Ivan is available for hire
Hire IvanIvan Cabarkapa
Verified Expert in Engineering
Quality Assurance Developer
Belgrade, Serbia
Toptal member since October 27, 2017
Bio
Ivan is an automation QA engineer with over 17 years of experience in the IT industry across various domains. He has a strong track record of establishing QA processes from the ground up, leading high-performing QA teams, and delivering quality training. Known for his proactive approach, reliability, and positive attitude, Ivan is committed to delivering excellence in software quality and fostering effective team collaboration.
Portfolio
Duolingo, Inc.
Quality Assurance (QA), Mobile App Testing, QA Automation, Manual QA...
Reddit, Inc.
Agile Software Testing, UI Testing, Functional Testing, Test Management...
Fleishers (via Toptal)
Agile Software Testing, Manual QA, Cross-browser Testing, UI Testing...
Experience
- Agile QA - 10 years
- Manual Testing - 10 years
- Agile Software Testing - 7 years
- Mobile App Testing - 7 years
- iOS - 6 years
- Android - 6 years
- QA Leadership - 4 years
- Test Automation - 4 years
Preferred Environment
JUnit, Selenium, Eclipse, Git, MacOS, Windows, Cypress
The most amazing...
...thing I created is a test suite that uses the Selenium Page Object Model to automate functional testing for a white-label web application with 2,500+ domains.
Work Experience
Test Automation Engineer
2025 - 2026
Duolingo, Inc.
- Developed and maintained end-to-end mobile test suites in Mobileboost, consistently achieving high stability across Android and iOS versions.
- Spearheaded a pilot project using Maestro to build a YAML-based testing prototype, aiming to reduce script complexity and maintenance overhead.
- Architected a scalable folder structure for the automation framework, significantly improving codebase maintainability and team collaboration.
- Optimized the QA ecosystem by implementing advanced automation strategies and establishing standardized test naming conventions.
Technologies: Quality Assurance (QA), Mobile App Testing, QA Automation, Manual QA, Artificial Intelligence (AI), TestRail, testmo
Freelance QA Engineer
2020 - 2025
Reddit, Inc.
- Reviewed feature documentation and workflows, identifying potential issues and suggesting improvements.
- Conducted daily feature testing, along with smoke and regression testing, and reported findings.
- Maintained the test plan, regularly updating and expanding it with new sections to ensure comprehensive test coverage.
Technologies: Agile Software Testing, UI Testing, Functional Testing, Test Management, Mobile App Testing, Cypress
QA Engineer
2020 - 2020
Fleishers (via Toptal)
- Created a complete test plan, including a test suite for the entire application, for regression and smoke test purposes.
- Tested all the features in an Agile manner on various devices and platforms and reported issues accordingly.
- Reviewed the product design. Involved with daily activities and communication with the client, including improvement suggestions and validating that all products were imported correctly on the domain.
Technologies: Agile Software Testing, Manual QA, Cross-browser Testing, UI Testing, Functional Testing, Test Management, Cypress
QA Engineer
2019 - 2020
HH Hodlers, Limited (via Toptal)
- Tested the DApp and crypto wallet.
Technologies: Manual Testing, Blockchain, iOS, Cross-browser Testing, UI Testing, Functional Testing, Test Management, Mobile App Testing
QA Engineer
2019 - 2019
911 Memorial and Museum (via Toptal)
- Configured JMeter scripts for load and performance testing.
- Setup on Blazemeter for running scripts and simulating high loads.
- Ran scripts locally using Taurus CLI and JMeter.
- Collected and analyzed test results.
- Manually tested the application and reported issues.
Technologies: API Testing, BlazeMeter, Apache JMeter, Taurus, Cross-browser Testing, UI Testing, Functional Testing, QA Automation
Freelance QA Engineer
2018 - 2019
Sterling Capital Brokers Ltd. (via Toptal)
- Worked in a scrum team and reported daily on the testing progress.
Technologies: Manual Testing, Heroku, Git, TestRail, UI Testing, Functional Testing
Freelance QA Engineer
2018 - 2019
Exhale (via Toptal)
- Configured an automated test suite in Postman Pro to test APIs.
- Worked in a scrum team and reported daily on the testing progress.
- Performed manual testing in multiple environments.
Technologies: Manual Testing, Postman, Cross-browser Testing, UI Testing, Functional Testing, JavaScript
Freelance Senior QA Lead
2017 - 2018
Inpoint (via Toptal)
- Documented features in Confluence for a customer satisfaction application.
- Created a test suite in TestRail and performed manual testing in multiple environments.
- Built an automated test suite to cover the UI.
- Worked in a scrum team and reported daily on the testing progress.
- Reported and verified issues in Jira.
Technologies: Test Automation, Jira, TestRail, Selenium, Java, UI Testing, QA Automation, Test Management, JavaScript, REST APIs
Automation QA Lead
2016 - 2018
Codeplicity
- Worked on a white-label dating project in a Kanban organized work environment.
- Planned and organized all the QA team activities with Jira and Confluence and organized quality training sessions for junior team members.
- Developed and maintained functional tests using Selenium, Java, JUnit, Maven, and Bitbucket/Git.
- Maintained automated test suites in Jenkins CI.
- Configured and maintained automated REST API test suites with SoapUI to ensure the proper functionality of API services.
- Configured the performance testing with JMeter.
