[8BE] Senior QA Engineer

We are Software Mind, an awesome team of engineers who are ready to ramp up any top-notch company’s projects! Our aim? To always be one step ahead. Become part of a multicultural company in constant growth with an excellent work environment certified by Great Place To Work! Project – the aim you’ll have Software Mind is partnering with a leading US-based promotional products and e-commerce company to build a new shipping and delivery service for its white-label B2B commerce platform, built on Shopify Plus with a .NET microservices backend on AWS. The service integrates with major shipping carriers, the e-commerce storefront, and existing order management systems. It is a short, focused engagement: a discovery phase followed by two-week sprints through to production release. Position – how you’ll contribute:  • Define the test strategy, quality metrics, and test approach during discovery • Derive test cases from acceptance criteria in collaboration with the Business Analyst • Test REST APIs end-to-end: functional, contract, negative, and boundary scenarios • Validate business-rule logic, including date/time and edge-case scenarios • Run integration tests against third-party APIs and sandboxes, including error and timeout handling • Test event-driven, asynchronous flows (queues, retries, error handling) • Execute end-to-end e-commerce scenarios across storefront, backend services, and downstream systems • Build and maintain automated API and regression suites running in CI/CD • Test web admin interfaces • Coordinate with client and partner QA teams; drive defect triage, UAT support, and release-readiness sign-off Expectations – the experience you need • 5+ years in software QA, including 3+ years of API and integration test automation • Strong REST API testing skills: JSON, OpenAPI / Swagger, Postman or code-based frameworks • Test automation in C# / .NET (xUnit / NUnit, Reqnroll / SpecFlow) or TypeScript (Playwright) • Experience testing asynchronous, event-driven systems (AWS SQS / SNS or equivalent) • Rigorous test design: decision tables, boundary values, equivalence partitioning • Experience integrating automated tests into CI/CD pipelines • Defect and test management in Jira (Xray, Zephyr, or similar) • Experience coordinating with client-side QA and supporting UAT in multi-vendor projects • Excellent communication in English — written and spoken — for daily client interaction Nice-to-have requirements: • E-commerce checkout testing, ideally on Shopify • Experience with shipping or carrier APIs • Performance and load testing (k6, JMeter) • Contract testing (e.g., Pact) • AI-assisted test design and test-case generation