gmyzov.com

Sergey Gmyzov

Senior QA Automation Engineer -> Data Engineering

About

I am an engineer with 12 years in test architecture, automation strategy, and quality systems for web platforms and APIs. My transition to Data Engineering is built on the same principles: reliability, observability, deterministic workflows, and scalable tooling for high-confidence delivery.

Core Expertise

QA Automation

  • Test architecture design across UI, API, and integration layers.
  • CI/CD quality gates with risk-based test orchestration.
  • Framework development with maintainability and execution speed focus.
  • Failure analysis pipelines and quality metrics for release confidence.

Data Engineering

  • ETL/ELT pipeline fundamentals with emphasis on data contracts.
  • Data quality validation, schema evolution, and lineage awareness.
  • SQL-first modeling and transformation design for analytics readiness.
  • Automation mindset applied to reproducible, observable data workflows.