Mohammad Fadhel Hasbullah

Designed and built a high-performance API gateway in Go as a secure proxy for LiteLLM infrastructure, including a prepaid billing engine with USD quota and IDR checkout flow. Owned the full product from landing page to analytics dashboard.

Built and maintained microservices in Go using gRPC and REST, with Kafka for event-driven workflows. Diagnosed a critical database performance issue, reducing latency from 3-5 minutes to under 2 seconds, and refactored legacy services into microservices, cutting infrastructure costs by about 35%.

Built the core backend for a payment service provider licensed by Indonesia's central bank, including transaction logging, audit trails, and operational safeguards. Implemented CI/CD with GitHub Actions and GHCR, cutting deployment lead time by about 80%.

Designed backend APIs for consultation booking flows and end-to-end payment processing with failure recovery and data integrity guarantees. Set up infrastructure including domain configuration, Nginx reverse proxy, SSL, and automated CI/CD.

Implemented OTP-based admin authentication, JWT, and data encryption to meet enterprise security standards. Developed a secure enterprise system for internal sponsorship workflows covering submission, verification, and approval.

Diagnosed a production Redis outage and restored service within 2 hours with zero data loss. Implemented high-availability financial systems with strict ACID compliance and built a Redis caching layer to reduce latency on high-frequency transaction pipelines.

Built scalable APIs for high-concurrency order and delivery workflows for Astro, Indonesia's quick-commerce platform. Maintained backend services across 4 concurrent client projects using Golang and Java Spring Boot.

Developed backend services in Go for big data and sentiment analysis platforms, gaining early exposure to distributed systems and data-intensive applications.

Earned a Bachelor's Degree in Information Systems from Politeknik STMI Jakarta in 2020.