Technologies: Test Automation, API Testing, Manual Testing, Apache Maven, JUnit, Java, Selenium, Android, iOS, UI Testing, E2E Testing, QA Automation, Test Management, REST APIs, Mobile App Testing
Testing Engineer | QA Lead
2015 - 2016
Seavus
- Developed an interesting and complex web application project in the gaming and betting industry (BtoBet.com).
- Estimated, prioritized, planned, and coordinated the testing activities in an agile environment.
- Designed, developed, and executed the automation scripts with the Selenium Web Driver (Java, JUnit, Maven, and SVN).
- Worked with tools such as NetBeans, Smart SVN, Jenkins, Jira, and TestLink.
- Identified, reported, documented, and tracked defects.
Technologies: Test Automation, Manual Testing, Apache Maven, JUnit, Java, Selenium, Android, Quality Assurance (QA), QA Testing, Testing, UI Testing, E2E Testing, QA Automation, Test Management, Mobile App Testing
Scrum Master | Senior QA Engineer
2014 - 2015
PSTech
- Incorporated agile and scrum values to the team.
- Reminded the team of their arrangements and helping the team to continuously improve their process.
- Gave feedback to the team through observations from outside of the team.
- Checked all the models the team uses (e.g., a sprint backlog, metrics, and more) and presented differences between the model and the real world.
Technologies: Manual Testing, Cisco, Test Management
Software Engineer | Senior QA Engineer
2012 - 2015
PSTech
- Worked on various projects for Cisco: Cisco VXC-M, Cisco VXC6215, Cisco VXME for Linux, Cisco VXME for Windows.
- Implemented manual tests; including writing the tests, configuring test beds, finding and reporting defects, and monitoring the defect lifecycle.
- Configured and maintained complex network environments for manual testing (Citrix, VMware, AD, DNS, DHCP, and Cisco hardware and software).
- Ensured that the documentation was in order and up to date with the product.
- Organized technical trainings for team members.
Technologies: Manual Testing, Cisco, Quality Assurance (QA), QA Testing, Testing
Technical Support Engineer
2008 - 2012
Telefonija
- Gave presales technical support to the customer—managing and interpreting customer requirements, solution proposals, and bidding.
- Maintained and expanded the IP/MPLS network for the electric power industry in Serbia.
- Configured networks and wrote site acceptance tests at Electro Distribution (Belgrade).
- Implemented an IP network at SMATSA (Serbian and Montenegro Air Traffic Services Agency Ltd.).
- Implemented an IP network at The Building Directorate (Serbia).
- Maintained and upgraded the IP network at a Holiday Inn hotel.
- Configured and managed Cisco, Linksys, and Allied Telesis network equipment.
Technologies: Networks, Cisco
Technical Support Engineer
2009 - 2010
Telekom Srbija
- Troubleshot issues in ADSL, IPTV, and digital telephony.
- Provided customer support to business users to help resolve the reported issues.
- Tracked defects in the network management system software.
Technologies: IPTV, ADSL
Experience
Projects via Toptal
I worked on projects for several clients via Toptal, mostly long term, testing web and mobile applications in several industries such as insurance, health, gambling and betting, culture, and education. I have worked as a QA engineer/team lead, organizing QA processes, manual and automated, from ground zero.
Codeplicity | White Label Web Application
I've created an automated functional test suite with Selenium and REST API test suite with SoapUI to maintain the quality of a large white label web application that contains over 2,500 domains.
Btobet | Gaming and Betting Web Application
For this project, I have organized the QA from the beginning. I created automated functional and SOAP API test suites using Selenium and SoapUI and integrated it with Jenkins CI to maintain the quality of the app at high levels at all times.
Cisco VXME
I tested the Cisco VXME that extends the Cisco Jabber to virtualized environments by facilitating real-time voice and video processing on a local device.
Cisco CCNP Voice Engineering Work
At the beginning of my engineering career, I worked with Cisco equipment (routers, switches, IP phones, servers) for three years and completed certification for Cisco CCNP Voice.
Education
2001 - 2008
Master of Science Degree in Telecommunications
University of Belgrade, Faculty of Traffic and Transport Engineering - Belgrade, Serbia
Skills
Libraries/APIs
REST APIs
Tools
Zebrunner, TestRail, Postman, Jira, Confluence, Git, GitHub, Eclipse IDE, Apache Maven, Apache JMeter, SoapUI, VirtualBox, Jenkins, MySQL Workbench
Paradigms
Scrum, Kanban, Agile, Manual Testing, Test Automation, Testing, Functional Testing, E2E Testing
Platforms
Windows, Mobile, Android, iOS, TestLink, MacOS, Eclipse, Heroku, Blockchain, NetBeans
Languages
Java, CSS, HTML, JavaScript
Frameworks
JUnit, Selenium, TestNG, Taurus, Cypress
Other
QA Testing, Software QA, Manual Software Testing, Regression Testing, Test Cases, Agile Sprints, QA Leadership, Quality Assurance (QA), Agile Coaching, Agile QA, Mobile App Testing, Manual QA, Cross-browser Testing, UI Testing, Test Management, Scrum Master, Certified ScrumMaster (CSM), API Testing, Agile Software Testing, QA Automation, Cisco, Networks, ADSL, IPTV, BlazeMeter, CCNP, Artificial Intelligence (AI), Large Language Models (LLMs), testmo
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