Muhammad
Abdullah

$650K+ in projected annual savings for FBBrands Inc. (US enterprise client) via an end-to-end sourcing and costing platform processing vendor quotations from 20+ countries.

98% faster critical pricing API, from 4+ minutes to roughly 5 seconds, through query-plan analysis, indexing, Redis caching, and backend redesign.

95%+ reduction in ETL and reporting runtime, from 5 to 10 hours down to about 20 minutes, with 50% lower memory consumption.

Zero downtime migration across major Spring Boot and Java versions on a multi-brand e-commerce middleware platform, adding multi-tenancy, API versioning, and Redis-based distributed caching.

Full ownership of backend services in FastAPI and PostgreSQL: API design, RBAC, Microsoft SSO, and automated synchronization. AWS production via GitHub Actions CI/CD, Docker, and logistics integrations with DHL, FedEx, and PBI.

Millions of users supported on a global card transaction platform with strict uptime, consistency, and latency requirements.

Sub-100ms response times maintained across mission-critical financial transaction services in a distributed, high-throughput environment.

40% fewer regression defects after writing 200+ JUnit tests and refactoring legacy Java services, backed by SQL optimization, indexing, and schema refactoring.