Selected Engineering Work

Building a consumer SaaS as a solo engineer requires balancing fluid mobile-responsive UX, secure tier-gated subscriptions, resilient data pipelines, and production infrastructure on a lean operational budget.

Engineered an end-to-end architecture: React/TypeScript frontend with zero UI bloat, Go REST microservice on Cloud Run, OpenAI integration for personalized wine recommendations based on tasting history, and hardened Stripe webhook lifecycle handlers.

When upstream general ledger dimensions or headcount numbers shifted, unsafely refreshing downstream financial models risked silently breaking custom formulas, invalidating historical reports, and causing data loss.

Designed a multi-stage preview & validation pipeline in the UI. Customers can inspect diffs, preview formula impact, and approve dimensionality migrations with defensive validation safeguards before execution.

Payroll calculation is unforgiving: an hour shift during Daylight Saving Time transition or miscalculating a blended overtime rate across multiple job roles directly affects employee wages and employer legal compliance.

Spearheaded technical development plans defining strict database access patterns, API contracts, and defensive boundary tests. Implemented robust calculation rules in Go and intuitive calculation verification interfaces in React.

The Real Time Adherence widget re-rendered massive DOM trees on every incoming agent status event, creating perceptible UI freezing of over 2 seconds per event and severely degrading supervisor efficiency.

Used React Profiler to pinpoint cascading re-renders, decoupled volatile websocket state from static table layouts, implemented memoization boundaries, and established comprehensive Cypress end-to-end integration tests in Jenkins CI.