A selection of my best backend and system integration projects.
High-availability Host-to-Host (H2H) banking integration platform for low-latency financial settlement.
Core Technical Challenge
"Maintaining system uptime while integrating with legacy core banking APIs that have unpredictable latency spikes (>2s)."
Implementation Insight
Implemented a robust circuit breaker and retry mechanism using a custom Go middleware to prevent cascading failures.
A high-performance double-entry ledger system designed for consistency in microservices.
"Ensuring strict ACID properties across multiple payment microservices without sacrificing speed."
Utilized Saga Pattern (Choreography) to handle eventual consistency while using Redis for fast idempotency checks.
Streaming data pipeline for detecting fraudulent transactions in real-time.
"Analyzing 50k+ transactions per second with <50ms decision latency."
Optimized Flink state management and used ClickHouse for immediate analytical OLAP response.
High-security digital signature vault and E-Meterai issuance system compliant with PERURI regulations.
"Integrating with legacy government HSM (Hardware Security Modules) with strict PKI protocols."
Built a high-performance Go wrapper over C-bindings for native HSM interaction with 99.9% success rate.
AI-powered classification engine for high-volume banking and insurance documents.
"Maintaining classification accuracy (>95%) while processing varied legacy document formats (OCR/PDF)."
Leveraged Vision Transformers (ViT) and fine-tuned BERT models optimized with ONNX runtime for sub-100ms inference.
Winner of Museum Bahari Jakarta Hackathon. A mobile promotional application that brings history to life.
"Engaging users with non-digital historical artifacts through a mobile experience."
Implemented a real-time event system and location-based triggers using Firebase and Flutter.