Anthony Tecsa

Diagnosed and resolved critical checkout validation errors, securing over 30,000 successful checkouts and $200,000+ GMV.

Reduced average query latency by 42% across 100k+ daily subscription requests by optimizing Rails ActiveRecord performance.

Automated 23% of internal support requests by building a Python FastAPI Slackbot, with ticket classifiction capabilities.

Built a DAG-based workflow engine with FastAPI, Zustand, and Supabase; scaled to 312 weekly runs across 4 businesses.

Shipped realtime WebSocket infrastructure supporting 100+ weekly client sessions and cutting message latency 83%.

Secured onboarding flows for 200+ patrons, enabling user authentication, role-based access, and encrypted API key management.

Raised retrieval accuracy 15% for librarian agent queries with a query-routed RAG pipeline using OpenAI.

Boosted repeat engagement by 36% from 300+ users via a Saved Stories feature built with React + Firebase.

Increased test coverage to 91% through Jest unit tests and Postman integration suites for user and content APIs.