Senior Quality Assurance Engineer

For Brazil Only, PJ contract, Fluent English

Position : Senior Quality Assurance (QA) Engineer

Location : Brazil (Remote)

Work Hours : Must have overlap with U.S. Central Time

Start Date : Immediate

Contract Type : PJ (Pessoa Jurídica)

Duration : 3-4 months

Language Requirement : Fluent English required ( U.S.-based company)

Summary

We’re looking for an experienced QA Engineer who ramps up quickly on complex business domains and turns that understanding into clear, risk-based test strategies. You’ll combine strong manual testing skills with proven test case design and automation in .NET (C#) to raise the bar on quality across web, API, and data flows. You’ll partner closely with Product, Engineering, and DevOps to deliver reliable, testable, and observable software continuously.

What You’ll Do

• Translate business processes into tests : Rapidly learn product / domain concepts and map endtoend workflows into highvalue test scenarios and acceptance criteria.
• Design and execute test suites : Build and maintain comprehensive manual and automated tests (UI, API, integration, regression, smoke, and exploratory).
• Build .NET automation : Develop and maintain C# test automation frameworks (e.g., Playwright , Selenium WebDriver , SpecFlow BDD , NUnit / xUnit / MSTest ) aligned to SOLID and POM principles.
• Enable CI / CD quality gates : Integrate automated tests into pipelines (e.g., Azure DevOps , GitHub Actions ) with parallel runs, test reporting, and flaky-test management.
• Collaborate across disciplines : Work with Product Owners to refine acceptance criteria, with Developers to shift-left quality, and with business users to validate in staging / preproduction environments and in production once deployed.
• Own defect lifecycle : Identify, document, prioritize, and drive resolution of defects with clear reproduction steps, logs, screenshots, and impact.
• Data & API validation : Test APIs, validate payloads and contracts (e.g., via Swagger / OpenAPI ), and verify database outcomes ( SQL Server ).
• Non-functional checks : Contribute to performance baselines (e.g., k6 , JMeter ), and security test coordination.
• Test strategy & traceability : Maintain risk-based test plans, coverage maps, and traceability to requirements / ACs.
• Mentor & improve : Share best practices, pair on tests, and improve standards for reliability, maintainability, and observability of tests.

Must Have Qualifications