When a production SaaS application suffers from 100% database CPU spikes, deadlocked PostgreSQL transactions, memory-leaking Node.js/Python containers, or dropped Stripe/EHR webhooks, you cannot wait weeks for a junior developer to guess at the root cause.
If you need to hire a senior freelance programmer for emergency production debugging and performance rescue, I am Aldian Fazrihady—a principal full stack and cloud systems engineer with 15+ years of production incident response experience.
How I Diagnose and Resolve Production Bottlenecks
- PostgreSQL & ORM Query Forensics: Inspecting `pg_stat_statements`, `EXPLAIN (ANALYZE, BUFFERS)`, lock trees, and Django/SQLAlchemy SQL logs (Logging Django ORM Generated SQL & SQLAlchemy & asyncpg Connection Pool Tuning) to drop 5-second queries under 15ms.
- Concurrency & GIL/Goroutine Bottlenecks: Eliminating Python threading/GIL stalls (Avoiding GIL Bottlenecks in Background Workers) and Go race conditions.
- Dropped Webhook & Queue Recovery: Rebuilding idempotent replay pipelines (Recovering Dropped Payments in Stripe Integrations).