Oleksandr Petrina

Senior

Registration: 18.02.2026

Specialization: QA Engineer

— Manual QA Engineer with 11+ years of experience in international e-commerce and enterprise systems. — Strong expertise in backend and API testing (SOAP & REST), payment integrations, and financial transaction validation. — Proven ability to identify defects in complex business logic, ensure system stability, and improve product quality prior to release. — Solid understanding of testing theory, test design techniques, and full defect lifecycle management. — Holds a Master’s degree in Computer Science and Finance.

SQL SoapUI Postman Python Jira Agile API CRM Confluence Excel QA Scrum Selenium Web Design REST SOAP

Portfolio

Platinum Performance

● QA Engineer responsible for ensuring the quality and reliability of the Platinum Performance e-commerce platform. ● Performed manual testing of front-end and back-end components, including API and payment workflow validations. ● Tracked defects with JIRA, and collaborated with developers and stakeholders to confirm business logic and optimize QA processes. Key Achievements: ● Detected critical functional and integration issues before production. ● Contributed to improving test coverage and release efficiency.

Paccar Online Part Counter

● As a QA Engineer, I was responsible for ensuring the overall quality, stability, and functionality of the OPC landing page. My role included: ● Conducting thorough manual testing of front-end and back-end components, including functional, regression, and exploratory testing. ● Testing API integrations with backend services to ensure accurate data retrieval and display on the landing page (SOAP & REST). ● Performing backend and database validation using SQL to verify data consistency and transactional accuracy. ● Identifying, documenting, and tracking bugs and defects throughout the development lifecycle using JIRA, ensuring timely resolution by the development team. ● Collaborating closely with developers, PMs, and business stakeholders to clarify requirements and validate business logic. ● Contributing to test documentation, including test cases, checklists, and release notes to support structured QA processes. ● Participating in process improvements, suggesting optimizations for regression test coverage and workflow efficiency.

Carhartt

● QA Engineer responsible for ensuring the functionality, stability, and quality of the Carhartt EU e-commerce website. ● Conducted manual testing of front-end and back-end components, including API integrations, functional, regression, and exploratory testing. ● Verified transactional and order data using SQL. ● Tracked and reported defects using JIRA and collaborated with developers and business stakeholders to validate requirements and improve QA processes. Key Achievements: ● Identified critical defects before production release. ● Enhanced test coverage and improved release efficiency.

Skills

API Testing

Manual testing

Functional testing

Integration testing

End-to-End testing

Compatibility testing

Cross-browser testing

Requirements Analysis

QA Process Improvements

SOAP

REST

Work experience

QA Engineer / QA Consultant

since 12.2024 - Till the present day |Reactive Hive

Testing

E-commerce projects. ● Provided QA services for international e-commerce agencies. ● Performed functional, integration, regression, E2E, compatibility, and API testing. ● Tested backend services and business workflows. ● Improved test coverage and QA processes, increasing QA efficiency by 20%. ● Reduced release time by 15% through structured regression testing.

QA Engineer / QA Consultant

12.2024 - 05.2025 |Foundation Commerce

Testing

● Provided QA testing and consulting services across 10+ e-commerce projects. ● Executed functional, integration, cross-browser, and usability testing to ensure stable releases and seamless customer experiences. ● Optimized test coverage and workflows that increased QA efficiency by 20% and accelerated release timelines by 15%. ● Identified and resolved critical gaps in testing processes, enhanced overall QA effectiveness, and supported teams in achieving consistent on-time launches.

Senior QA Analyst

12.2021 - 11.2024 |VML Enterprise Solutions (earlier WPP)

Testing

E-commerce projects. ● Performed hands-on QA activities in complex e-commerce and financial integration projects. ● Performed functional, integration, and regression testing. ● Validated backend integrations and payment workflows. ● Analyzed product requirements and business logic to optimize test scenarios. ● Identified critical defects before production releases. ● Contributed to standardizing the QA process and increasing test coverage by 25%. ● Collaborated closely with developers, PMs, DevOps, and business stakeholders.

Senior QA Engineer

08.2018 - 12.2021 |WPP (earlier Gorilla Group)

Testing, SQL, JMeter

E-commerce projects. ● Manual testing of backend services and API integrations. ● Tested payment solutions and transaction flows based on real user scenarios. ● Performed SQL validation of financial and order data. ● Conducted risk-based testing during sprint cycles. ● Created simple automated tests (Codeception). ● Performed load testing using JMeter to improve stability.

QA Engineer

04.2014 - 08.2018 |Gorilla Group

Testing

● Specialized in Adobe Commerce (Magento) e-commerce projects. ● Created detailed test cases and ensured high test coverage. ● Conducted functional, integration, and regression testing. ● Identified critical defects at early development stages. ● Ensured stable production releases with a low post-release defect rate.

Educational background

Computer Science (Masters Degree)

2017 - 2018

European University

Finance (Masters Degree)

2008 - 2009

European University

Languages

EnglishProficientUkrainianNativeRussianProficientNorwegianUpper Intermediate