Sergey Kozel

О себе

QA Engineer with 9+ years of experience across Mobile (Android, iOS), Web, backend/API integrations, and release quality. Experienced in end-to-end quality ownership for large-scale mobile product areas at Yandex, covering critical user journeys from test planning and risk assessment through release validation and post-release monitoring. Strong background in regression optimization, Root Cause Analysis, complex defect investigation, and QA process improvement, including scaling testing practices across multiple teams and introducing AIassisted test design.

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