Alexey Zaytsev, Developer in Daly City, CA, United States
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Alexey Zaytsev

Verified Expert  in Engineering

Manual QA Developer

Daly City, CA, United States
Toptal Member Since
March 4, 2020

Alexey is a senior QA engineer with ten years of experience in various system platforms and operating systems. He has tested client-server and web-based applications in addition to mobile apps. Alexey has successfully developed test plans, test cases, checklists, and other QA documentation. He has successfully performed different types of testing and immediately reported bugs using various tracking systems. Alexey has experience in automation testing with Selenium WebDriver and Cypress.



Preferred Environment

Team Track, Bugzilla, TestRail, Jira, Android, iOS, Linux, Windows, MacOS

The most amazing...

...I was assigned to work on a project with many missing pieces; I found and combined all these pieces and made this project fully functional.

Work Experience

Senior QA Consultant

2019 - PRESENT
Virtusa at Google
  • Tested new Google features on the search result page.
  • Acted as a feature POC for testing requests, created all testing docs, and assigned tasks to the team members.
  • Manually tested new Google features for desktop and mobile/tablet devices from Jelly Bean to Android 10 and the latest iOS 13.x.
  • Discovered and debugged issues; used the ADB command to install the .apk; and filed bug reports, logs, screencap, screen record, etc.
  • Utilized internal tools to debug automation and manual testing of web server changes.
  • Maintained technical documentation such as test plan, test cases, and checklist. Wrote an operation manual.
Technologies: Google

Senior Software Engineer in Test (Test Lead)

2020 - 2023
  • Performed SaaS and enterprise result management system (ERMS) testing.
  • Tested integrations of third-party apps such as Microsoft Teams, Webex by Cisco, and Slack.
  • Acted as a test lead for three projects, starting from requirements through all testing cycles, supporting weekly releases, and working closely with project managers and developers.
  • Reviewed and tested requirements at an early stage to find gaps and incompleteness and improve UX.
  • Created test plans, user stories, test cases, smoke/regression test suites, and test scripts utilizing TestRail tool.
  • Provided a continuous transparent view of the feature release readiness throughout QA cycles.
  • Reduced release cycles by applying automation in new and legacy feature testing utilizing Cypress.
  • Performed testing using Postman by sending API calls to trigger testing cards and debugging.
  • Performed different types of testing to verify that the product meets all requirements and works perfectly across all major browsers and operating systems, including accessibility testing.
  • Worked closely with the India development/test team to verify hotfixes. Created demos and organized group testing with developers and project managers to identify weak areas and introduce functionality.
Technologies: Cypress, Datadog, Postman

Software Test Engineer

2020 - 2021
  • Tested mobile application across Android devices, which represented an interface to communicate with medical device.
  • Performed testing of WiFi, Bluetooth tethering, and Bluetooth pairing of instruments with the MDApp.
  • Examined how the app communicates with the web admin tool.
  • Tested MDApp and instrument behavior during network interruption and reconnection.
  • Captured packets and tested their data for encryption.
  • Maintained technical documentation such as test design, test protocols, checklist, etc.
  • Discovered an issue debugging, bug reporting, and validation of fixe.
  • Implemented verification of all app functionalities on Android devices.
Technologies: WiFi, Bluetooth

Software QA Engineer

2016 - 2019
World IP at Google
  • Tested a new binary weekly twice to approve or block for public release.
  • Utilized internal tools to debug automation and manual testing of web server changes.
  • Created automation tests utilize the UI internal automation tool for mobile applications.
  • Led two on-going projects. Responsible for project testing lifecycle, e.g. test planning, integrating with internal tools to account for and show testing progress, test case writing/updating, testing verification, and execution.
  • Provided game testing across all Android devices and OS starting from JB up to P, and iOS devices up to 12.x.x, cross browsing game testing across main browsers such as Chrome, FF, UC, Opera, Stock, Safari, etc.
  • Manually tested new Google features for desktop and mobile/tablet devices from Jelly Bean to Pie and the latest iOS 12.x.
  • Discovered and debugged issues; used the ADB command to install the .apk; and filed bug reports, logs, screencap, screen record, etc.
  • Assisted weekly with the on-going process of improvement for test case management, to maximize test coverage.
  • Created and maintained test documentation of processes and testing projects, which reduced onboarding time for new team members.
  • Helped with bug triaging to avoid dups and assigned priority for existing bugs.
  • Tested specific tool for certified entity who can post content on page and how this content displaying on the page.
Technologies: Google

Software QA Engineer

2016 - 2016
Phoenix American Financial Services
  • Successfully performed testing of web-based financial tracking and reporting system (STAR).
  • Tested “New Businesses” and “Investor account maintenance” functionalities of the STAR system.
  • Successfully introduced and implemented the use of test cases and test coverage for the testing processes, covered build acceptance, regression testing and all major functionality of the app.
  • Performed “Shadow” and provided suggestions for the improvement of weak areas.
  • Maintained technical documentation such as test plan, test cases, and checklist. Wrote an operation manual.
  • Oversaw the demo data base, data preparation, data entry, and data validation.
  • Discovered many critical bugs, provided many suggestions for improvement of the app, reported discovered bugs, verified bug fixes by utilizing “SERENA Business Manager,” and provided QA sign off.
Technologies: JavaScript, CSS, HTML

