Performance Tuning

• Directed full‑stack GIS map development, overseeing PostgreSQL, Mapbox, ReactJS, and NodeJS to deliver an integrated solution.
• Overhauled internal processes, saving 8,000 hours by improving software architecture, systems, and scheduling efficiency.
• Enhanced project efficiency, saving 150 hours per month across 30 projects by optimizing workflows and resource management.
• Built the loyalty and reputation system — 67 functions over a 31‑table ledger, with leagues, badges and a redemption shop — taking a row lock on the balance to close the double‑spend window.
• Cut the site's browser‑driven quality gate from 1,636 seconds to 615 by scheduling its checks longest‑first through a worker pool bounded to four lanes, after measuring that alphabetical order cost 320 seconds against 224.
• Adopted Swift 6 complete strict concurrency with no actors, bridging a blocking C event loop to the main actor through one producer, one consumer and one ordering — after establishing that a task per event loses the ordering the interface depends on.
• Took the test suite from six tests over a sixty‑second limit to 135 passing in 8.9 seconds by profiling the main thread and removing the two calls it sat inside for 3,989 samples out of 4,017.

This work is part of what we offer as Technical Leadership & Consulting, Backend & API Development, DevOps & CI/CD Automation, Frontend Development, Platform & Solution Architecture, Project Management (Agile), Database Design & Modeling and Full‑Stack Product Development.

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