Dariia Tuzova, Developer in The Hague, Netherlands
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Dariia Tuzova

Verified Expert  in Engineering

Quality Assurance Developer

The Hague, Netherlands
Toptal Member Since
June 4, 2021

Dariia is a QA engineer with 10+ years of experience. She specializes in functional testing, regression testing, load testing, API testing, and integration testing for web, mobile, and desktop applications. She is focused, detail-oriented, always strives to learn as much as possible, and consistently puts forth dedicated effort no matter how big or small the task.


JavaScript, Functional Testing, API Testing, Performance Testing, Cypress...
Saleboard B.V.
Selenium, Appium, Python, Mobile App Testing, Functional Testing...
VirtualBox, VMware, Antivirus Software, Jira, Team Leadership, Scrum...




Preferred Environment

Jira, Cypress, Visual Studio Code (VS Code), GitKraken, Postman, BlazeMeter, Apache JMeter, BrowserStack, MacOS

The most amazing...

...thing I've done is reduce time for regression testing from 6 hours to 40 minutes by automating test scenarios.

Work Experience

Senior QA Engineer

2018 - PRESENT
  • Performed manual functional tests to verify the delivered functionality.
  • Automated a time-consuming manual regression test suite using Cypress.io in JavaScript.
  • Created automated tests for APIs that the software provides using Postman.
  • Created performance test scripts using Apache JMeter and BlazeMeter.
  • Created BDD scenarios in Gherkin for features during the story refinement sessions.
  • Worked directly with various CMS systems such as Sitecore, Episerver, and AEM.
Technologies: JavaScript, Functional Testing, API Testing, Performance Testing, Cypress, Postman, Apache JMeter, BlazeMeter, Behavior-driven Development (BDD), Gherkin, Manual Testing, Scrum, Quality Assurance (QA), Android, iOS, Jira

QA Engineer

2014 - 2018
Saleboard B.V.
  • Performed functional and performance testing of web and tablet (Android and iOS platforms) applications.
  • Created automated scripts in Python based on Page Object Model (POM) using Selenium framework for the web app and Appium for Android and iOS.
  • Created a testing approach and necessary test documentation, including test reports and bug reports.
Technologies: Selenium, Appium, Python, Mobile App Testing, Functional Testing, Performance Testing, iOS, Android, Manual QA, Scrum, Quality Assurance (QA), Manual Testing, Jira

QA Lead

2013 - 2014
  • Managed and guided a team of three testers: shared knowledge and onboarded new team members.
  • Trained team members to improve their understanding of various projects and testing techniques.
  • Created, planned, and dispensed testing tasks among my team members using Jira.
  • Tested the software for antivirus compatibility using the 15 most popular antivirus applications.
  • Verified the application's functional requirements on different operating systems using virtualization software such as VirtualBox and VMWare.
Technologies: VirtualBox, VMware, Antivirus Software, Jira, Team Leadership, Scrum, Quality Assurance (QA), Manual QA, Manual Testing

Middle QA Engineer

2012 - 2013
TEAM International
  • Performed manual functional testing for the web application.
  • Reported and managed defects in Mantis and TestTrack Pro tracker.
  • Wrote SQL queries on SQL server tables in order to validate data.
  • Performed manual regression testing and smoke testing over web browsers before every release.
  • Created test cases, checklists, and test reports that were attached to every verified issue.
Technologies: Mantis Bug Tracker, SQL, Functional Testing, Regression Testing, Smoke Testing, TestTrack Pro, Test Case Creation, Test Reporting, Scrum, Quality Assurance (QA), Manual QA, Manual Testing

Junior QA Engineer

2010 - 2012
EnTechEco, Ltd.
  • Performed manual functional, regression, and integration testing for the desktop application that was used for financial and economic enterprise management.
  • Wrote SQL statements to retrieve data from the back end in order to confirm the validity of the reports and data displayed via the application interface.
  • Created bugs found during testing or reported by clients using Rational ClearQuest bug tracker.
  • Provided customer support for our clients by replying to emails and phone calls.
Technologies: SQL, Functional Testing, IBM Rational ClearQuest, Regression Testing, Integration Testing, Quality Assurance (QA), Manual QA, Manual Testing

Action.com–Dutch Stores

At Action.com, my goal was to push the project towards continuous delivery. To achieve this, I proposed that we speed up and automate already existing quality assurance measures. I translated our functional regression test suite into Gerkin scenarios and automated them using Cypress. We attached these tests to our CI/CD pipeline.

In order to extend confidence in the quality of features that we delivered, I extended our pipeline with API tests written in Postman and performance tests written with JMeter. These measures allowed developers to have quick feedback on the code they commit. Moreover, regression tests are not time-consuming anymore.

QA Lead

I've helped build a QA process from scratch and developed a QA strategy to speed up releases. Together with a team, we set up CI/CD and created automated regression and API tests. All these precautions let us confidently deliver high-quality software to our end users.
2005 - 2010

Master's Degree in Applied Mathematics

V. N. Karazin Kharkiv National University - Kharkiv, Ukraine


Certified Tester Foundation Level, Cert. Number 13-CTFL-36709-ES



Apache JMeter, Postman, BrowserStack, VirtualBox, VMware, Jira, Mantis Bug Tracker, IBM Rational ClearQuest, TestTrack Pro


Testing, Functional Testing, Manual Testing, Scrum, Test Automation, Behavior-driven Development (BDD)


Regex, JavaScript, Python, SQL, Gherkin


Android, iOS, Visual Studio Code (VS Code), MacOS


Cypress, Selenium, Appium


Test Management, BlazeMeter, Quality Assurance (QA), Manual QA, Performance Testing, GitKraken, Antivirus Software, API Testing, Mobile App Testing, Team Leadership, Regression Testing, Integration Testing, Smoke Testing, Test Case Creation, Test Reporting

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