I'm a QA Engineer and UX researcher with over 8 years of experience, mostly in B2B SaaS, e-commerce, and developer tools. I've always worked across the full quality spectrum — exploratory testing, automation, CI/CD integration — but what I enjoy most is working close to the product and the user, catching issues before they reach real people. I combine quality engineering with user research methods — things like using heuristic evaluations or even direct customer interviews to validate solutions, not just verify technical correctness. Understanding why users struggle with something, not just that they do. I think quality and UX are two sides of the same coin — a product can pass every test and still frustrate users. I tend to work with a bias for action — I'd rather raise a concern early and be wrong than stay quiet and let a risk reach production. I make decisions I can stand behind.

Masha Kozhyna

I'm a QA Engineer and UX researcher with over 8 years of experience, mostly in B2B SaaS, e-commerce, and developer tools. I've always worked across the full quality spectrum — exploratory testing, automation, CI/CD integration — but what I enjoy most is working close to the product and the user, catching issues before they reach real people. I combine quality engineering with user research methods — things like using heuristic evaluations or even direct customer interviews to validate solutions, not just verify technical correctness. Understanding why users struggle with something, not just that they do. I think quality and UX are two sides of the same coin — a product can pass every test and still frustrate users. I tend to work with a bias for action — I'd rather raise a concern early and be wrong than stay quiet and let a risk reach production. I make decisions I can stand behind.

Available to hire

I’m a QA Engineer and UX researcher with over 8 years of experience, mostly in B2B SaaS, e-commerce, and developer tools. I’ve always worked across the full quality spectrum — exploratory testing, automation, CI/CD integration — but what I enjoy most is working close to the product and the user, catching issues before they reach real people.

I combine quality engineering with user research methods — things like using heuristic evaluations or even direct customer interviews to validate solutions, not just verify technical correctness. Understanding why users struggle with something, not just that they do.
I think quality and UX are two sides of the same coin — a product can pass every test and still frustrate users.

I tend to work with a bias for action — I’d rather raise a concern early and be wrong than stay quiet and let a risk reach production. I make decisions I can stand behind.

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Experience Level

Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate

Language

English
Fluent
Spanish; Castilian
Advanced
Russian
Fluent
Ukrainian
Advanced

Work Experience

Senior Specialist at MongoDB
January 1, 2024 - Present
Created content for the integrations and managed QA projects.
QA Automation Engineer at AboutYou - E-Commerce platform
January 1, 2024 - July 14, 2025
Collaborated with design team for improving the features, managed QA projects, conducted AB testing, and created automation framework for Frontend and Backend.
QA Automation Engineer at Rakuten TV - Video On-Demand platform
January 1, 2022 - July 14, 2025
Managed QA projects, collaborated with design team for improving the features, and designed automation framework for FrontEnd and Backend.
QA Automation Engineer at Zeiss - scanning electron microscopes
January 1, 2020 - July 14, 2025
Managed QA projects and developed automation framework for Frontend and Backend.
QA Automation Engineer at JustEat - food delivery app
January 1, 2019 - July 14, 2025
Collaborated with product owners and designers to improve quality and managed QA projects.
Independent Product Quality & UX Research Consultant at Freelance
November 27, 2025 - Present
Pre-Launch Validation: Validated pre-launch product solutions by integrating automated testing frameworks with rigorous heuristic evaluations, successfully identifying and resolving both technical defects and user experience friction points before production deployment. AI Agent Automation: Designed and deployed custom AI agent workflows to automate repetitive quality assurance testing and user data synthesis, significantly reducing manual overhead. Cloud Platform (AI developer tools): Investigated onboarding friction for a developer-facing SaaS product via surveys (N=94) and interviews (N=6), resulting in a friction-mapping framework adopted by the Customer Success team that drove a 25% increase in feature activation and a 40% reduction in time-to-first-query. PawStay Boutique Hotel: Uncovered a 71% booking drop-off rate by conducting usability testing and technical workflow analysis, leading to stakeholder buy-in and the immediate adoption of workflow recommendations into the Q2 product roadmap. Amazon Kindle: Managed an 8-week international diary study (N=15, 4 countries) to map user retention barriers, providing strategic insights that shifted the product focus toward a unified reading identity, with 80% of users stating they would switch from third-party apps.

Education

Diploma in UX design at UX Design Institute
June 2, 2023 - June 1, 2023
Master in engineering at National Technical University of Ukraine
April 27, 2026 - June 20, 2014
Human-Computer Interaction (HCI) at Georgia Institute of Technology
January 1, 2025 - March 31, 2026

Qualifications

ISTQB QA Automation Engineer
April 14, 2018 - July 14, 2018

Industry Experience

Software & Internet, Consumer Goods, Media & Entertainment, Professional Services

Experience Level

Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate

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