Maksim Zaitsev
@maksimzaitsev
I build Web3 test automation that protects critical DeFi user flows.
BelarusWhat I'm looking for
I've built Python-based test automation for a DeFi Web3 startup, covering UI, API, and smart contract interactions across critical user flows. My work achieved 80% test coverage and reduced manual regression testing time sixfold per release cycle.
At FRAKT, I established the first formal QA process for an NFT lending protocol, cutting critical post-release bugs by over 50% within six months. I also proposed 10 UI/UX improvements through exploratory testing, including an onboarding change that reduced support tickets by 15%.
I combine hands-on smart contract and API testing with product-minded QA, including finding a critical smart contract vulnerability before launch. Earlier, at VironIT and Yandex, I delivered mobile testing strategies, API testing, and exploratory, regression, and smoke testing.
Experience
Work history, roles, and key accomplishments
QA Automation Engineer
NDA
Aug 2025 - Present (1 year 1 month)
Architected and built a test automation framework from scratch using Python, Pytest, and Playwright, covering UI, API, and smart contract interactions. Automated regression suite, reducing manual testing time by 6 times per release cycle, and integrated Allure Report for clear test results.
QA Engineer
FRAKT
Aug 2022 - Jul 2025 (2 years 11 months)
Built the company's first formal QA process from the ground up.
Ran exploratory testing that surfaced 10+ UX issues; one onboarding-flow fix reduced support tickets by 15%.
Owned feature quality end-to-end – scoped testing, aligned engineering/product stakeholders, and managed release timelines and change requests.
QA Engineer
VironIT
May 2022 - Aug 2023 (1 year 3 months)
Built a full testing strategy for a client's mobile app, raising test coverage 40% and catching critical bugs before production.
Ran in-depth API testing in Postman, logging 50+ defects, including critical authentication security flaws.
Education
Degrees, certifications, and relevant coursework
Belarusian State Economic University
Bachelor of International Relationships, International Relationships
2017 - 2021
Bachelor of International Relationships degree from Belarusian State Economic University from 2017 to 2021.
Tech stack
Software and tools used professionally
Availability
Location
BelarusAuthorized to work in
Job categories
Skills
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