Наталія

Nataliia Samusik
SENIOR QA ENGINEER | QA LEAD | WEB, MOBILE & API QUALITY
Rome, Italy | Open to remote EU roles | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») (WhatsApp / Telegram)
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFESSIONAL SUMMARY

Senior QA Engineer with 5+ years of hands-on experience, including QA Lead responsibility for quality across iOS,
Android, web, SaaS, and e-commerce products. Progressed from hands-on testing to release ownership and QA
strategy, coordinating 50+ production releases in one year and building QA processes from scratch. Strong in
risk-based testing, REST and GraphQL API validation, payments, subscriptions, analytics instrumentation, and
production issue investigation. Works closely with Product, Design, and Engineering to identify risks early and
make evidence-based release decisions.

CORE EXPERTISE

Quality leadership: QA strategy, release readiness, risk assessment, regression planning, quality gates, defect
management, mentoring, technical interviews

Testing: Manual testing, functional, exploratory, regression, end-to-end, integration, cross-platform, requirements
analysis, business workflow validation

Platforms and domains: Web, iOS, Android, SaaS, e-commerce, Magento, checkout, payments, subscriptions, order
lifecycle, analytics

API, data and observability: API testing, Postman, REST, GraphQL, SQL, MongoDB, JSON, Datadog, Amplitude, Braze,
AppsFlyer

Tools: Xcode, TestFlight, browser DevTools, Jira, TestRail, Confluence, Git, GitHub, Selenium and Python (foundational)

PROFESSIONAL EXPERIENCE

ODDITY | QA Engineer, promoted to QA Lead | May 2023 - Apr 2026
Product startup | iOS, web, APIs, analytics and e-commerce

• Owned release readiness and quality strategy across iOS and web applications.
• Planned and coordinated weekly production releases, supporting 50+ successful releases in the final year.
• Built QA processes from scratch, introducing structured regression, release validation, risk assessment, and
defect-management workflows.

• Partnered with Product, Design, and Engineering to clarify requirements, surface risks early, define test scope,
and make release recommendations.

• Tested end-to-end customer journeys across UI, REST and GraphQL APIs, backend data, analytics events, and
Magento-based e-commerce flows.

• Validated checkout, payments, subscriptions, and order lifecycle scenarios, including negative paths and
integration failures.

• Verified analytics and lifecycle messaging through Amplitude, Braze, AppsFlyer, Datadog, logs, and JSON
payloads.

• Investigated production issues with engineers, supported root-cause analysis, verified fixes, and monitored
release quality after deployment.

• Contributed to QA hiring through technical interviews and mentoring; supported product adoption by the first
several thousand users.

Freelance QA Engineer | Project-based | 2022 - 2023
• Tested web and mobile products through functional, exploratory, regression, and end-to-end coverage of core
user flows.

• Validated REST and GraphQL APIs in Postman and produced clear test cases, QA documentation, and actionable
bug reports.

• Created foundational UI smoke checks with Selenium and Python.

Nataliia Samusik | Senior QA Engineer Page 1
 KSF Technologies AG | QA Engineer | Oct 2021 - Oct 2022
SecureSafe | Cloud SaaS for secure document storage and password management

• Tested web, iOS, Android, Windows, and macOS applications across functional, regression, exploratory,
integration, and end-to-end scenarios.

• Validated password and file workflows, subscriptions, payments, permissions, and third-party integrations.
• Reviewed requirements to identify edge cases, missing scenarios, and release risks before implementation and
release.

• Used browser DevTools and application logs to investigate defects; maintained regression suites in TestRail and
tracked defects in Jira.

• Performed release validation and worked directly with developers to reproduce issues, verify fixes, and confirm
readiness.

Freelance QA Engineer | Upwork | Mar 2021 - Oct 2021
• Performed manual testing of web applications, covering core user flows through functional and exploratory
testing.

• Documented test scenarios, reported defects with clear reproduction steps, and verified fixes.

SELECTED AI QUALITY PROJECT

Personal AI Assistant | 2026 - Present
• Built and tested a personal AI assistant using Cursor and modern LLMs.
• Designed prompt, exploratory, regression, and edge-case tests for response quality, context handling, and
conversational flows.

• Used AI-assisted workflows for prototyping, debugging, requirements analysis, test design, data generation,
and log/JSON investigation.

EDUCATION & PROFESSIONAL DEVELOPMENT

Lutsk National Technical University | Master's degree, Ecology

Automation Testing with Selenium WebDriver (Python) | QA Light IT School | Nov 2022 - Feb 2023

Manual QA Testing | QA StartUp IT School | Apr 2021 - Aug 2021

LANGUAGES

English - Upper-Intermediate (B2) | Ukrainian - Native | Italian - A2, actively improving | Russian - Fluent

Nataliia Samusik | Senior QA Engineer Page 2