Welcome to my GitHub profile.
I’m a software engineer with 20+ years of hands-on experience designing and building scalable, secure financial systems, mainly in the banking and payment domain.

My background is strongly rooted in middleware, backend engineering, and system integration, with a focus on high-volume transaction systems, reliability, and clean architecture. I enjoy turning complex financial requirements into robust, production-ready solutions.

• Current Role: Middleware & Architecture at a Bank (Jakarta, Indonesia)
• Experience: Banking & Financial Services Platforms
• Working Style: Hands-on, pragmatic, engineering-driven

• Core Banking Software Engineering
• Middleware & Integration Services
• Microservices Architecture
• Digital Banking Platform Integration
• Loan / Lending Platform Solutions

• ISO 8583 and ISO 20022 Middleware Consultant
• Banking integration advisory (payments & switching)
• SAP S/4HANA Integration

• Java (Spring Boot, Microservices)
• Golang
• Frontend: React, TypeScript, Angular

• AWS
• GCP
• Kubernetes & Docker

• Kafka, RabbitMQ
• PostgreSQL, MongoDB, Redis
• JPA / Hibernate

• OAuth2 / API Security
• JSON, ISO 8583, ISO 20022
• Distributed locking & concurrency handling

• Maven (preferred)

• Built middleware handling JSON ↔ ISO 8583 / ISO 20022 transformations
• Designed for high-throughput and low-latency transaction processing
• Solved race conditions in asynchronous flows using Redis distributed locks

• Designed loan installment logic with fixed monthly payment dates
• Integrated third-party services for credit scoring and validation
• Focused on correctness, auditability, and extensibility

• Developed OAuth2-secured APIs for real-time balance and transaction services
• Integrated external payment gateways (e.g., VISA, Mastercard)
• Emphasized security, traceability, and resilience

• Migrated legacy monolithic systems to microservices architecture
• Improved scalability and fault tolerance
• Tuned Kubernetes deployments for better resource usage and auto-scaling

• Building reliable financial platforms with clean architecture
• Exploring blockchain & DApp development (advisory experience)
• Sharing knowledge through workshops and mentoring junior engineers

💡 This profile focuses on engineering craftsmanship, real-world financial systems, and production-grade architecture.