legacy system integration and Kafka for modern event streaming, bridging older banking platforms with new cloud-native services.

Bachelor of Technology in Technology – MVJ College of Engineering (2016 – 2020)