Nilay Kale

QA Engineer with 6+ years of experience in payment systems, bank integrations and e-commerce platforms. Led end-to-end testing for 10+ bank integrations from initial testing through production release and designed 1,000+ test cases.

Specialized in API, regression, performance and security testing. Write JavaScript-based test scripts with

Postman/Newman, integrate tests into CI/CD pipelines and validate results at the database level with SQL. Work in Agile teams with a focus on edge cases, concurrency issues and data consistency.

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.

MSc in Computer Engineering | International Balkan University | 2021 - 2022

BSc in Computer Engineering | Trakya University | 2016 - 2020