Open to SDET & QA Automation roles
I'm an SDET who builds Playwright + TypeScript test automation from scratch, wires it into CI/CD and uses AI to write and maintain tests faster, so defects get caught before your users ever see them.
Mihai Serbanescu · SDET & Test Automation Engineer
What I do
From the first test case to the CI pipeline that guards every release.
Playwright frameworks built from scratch in TypeScript, covering UI and API for complex, React-based web applications.
End-to-end ownership of quality: what to test, how deep, and when. Clear acceptance criteria agreed with product and engineering.
Automated suites that run on every change in GitLab CI/CD and GitHub Actions, with a managed QA environment and test builds.
Going beyond the UI: REST API testing, data integrity checks and root-cause analysis down to the logs.
Load tests that show how the platform behaves under pressure, and accessibility checks that make it usable for everyone.
AI coding agents and Playwright's AI tooling to design, write and maintain tests faster, with every generated line reviewed like production code.
Approach
Four steps from "we test it by hand" to a suite that runs on every change.
Map the core user workflows, the risky areas and what is still tested by hand. Agree acceptance criteria with product and engineering.
Start with a pilot on the workflows that matter most, then grow it into a scalable Playwright framework with reusable building blocks.
Run the suites in CI/CD on every change, so regressions are blocked before they reach a release, not found after.
Track QA KPIs, report on product health, separate real defects from test-side issues and keep the suite fast and reliable.
Highlights
Real results from real test automation work.
Fintech platform
Built the Playwright (TypeScript) framework from scratch for a React-based financial application used by global investment banks. Features were mostly tested manually before; production defects dropped significantly.
AI in QA
Sped up Playwright test authoring with AI coding agents (Claude Code, ChatGPT, Gemini), Playwright MCP and Playwright's planner, generator and healer test agents.
Certified
ISTQB Certified Tester Foundation Level (CTFL, Syllabus v4.0) and Advanced Level Test Automation Engineering (CTAL-TAE, Syllabus v2.0).
About
How it started
I was running client demos, and things in the system kept breaking at the worst possible moment. I proposed a small automation pilot for the core workflows to the management team. It worked, it was extended, and building and owning the test automation framework became my job.
How I work
In complex trading and fintech workflows I translate between engineering and product experts: structured feedback on usability before release, reproducible bug reports, and support tickets triaged into clear, actionable issues.
Side project
I built an exam-prep platform covering 25+ ISTQB certifications, from Foundation to Expert Level, including AI Testing and Testing with Generative AI. Built almost entirely with agentic AI in Claude Code and live on Cloudflare.
FAQ
SDET, QA Automation Engineer and Test Automation Engineer roles. I'm based in Vienna, Austria (EU citizen) and open to on-site or hybrid work in Vienna, and remote roles across Europe.
Yes, that is exactly what I've done. I introduced automation on a platform that was mostly tested manually, starting with a pilot on the core workflows and growing it into a framework that covers all of them, running in CI/CD.
I use Claude to design test scenarios, edge cases and boundary conditions from user stories and acceptance criteria. I write tests with AI coding agents and Playwright's MCP server and test agents, fix broken locators and analyse failure patterns across CI runs, and generate test data and structured bug reports. Everything AI produces is reviewed like production code.
Yes. Automation covers the repeatable paths; feature, migration and exploratory testing, debugging in DevTools and logs, and clear defect reports are still a core part of the job.
English (C2), Romanian (native) and German (fluent comprehension C1, speaking B1–B2).
Let's talk
Tell me about your product, your team and where quality hurts today. I'll get back to you personally.