Senior QA Engineer

About The Opportunity We are looking for a resilient, detail-oriented Senior QA Engineer to join our high-volume e-commerce platform team for a global client (fluent English is a must). This is a hybrid quality engineering position with a 70% focus on functional/exploratory testing (APIs, UI, Databases) and a 30% focus on test automation and AI-assisted QA workflows.

The ideal candidate thrives in a fast-paced, highly dynamic environment under direct oversight and pressure, demonstrating schedule flexibility for off-hour release deployments and critical production support.

Responsibilities

• Functional & Exploratory Testing: Lead end-to-end web, REST API, and database testing. Identify edge cases, error states, and regression risks across Dev, Staging, and Production environments.
• API & Database Validation: Deep-dive into REST API contracts (payloads, headers, status codes, dynamic tokens) and execute complex SQL queries to verify data integrity and downstream consistency.
• Test Automation & AI Integration: Build and maintain UI and API automation scripts using Python and/or Playwright. Utilize AI tools (Claude, agents, skills) to accelerate test scenario generation and automation scaffolding.
• Technical Documentation: Author clear, rigorous test plans, test cases, and high-quality defect reports complete with logs, API payloads, and reproduction steps.
• Deployment & Release Readiness: Provide evidence-based release recommendations.
• Maintain schedule flexibility to support deployment windows, off-hour releases, and live production validations.

Required Qualifications

• Core Technical QA: Deep expertise in Functional Testing, REST API Testing (Postman/Newman, Playwright APIRequestContext, or Pytest), and SQL/Database querying.
• QA experience in high-throughput, fast-changing environments.
• Practical hands-on experience with Python and UI automation frameworks (preferably Playwright).
• Proven experience using AI tools (Claude, LLMs, or agentic frameworks) to enhance test coverage, analyze requirements, and speed up testing workflows.
• Working knowledge of load and performance testing concepts, metrics, and risk management.
• Excellent skills in writing test plans, coverage matrices, and bug reports via Jira and TestRail.
• Proven ability to handle pressure, close oversight, tight deadlines, and shifting priorities with high ownership and accountability.
• Availability to adjust hours for planned release deployments, hotfixes, or critical environment issues.

Nice To Have Skills

• Domain experience in Supply Chain, Logistics, Warehouse Management, or Order Fulfillment.
• Familiarity with TypeScript and CI/CD pipeline integration (GitHub Actions).

Avenue Code reinforces its commitment to privacy and to all the principles guaranteed by the most accurate global data protection laws, such as GDPR, LGPD, CCPA and CPRA. The Candidate data shared with Avenue Code will be kept confidential and will not be transmitted to disinterested third parties, nor will it be used for purposes other than the application for open positions. As a Consultancy company, Avenue Code may share your information with its clients and other Companies from the CompassUol Group to which Avenue Code’s consultants are allocated to perform its services.