Software QA Engineer

2015 - 2016
  • Worked on short projects, and performed black box testing of mobile application of Public Broadcasting Service, streaming video performance, and mobile application of the music social network.
  • Performed testing on real mobile (Android and iOS) devices.
  • Focused testing on functionality, usability, network, cross-platform testing, and UAT.
  • Successfully designed test plan, checklist, and test cases.
  • Discovered and tracked bugs.
  • Verified static and captured sessions.
  • Verified video streaming with a different internet connection (Wi-Fi (public/home), LTE, 3G).
  • Helped to collect data to support performance evaluation (video streaming).
Technologies: JavaScript, CSS, HTML

Software QA Engineer

2013 - 2014
Declara Inc.
  • Performed black box testing on both web-based and mobile Declara applications.
  • Managed the design and creation of functional, end-to-end tests that covered social, business intelligence, and reporting areas of Declara social learning platform and client applications.
  • Created and ran automated tests for acceptance and regression testing using Cucumber/Ruby.
  • Led test coverage of mobile testing, test plan, TC, and other documentation creation for mobile app, communication with dev. a mobile team in Boise, ID.
  • Tested iOS and Android mobile applications on physical devices. Utilized SDK Tools and ADB. The scope of testing included functionality, GUI, UAT, usability, operating system compatibility, regression, build acceptance, ad-hoc and exploratory testing of the product features across different browsers and OS.
  • Performed localization testing for a specific client.
  • Reported bugs and verified bug fixes by utilizing JIRA and SPIRA-Team.
  • Investigated clients' bugs, debugged issues utilizing dev tools and Kibana.
  • Utilized SQL queries to validated test results against backend data.
Technologies: Ruby, Cucumber, JavaScript, CSS, HTML

Software QA Tester

2012 - 2013
First Class Trip
  • Tested web-based apps that provide information about air tickets, weather, and hotels.
  • Tested process development: create test cases, test matrices, test suites, checklists, etc.
  • Performed functional, BVT, GUI, UAT, usability, cross browsing and operating system compatibility, regression, ad-hoc, and exploratory testing.
  • Developed documentation, created user story, and acceptance criteria.
  • Used virtual machines for compatibility operating systems, browsers, and size screen.
  • Tested mobile version of an application on Android and iOS.
  • Identified, researched, and reported software defects using Bugzilla, the bug tracking system.
Technologies: Bugzilla, JavaScript, CSS, HTML

Software QA Tester Intern

2012 - 2012
  • Worked on multiple short term projects, which have been provided by the agency.
  • Tested web-based software as well as mobile applications/games.
  • Performed ad-hoc, functional, GUI, UAT, and regression testing.
  • Performed cross-browser and cross-platform compatibility testing using VMware virtual machine.
  • Reviewed business requirements and prepared test cases for functional modules.
  • Logged and tracked software defects via Bugzilla.
  • Participated in regular QA team meetings and discussions.
Technologies: Bugzilla, JavaScript, HTML

Applications of Financial Services

I worked on a web-based app (as a database) designed for direct participation investment programs where the investor service department can provide full-service investment administration functions from new investment entry and including daily investment administration (account maintenance, investment allocation, investment distribution, redemption and provide investment reports). When I joined the company I improved QA processes, implemented test cases for test coverage, and started doing shadow to find weak areas. During a couple of shadow sessions, I improved workflow and speed to create new investment.

Social Learning Platform

I worked on an online social learning platform that learns how users interact through the use of semantic search, machine learning, and recommendations to deliver personalized suggestions on potential collaborators and resources for projects. I handled the testing of multiple environments with huge testing coverage in a short period of time for each release.

Search and Suggestions

I worked on a project with many missing pieces, no one did no know where to start from, I went through many meetings with different terms to get all missing pieces. I found and combined all these pieces together during a short time and made this project fully functional. Since then, I led the testing of this project for three years.

Travel Shopping Platform

I have tested an online travel shopping platform for flight and hotel booking, and online reservations for transportation, lodging, travel experiences, weather, and getting useful traveler information about different places. I was the first QA, and I set all the procedures and processes.
2008 - 2008

Courses in Technology and Quality Control

Polytechnic University - St. Petersburg, Russia

1994 - 1999

Bachelor's Degree in Engineering

Technical University - St. Petersburg, Russia


Android Debug Bridge, Jira, TestRail, Bugzilla, Team Track, Cucumber, Postman


Usability Testing, Functional Testing


JavaScript, Ruby, Python 3, HTML, SQL, CSS


iOS, Android, MacOS, Windows, Linux


Android SDK, Cypress




Manual Software Testing, Regression, Test Planning, Test Reporting, Test Cases, Requirement Traceability Matrices, Exploratory Testing, VM, Localization Testing, Google, Bluetooth, WiFi

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