Manual QA Engineer

Position Title: Manual QA Engineer
Location: Seattle, WA (Onsite)
Duration: Long Term Contract


Role and responsibilities:
Client is seeking a highly detail-oriented Manual QA Engineer with hands-on experience validating U.S. tax calculations within Point-of-Sale (POS) systems, preferably in a high-volume retail environment. The ideal candidate will be responsible for ensuring the accuracy of sales tax calculations across multiple jurisdictions, validating tax-related business rules, and executing end-to-end testing of POS transactions, including sales, refunds, voids, returns, discounts, and promotions.


Basic Qualifications:

• 7 years of Manual QA testing experience.
• Strong experience testing retail POS applications.
• Hands-on experience validating U.S. sales tax calculations and tax compliance requirements.
• Experience using Jira, Azure DevOps, or similar defect-tracking tools.
• Strong analytical and troubleshooting skills.

Required Skills:

• Develop, review, and execute manual test cases for POS tax calculation functionality.
• Validate U.S. sales tax calculations across federal, state, county, city, and special tax jurisdictions.
• Test tax scenarios for beverages, food items, merchandise, gift cards, and digital transactions.
• Verify tax behavior for discounts, promotions, coupons, loyalty rewards, and tender-specific transactions.
• Perform end-to-end testing across POS, payment processing, back-office, and reporting systems.
• Collaborate with Product, Business Analysts, Developers, and Tax Compliance teams to clarify requirements and expected behavior.
• Create detailed test plans, test cases, test evidence, and execution reports.

Preferred Qualifications:

• Experience working in a large-scale retail environment.
• Experience validating tax integrations with third-party tax engines such as Vertex, Avalara, or similar solutions.
• Familiarity with payment processing and tender types including Credit Card, Mobile Pay, Apple Pay, GooglePay, and Gift Cards.
• Basic SQL knowledge for backend validation.
• Experience testing APIs using Postman or similar tools.
• Experience working in Agile/Scrum environments.