Sebastian Seichei-Silaghi

I'm building scalable UI and API automation for Castor, a cloud-based clinical research platform used to manage clinical trials and medical studies.

I define test strategy across critical user journeys, API contracts, data validation, regression risks, cross-browser coverage, and release readiness. I built and maintain automation frameworks with Playwright, TypeScript, JavaScript, and TestCafe, integrating quality gates into GitHub Actions and CircleCI.

I use Claude Code to create reusable QA agents and skills for test design, debugging, refactoring, review, and repeatable testing workflows, while critically validating generated output. My work includes AI-ready QA practices, deterministic and tolerance-based assertions, traceable evidence, and LLM/RAG evaluation concepts.

Across Castor, FinClusive Capital, Ve Interactive, Darwin, and UMT Software, I've led QA strategy, built automation frameworks, validated APIs and backend systems, supported CI/CD, and mentored teams. I bring 14+ years of experience in cloud-based, regulated, data-sensitive, financial, e-commerce, and enterprise products.