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Work experience

QA Lead

from 03.2023 to now (3 years 6 months)
Shelterzoom, Київ (IT)

*Responsibilities:**

- Own QA strategy across the full product lifecycle: requirements analysis, test design, release sign-off, and post-release monitoring
- Execute hands-on testing across web, API, and AI response layers; maintain and extend Playwright E2E automation covering key user flows
- Lead and mentor a 7-person QA team; partner with dev on unit test coverage strategy and ownership boundaries
- Author technical investigations on testing strategy, tooling candidates, and AI agent architecture

**Key Achievements:**

**AI Cost Optimization**

- 129× token reduction (7.17M → 55.6K tokens/run) — diagnosed MCP tool overuse; enforced playwright-cli bash commands
- 70–80% further reduction by switching Opus → Haiku (5× cheaper/token)
- A/B experiment (JSON Model vs Pure Snapshots) with data-backed scalability crossover recommendations

**Agentic QA System**

- Built Claude Code pipeline: orchestrator, AI bug reporter, Jira integration, test case generator, Playwright runner — full autonomous QA coverage

**QA Process**

- Cross-platform DRM validation (Outlook, Gmail, iOS, Android) for enterprise clients in financial, legal, and real estate
- Root cause analysis per production/staging escape — each missed defect traced to a coverage gap, suite tightened iteratively
- Combined automation + exploratory regression process — shorter release cycle, maintained coverage depth

QA engineer

from 06.2021 to 02.2023 (1 year 9 months)
Geniusee, Київ (IT)

- Owned test documentation: strategy, test plans, cases, checklists, and bug reports
- Executed regression, integration, and E2E test cycles
- Tested third-party integrations: Stripe, Plaid, customer.io, Pusher
- Delivered cross-platform coverage across web and mobile (iOS / Android)
- Collaborated with dev team on requirements analysis, troubleshooting, and root cause investigations

Additional education and certificates

ISTQB Certified Tester — Foundation Level

2022, 2 місяці

Language proficiencies

English — fluent

Additional information

CONTACTS
Location : Kyiv, Ukraine
Phone: [open contact info](look above in the "contact info" section) (Telegram, Viber)
Email: [open contact info](look above in the "contact info" section)
Social network: Linkedin