Work history

Investment platform. Django back office by day, and the Go order service rewrite (Zagreus) — layered architecture with a transactional unit-of-work pattern, repositories sharing a single sqlx.Tx for atomic writes and full mockability.

• +Built a Cooperation Agreement management system from scratch — status lifecycle, bulk-reject workflow, signed PDF delivery over email
• +Killed N+1 queries and added composite indexes on transactions — back office noticeably faster
• +Initiated the Zagreus order service rewrite in Go (handler → service → repository, unit-of-work over sqlx.Tx)

Building materials e-commerce. Event-driven backend on Kafka, a 7-microservice system for automated data transfer, and the long march of migrating a Laravel monolith to Go.

• +Re-engineered the manager application from Laravel to Go — infra costs from $25K to $16K/month (~36%)
• +Designed the Kafka pipeline for automated store onboarding — hundreds of stores, thousands of invoices monthly from bulk Excel uploads
• +Implemented OpenSearch as the search database — query times from 5s to <1s
• +Wired the microservices together with gRPC, plus an FTP watchdog triggering DTO processing

Scheduling platform. Designed and built the complete backend — 81 REST endpoints across booking, payment (Midtrans) and user management.

• +Architected a Redis caching layer over MongoDB — API response times from 800ms to 120ms (~85%)
• +Set up the full AWS infrastructure: ECS, ECR, S3, CloudFront, Route 53, Nginx as reverse proxy
• +Engineered CI/CD with GitHub Actions + Docker — ~8-minute pipeline from push to ECS deploy

End-to-end testing for new features on the web app. Finding bugs, reporting them, and automating myself out of the boring parts.

• +Automated internal testing with LambdaTest — 10% reduction in testing time
• +Worked with the dev team to chase down and resolve stability issues

Built and maintained the Forky mobile app in React Native, then helped migrate it to native Android.

• +Migrated Forky from React Native to native Kotlin
• +Shipped features across 5+ cross-functional teams