Open for contracts remote · worldwide
Tykhon
Kozachenko.
Full-stack QA engineer. I own quality end to end — the manual pass, the automation, the pipeline it runs in, and the evals that keep your AI features honest.
Tykhon Kozachenko
QA · Automation · AI Testing
I'm the QA engineer teams bring in when a release has to be trustworthy. From the first manual pass to a cloud CI pipeline to the evals that keep your AI features honest, I cover the whole quality stack so your team can ship without flinching.
One person, the whole quality stack. Available for remote contracts worldwide.
Everything, one room at a time
Pick where to go next.
Services
One contractor, the full quality stack. Automation that survives, release gates, cloud runners, strategy, and the exploratory passes scripts always miss.
AI & LLM testing
Anyone can wire an LLM into a product in a weekend. I build the evaluation layer that proves it stays accurate, safe and on-brand under real traffic.
Case studies
Three things I got hired to fix — and what they look like now.
Portfolio
Thirteen open-source repositories. Every one runnable, every one green in CI.
Stack
Languages, frameworks, pipelines, cloud — the whole toolbox.
Certifications
Two Anthropic courses on the Claude API and MCP, Postman’s API certification, and where my QA career started.
Engagement & ethos
Project, retainer or hourly — plus the three habits underneath how I work.
What people say
Engineers, leads and designers I have worked with, on what that is like.
Inbox open
Let's make your next
release boring.
Mail is the fastest way to reach me. Tell me what you are shipping and where it hurts, and I will tell you how I would test it.
Email tykhonkozachenko@gmail.comT.