Sergei Liakhov | Chapters

I’m a Senior QA Engineer focused on high-load and distributed systems.

My experience spans enterprise SaaS platforms (300+ engineers, 10+ teams, 100K+ DAU) and performance-critical voice automation systems (NLP, LLM, speech synthesis). I specialize in testing strategy, performance engineering, and validating complex microservice architectures, while also designing and developing end-to-end backend test automation frameworks and CI-integrated testing infrastructure in Python/Pytest.

I previously led three development sub-teams (up to 16 engineers) as a Software Engineering Manager, overseeing the full SDLC and optimizing team processes. This leadership experience now strengthens my hands-on QA work, allowing me to approach testing from both technical and system-level perspectives.

I enjoy working on technically complex systems where quality, scalability, and reliability directly impact business outcomes.