Юлія

Yuliia Karpenko
QA Engineer

Location: Kyiv, Ukraine
Phone number: [open contact info](look above in the "contact info" section)
e-mail: [open contact info](look above in the "contact info" section)
LinkedIn

Summary
QA Engineer with 4+ years of experience testing complex web and backend systems,
including AI-driven solutions. Strong expertise in manual testing, API validation (REST,
GraphQL), SQL data testing, and exploratory testing in high-load environments. Actively
developing UI test automation skills with Playwright (TypeScript), including CI/CD
integration. Focused on improving test coverage, ensuring stable releases, and validating
non-deterministic system behavior. Experienced working within Agile (Scrum) enterprise
teams.

Key Achievements
Detected critical defects in high-load production system, preventing potential
service outages
Improved test coverage through API validation and structured test design
Contributed to stable releases across multiple release cycles in production
environment
ISTQB Certified QA Engineer
Skills
QA Practices: Functional and non-functional validation of web and backend systems,
covering regression and smoke scenarios, cross-browser and responsive behavior
API & Backend: REST and GraphQL API testing, Postman, Swagger, API contract and
request/response validation, VS Code
Data: SQL (PostgreSQL, MS SQL), data integrity verification and business logic validation
AI Systems: Validation of OCR invoice extraction and recommendation engines, non-
deterministic output analysis and data quality checks
Automation: Playwright (TypeScript), UI smoke and regression automation using AI-
assisted tools (Copilot)
Process & Tools: Agile (Scrum), Azure DevOps, Jira, browser DevTools
Professional Experience
QA Engineer - Tieto, October 2021- Present
Project: office process management, recommendation engines, business time
management, business trips management, invoicing.

Responsibilities:
Designed, maintained, and reviewed test documentation in Azure DevOps,
including test cases, checklists, regression and smoke suites, and bug reports

Validated AI-driven OCR invoice extraction and recommendation systems, focusing
on accuracy, data quality, and nondeterministic behavior
Performed functional and non-functional validation of web and backend systems
across regression, smoke, and cross-browser scenarios to support release
readiness
Conducted REST and GraphQL API testing, including API contract,
request/response, and edge-case validation using VS Code, Swagger, and
Postman
Validated data integrity and business logic in MS SQL and PostgreSQL databases
Developed and maintained UI smoke and regression automation using Playwright
(TypeScript) with AI-assisted tools (Copilot)
Collaborated with developers and business analysts to clarify requirements,
reproduce defects, and improve test coverage in an Agile (Scrum) environment
Head of PCR/IFA Analysis Laboratory - PJSC MHP Laboratory Center, January
2013 - October 2021
Responsibilities:
Conducted laboratory testing using PCR, ELISA, and automated analyzers,
including nucleic acid isolation, amplification, sample preparation, and biomaterial
processing in accordance with approved methodologies
Prepared reagents, test systems, and laboratory equipment; performed technical
validation, quality control, and non-conformity analysis to ensure accuracy and
compliance with quality standards
Analyzed and interpreted research results, confirmed findings, prepared research
and quality protocols, maintained laboratory documentation, and entered data into
specialized software systems
Participated in method validation activities and managed inventory records for
reagents, test systems, and laboratory consumables
Veterinary doctor and sanitary expert - State Scientific Research Institute of
Laboratory Diagnostics and Veterinary and Sanitary Expertise, May 2010 - January
2013
Responsibilities:
Veterinary and sanitary supervision and control of food products and control
compliance with veterinary and sanitary requirements in industries related to animal
husbandry and animal products
Conducting laboratory tests
Conducting Radiological Studies
Keeping records and ordering reagents and consumables for conducting studies
Certifications
Test Design Training, 2024
ISTQB Foundation Level (CTFL), 2023
Education
QALight Testing, 2021
National University of Life and Environmental Sciences of Ukraine
bachelor’s degree, Veterinary Medicine, September 2003 - February 2009

Trainings
Playwright JS/TS Automation Testing from Scratch & Framework, Udemy, 2026
Learn Playwright with TypeScript (Web & API Testing), Udemy, 2026
Generative AI for Beginners, Udemy, 2026
Test design techniques (practical training), Certified Unicorns, 2024
Basic module of testing, QALight, 2021