I'm Gary Sperka, a software engineer living in Chicago. I've helped build web applications that are currently used in a variety of industries.
McMaster‑Carr is a privately held industrial supply company with a massive MRO catalog and 300,000+ daily users. Led development of core customer‑facing features, modernized front‑end infrastructure, and shaped platform‑wide Springboard architecture across web and mobile.
React 19, TypeScript, .NET 8/10, NPM, GitLab CI/CD, Claude Code, LLM‑powered relevance systems
CarmaCare is a subscription car care service that insures vehicles against common maintenance and breakdown problems. Signed on as first company hire.
Phoenix, Elixir, TailwindCSS, Petal Framework, AlpineJS, Git
Purchasing Platform is the Online Marketplace for Procurement that saves money & simplifies purchasing with over 1 Million products & 30% average savings.
Ruby, Rails, Postgres, React, React Query, MobX, Typescript, Docker, Hawksearch, Circle CI, Github
A fully custom-built CMS that integrates Epic Care software to allow patients to schedule online.
PHP, Yii2 Framework, ES6+ JavaScript, Craft CMS, MariaDB, Twig, Docker
All in one stop shop for recruiters.
Handles all stages of candidate life cycle (resume uploads, scheduling interviews, custom feedback, you name it).
.NET Core, Angular 6, JSON Web Tokens, MYSQL, Google Analytics
Custom marketing website where users can read about the latest offerings as well as receive insurance quotes.
WordPress, Salesforce, ES6 JavaScript
