Сергій

Serhii Leskiv
QA Engineer | Manual & Automation (Cypress, API, CI/CD)
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація») Lviv region, Ukraine

19.08.1997

Profile
QA Engineer with 4+ years of experience in manual and automation testing of complex web platforms and
dashboards. Skilled in Cypress, API testing, and CI/CD integration. Strong analytical mindset and attention
to detail, with a background in frontend development. Driven by continuous improvement and building high-
quality, scalable testing processes that enhance product reliability and user experience.

Professional Experience
02/2022 – Present WMT Digital
Remote QA Engineer (Manual & Automation)
• Conduct manual and automated testing of large-scale sports web platforms and
dashboards (Auburn, Stanford, Arizona, SDSU, ODU, Virginia Tech, and others).
• Develop and maintain Cypress E2E test suites with dynamic selectors and API
interception.
• Perform regression, functional, and cross-browser testing across multiple
environments (QA-2, QA-3, staging, production).
• Collaborate with developers, designers, and PMs to ensure smooth releases and
bug-free UI/UX performance.
• Execute API testing via Postman and Swagger; validate integrations and data
accuracy.
• Work with DevTools, Charles Proxy, and Fiddler for debugging, request tracking,
and performance analysis.
• Actively contribute to CI/CD process improvement and maintain test stability in
GitHub Actions and Jenkins pipelines.
• Provide detailed bug reports and test documentation in Jira and TestRail.
Achieved over 30% regression time reduction by implementing structured Cypress
automation and API validation workflows.

2021 – 2022 Freelance / Upwork
Remote QA Engineer (Manual)
Worked as a freelance QA engineer on early-stage crypto-exchange platform,
performing full-cycle manual testing and QA documentation from scratch.
• Performed manual testing for a cryptocurrency exchange platform developed from
scratch.
• Participated in early project phases, helping to identify requirements and define
QA scope.
• Created detailed test cases, checklists, and bug reports using Jira.
• Conducted functional, regression, and usability testing of user flows, trading
modules, and wallet operations.
• Validated backend functionality and API responses via Postman and browser
DevTools.
• Collaborated with developers and project manager to ensure smooth testing
workflow and timely defect resolution.
 Skills
Testing Tools Testing Types Automation
Cypress, Postman, Swagger, Manual Testing, Regression, Cypress E2E, JavaScript,
TestRail, Jira, Charles Proxy, Functional, API Testing, Cross- TypeScript, API test automation,
Fiddler, Chrome DevTools browser, Smoke, Exploratory Dynamic selectors, Intercept
testing
CI/CD & DevOps API & Backend Testing
GitHub Actions, Jenkins, Git, REST API, Swagger, Postman Soft Skills
Continuous Integration, Collections, Data validation, Analytical thinking, Attention to
Deployment pipelines JSON schema detail, Communication, Problem-
solving, Team collaboration
Programming / Scripting
JavaScript / TypeScript / Python
(basic)

Languages
Ukrainian English

Education
2014 – 2019 Master’s Degree in Law
Lviv Lviv Polytechnic National University
Graduated with a Master’s Degree in Law, focusing on legal frameworks in IT,
intellectual property, and information security. Developed strong analytical and
documentation skills applicable to QA and software development processes.

Certificates
Cypress Automation Testing Frontend Development — Skill
(Udemy, 2022–2024) Up IT School (2020)
Completed practical course on Completed a comprehensive
E2E automation testing using frontend development course
Cypress framework. Covered covering HTML, CSS, JavaScript,
dynamic selectors, API and basic frameworks.
interception, and CI/CD Gained a solid understanding of
integration. web application structure,
responsive design, and browser
debugging — skills that help
improve testing efficiency and
communication with developers.