QA Engineer | The Despatch Company
Dec 2025 - Present | Remote (United Kingdom)
Channels API - Multichannel e-commerce integration platform (Laravel / PostgreSQL)
- Responsible for manual and API testing of backend features and fixes across order synchronization, inventory management, fulfillment and rules engine workflows within an Agile team; built Postman collections, curl scripts and SQL queries.
- Identified critical defects including credential exposure, stock deductions bypassing SKU mapping and race conditions in queue synchronization; documented root causes and reproduction steps.
- Verified fixes for open redirect, CORS, Host Header Injection and stored XSS vulnerabilities using edge-case inputs;
distinguished environment-related false positives.
- Assessed regression risk of code changes affecting 100+ files; prepared test plans in Turkish and English and performed multi-table PostgreSQL validations.
QA Engineer | Çiçeksepeti
Nov 2021 - Dec 2025 | Remote
- Performed API testing of payment services by running Postman collections with Newman on the existing.NET-based test infrastructure; executed tests through existing CI/CD pipelines.
- Wrote pre-request and test scripts in JavaScript within Postman collections; designed 1,000+ test cases for REST and
SOAP services based on Swagger/OpenAPI documentation.
- Set up test environments by running projects with Docker for API testing.
- Validated successful/failed payments, cancellations, full/partial refunds, 3D Secure, timeouts and duplicate payment prevention; supported installment, bank transfer, wallet, fraud and campaign testing.
- Owned the end-to-end testing process for 10+ bank integrations, including Akbank and Yapı Kredi, from initial testing through production release.
- Simulated bank responses with Mountebank (service virtualization); prepared test data with SQL scripts and verified transaction states, payment amounts and wallet balances with SQL queries.
- Conducted performance testing of payment services with Apache JMeter.
QA Engineer | Netaş - Akbank Project
Jan 2021 - Nov 2021 | Remote
- Performed automation and service testing for the Akbank Axess mobile application; executed closed-system API tests in a keyword-driven test framework and ran parallel validations with Postman.
QA Engineer | Ronwell - Dormakaba Project
Mar 2020 - Jan 2021 | Edirne
- Wrote new automated tests in JavaScript on the existing Cypress framework for a web application monitoring electronic lock systems; contributed to testing with Cypress and SoapUI.
