Irfan Mukhlis

I’m a Backend Lead with 7+ years building and operating a multi-tenant SaaS for 30+ US appliance retailers, processing ~$10M/month payment volume and ~4,300 orders per month. I focus on payments infrastructure, production reliability, and pragmatic architecture that scales without guesswork.

I lead a backend team of 3 across architecture, code review, and weekly releases. I owned a database-per-tenant multi-tenancy approach with middleware connection routing and tenant-scoped caching, cutting background-job server CPU/RAM from 90–95% to 5–15% through query optimization, denormalization, and materialized views.

I architected Adyen terminal and online integrations and built payment correctness mechanisms like refund proration and ledger-friendly idempotency. I also implemented production ML serving—an LSTM delivery-time prediction service with online incremental retraining—and delivered Go-based pricing engines for MAP/MSRP/UMRP/PMAP/LRP rules and multi-vendor aggregation.

Earlier, I built the end-to-end order lifecycle and inventory/serial tracking powering 192,000+ orders lifetime and 85+ warehouses. Outside work, I develop phone-as-controller apps in Flutter and Go (including a Google Play launch) to stay sharp on mobile and systems-level engineering.