Senior QA Engineer: POS Tax Testing Expert

Capgemini; