Work

Production-grade backend systems built with explicit constraints, failure handling, and measurable results. Each project solves real problems at scale.

Real-Time Transaction Processing System

High-throughput payment processing with strong consistency, idempotency, and sub-50ms p99 latency. Implements Outbox pattern for event consistency and immutable audit logging.

JavaSpring BootPostgresKafkaDocker

1K+ TPSSub-50ms p99IdempotencyOutbox Pattern

Scalable Analytics & Reporting Backend

Multi-tenant reporting system with aggressive caching, cursor pagination, and async job processing. Optimized for complex analytical queries with smart cache invalidation.

JavaSpring BootPostgresRedisDocker

Sub-500ms uncachedSub-20ms cachedCursor pagination

Real-Time Trust & Risk Scoring Platform

Real-time user behavior scoring with cache-first hot paths, Kafka ingestion, and comprehensive failure handling including rate limiting, circuit breakers, and bulkheads.

JavaSpring BootRedisPostgresDocker

Cache-first designRate limitingCircuit breakersBulkheads