Nick Nick
@nicknick
I build rigorous QA and LLM verification systems for reliable software releases.
ZimbabweWhat I'm looking for
I built CrossCheck AI, a production multi-model LLM verification system that surfaces disagreements, evaluates hallucinations, and preserves unresolved conflicts for users. I integrated five AI providers, created a 25-model registry, and shipped a public beta using Next.js, TypeScript, Supabase, Cloudflare, and Railway.
At EPAM Systems, I tested e-commerce, fintech, healthcare, and retail platforms serving more than 1M customers across 12 European markets. I validated 200+ API endpoints, identified 50+ critical bugs before a loyalty-program launch, and helped deliver zero payment failures and zero critical peak-season defects.
I've also led QA teams and full-cycle testing for healthcare and web projects, building regression suites, UI automation, and cross-browser coverage. I’m available as an independent contractor across US, EU, and APAC time zones.
Experience
Work history, roles, and key accomplishments
Founder & Builder
CrossCheck AI (Platilus LLC)
Jan 2026 - Present (7 months)
Designed and built a multi-model LLM verification pipeline with 5 provider adapters and a 25-model registry. Implemented structured disagreement surfacing and a severity-weighted agreement score, shipping to public beta.
Education
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Nick hasn't added their education
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