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Polina Korobka

@polinakorobka

Senior QA Engineer at ExpoPlatform who built AI-assisted QA workflows that cut manual test-writing time by more than half.

Ukraine

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At ExpoPlatform, I tested AI-driven product features for the Data Science team, including search, ranking, scheduling and recommendations. I built a golden-dataset regression suite and a Postman repository with 165+ tests across 10 features.

I also built AI-assisted QA workflows that cut manual test-writing time by more than half. My custom Claude skill supported requirements gap analysis, test checklists, Postman collection generation and Confluence documentation.

At Devox Software and Blackbird, I started QA processes from scratch, often as the only QA on a project. My experience also includes ERP, payment systems, iGaming, and web and mobile testing.

Experience

Work history, roles, and key accomplishments

Senior QA Engineer

ExpoPlatform

Apr 2026 - Sep 2026 (5 months)

Tested AI-driven product features including search, ranking, scheduling, and recommendation services. Built a golden-dataset regression suite and used SQL to validate algorithm output, while also implementing AI-assisted QA workflows that reduced manual test-writing time by over 50%.

Manual Testing API Testing REST Postman Newman SQL PostgreSQL AI ML Testing LLM Testing Test Planning Test documentation Jira Confluence Claude TestRigor Prompt Engineering Shift Left Testing Regression Testing

Senior QA Engineer

Devox Software

Jan 2024 - Apr 2026 (2 years 3 months)

Worked on multiple projects in parallel, often as the sole QA, and established QA processes from scratch. Tested web applications, APIs, and complex payment logic, and created AI-powered test cases with testRigor.

Manual Testing UI Testing API Testing Postman Swagger TestRigor Test documentation Client Communication Agile

Senior QA Engineer

Proxet

May 2023 - Dec 2023 (7 months)

Tested a large ERP web application in the Azure environment, including backend API testing and financial reports. Also worked as a Business Analyst, creating tickets and clarifying requirements.

Manual Testing API Testing Swagger MySQL ERP Testing Azure Requirements Analysis Test documentation

Senior QA Engineer

Upstars

Mar 2023 - May 2023 (2 months)

Tested iGaming web applications, design mockups, and payment systems, including API and integration testing. Improved QA processes and user flows, and managed test documentation.

Manual Testing API Testing Postman Swagger Integration Testing Payment Systems Test documentation QA process improvement

Middle/Senior QA Engineer

Blackbird

Apr 2019 - Mar 2023 (3 years 11 months)

Sole QA on an ERP system for a large construction company, starting the QA process from scratch. Tested web application, backend APIs, financial reports, and salary calculations, and presented demos to clients.

Manual Testing API Testing Swagger MySQL ERP Testing Requirements Analysis AHA Test documentation Client Communication

Middle QA Engineer

Wildtornado

Aug 2020 - Mar 2021 (7 months)

Tested iGaming web applications, design mockups, and a payment system, improving QA processes and user flows.

Manual Testing API Testing Payment Systems Test documentation QA process improvement

Middle QA Engineer

Eleken

Aug 2018 - Mar 2019 (7 months)

Tested web and mobile products for startups and MVPs, including design testing against Figma. Started QA processes from scratch and improved the QA strategy for the company.

Manual Testing Mobile Testing iOS Android Figma Test documentation QA Process Establishment Mentorship

Junior QA Engineer

Customer Times

Oct 2016 - Aug 2018 (1 year 10 months)

Tested web and mobile applications and Salesforce CRM, and mentored a small QA team. Created test plans, test cases, checklists, traceability matrices, and client reports.

Manual Testing Mobile Testing iOS Android Salesforce Test Planning Test documentation Mentorship