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Sergey Belousov

@0002972

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Senior QA Engineer: manual rigor plus Playwright automation for web APIs.

Armenia

Message

What I'm looking for

I’m looking for a QA role where I can own end-to-end quality with both manual testing and Playwright/TypeScript automation, validate APIs and event-driven systems deeply.

I’m a Senior QA Engineer with 6+ years of hands-on experience testing web platforms, REST APIs, and database-driven systems. I blend thorough manual testing with test automation in Playwright and TypeScript across end-to-end, API, and integration layers, focusing on regression coverage, defect analysis, and clear, maintainable test documentation.

In my recent work on an AWS-based healthcare billing and payment platform, I designed and executed automated and manual tests for microservices and patient-facing web portals, including API contract/negative cases and deterministic UI flows using the Page Object Model. I also validate event-driven processing end-to-end (queues, retries, DLQ) and troubleshoot production issues via log analysis and code reviews, while collaborating with developers and product owners and mentoring new QA team members.

Experience

Work history, roles, and key accomplishments

Current

Senior QA Engineer

Current

DataArt Solutions

Jan 2021 - Present (5 years 5 months)

Designed and executed end-to-end, API, and integration tests for AWS event-driven patient billing and payment microservices, using Playwright and TypeScript. Built API request/response contract and negative-case tests, authored Page Object Model web tests with request mocking, and validated async queue/processing behavior using correlated logs and downstream data.

Playwright TypeScript REST API Testing Postman Insomnia AWS Lambda Step Functions DynamoDB SQS CI CD

QA Engineer

Luxoft

Jan 2019 - Jan 2021 (2 years)

Established and improved the QA testing process for an insurance workflow integration and a master-data automation system, validating requirements are testable and maintaining regression coverage. Created and maintained test documentation, led risk analysis and task estimation, and localized defects using log analysis while collaborating with PO and DevOps for stakeholder demos.

MS SQL Server SoapUI Test TFS Jira Smoke Testing Regression Testing Integration Testing Biztalk Active Directory

Support Group Specialist

Luxoft

Jan 2015 - Jan 2019 (4 years)

Provided technical support for an employee business travel workflow, guiding end-users through troubleshooting and resolution. Wrote SQL scripts to extract and analyze data from SQL databases and supported issue debugging alongside the project team.

MS SQL Server Jira Log Analysis Debugging Windows Linux