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DANYLO SYDORENKO
QA Engineer | Manual & Automation Testing
Italy | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
QA Engineer with 6 years of experience testing web and mobile applications across fintech, cryptocurrency, solar energy, and enterprise
products. Hands-on experience in manual testing, API testing, SQL-based data validation, and UI test automation using
JavaScript/TypeScript and Playwright. Experienced in functional, regression, integration, and end-to-end testing, test design, and defect
investigation, with a focus on product quality and release stability.
TECHNICAL SKILLS
Test Automation: JavaScript/TypeScript, Node.js, Playwright, Page Object Model (POM), Axios
API Testing: REST, Postman, Playwright Request Context, Swagger, cURL; HTTP methods, status codes, headers, JSON
Databases & SQL: PostgreSQL, MySQL; CRUD, JOINs, filtering, sorting, GROUP BY/HAVING, data validation
Mobile Testing: Manual testing on real Android/iOS devices; Appium, ADB, Charles Proxy
CI/CD & Tools: GitLab CI, Git, GitHub, Allure, Jenkins, Jira, TestRail, Confluence, Chrome DevTools
Manual QA & Test Design: Functional, E2E, regression, integration, smoke, exploratory; test cases, checklists, BVA, equivalence
partitioning, decision tables, state transition, pairwise
Methodologies: SDLC, STLC, Agile (Scrum, Kanban), bug lifecycle, defect triage, release verification
PROFESSIONAL EXPERIENCE
General QA Engineer — Epicentr K, Ukraine Nov 2023 – Present
Internal employee application — mobile app and web version
• Built the Playwright (JavaScript/TypeScript) automation framework from scratch using the Page Object Model (POM); chose what to
automate by run frequency, stability, and business criticality, covering critical UI scenarios and API checks.
• Set up CI/CD to run the automated suite on every build; with routine checks automated, the main regression takes about 2 hours.
• Performed functional, regression, and integration testing of mobile and web applications, including manual testing on real Android
and iOS devices; verified data consistency between mobile and web applications.
• Validated API requests and responses, including HTTP status codes, headers, and JSON payloads, to verify backend functionality and
integrations.
• Tested employee credit approval workflows, validating business rules and process logic across key stages, and loyalty program
functionality, including employee discount cards, corporate discounts, and bonus points.
• Wrote test cases and checklists from requirements, reported defects with clear reproduction steps and logs, verified fixes, and took
part in release verification.
General QA Engineer — Ofek Consulting Group Sep 2020 – Oct 2023
Crypto/fintech and solar-energy web products
• Served as the primary QA engineer for Altcoins Hub, a cryptocurrency trading platform, performing functional, end-to-end, and
regression testing.
• Tested a solar energy investment platform, including its internal web application and investor-facing application for monitoring
energy production and sales.
• Cut regression time from 3 days to 1 by starting to automate it: wrote UI tests with Playwright (JavaScript/TypeScript) and API tests
with Postman and Playwright Request Context.
• Used SQL queries, including JOINs and aggregations, to validate application data and prepare test data.
• Investigated defects and network issues using Chrome DevTools, collaborating with developers and product managers to resolve
issues.
• Executed automated tests through Jenkins and GitLab CI and analyzed test results using Allure.
• Created and maintained test documentation, reported defects in Jira, and supported regression testing and release verification.
EDUCATION
Bachelor's Degree, Automation and Integrated Technologies — Taurida National V. I. Vernadsky University | 2021 – 2023
LANGUAGES
Ukrainian — Native | English — Upper-Intermediate | Italian — Upper-Intermediate