Energy / utility markets/Full-Stack Engineer

Multi-Region Revenue-Quoting Tool

A sales revenue estimator rebuilt as a React SPA over a pure-TypeScript calculation engine covering 8 ISO regions.

Rebuilt a sales revenue estimator as a React SPA backed by a pure, framework-agnostic TypeScript calculation engine covering 8 ISO regions and roughly 26 programs.

Enforced a strict 'every revenue calculation has a dollar test' parity discipline locked to golden fixtures, and shipped a zip→ISO/zone lookup over 19,175 ZIP codes.

8 ISO regions / ~26 programs modeled
Per-calculation dollar-value parity tests against golden fixtures
19,175-ZIP → ISO / zone lookup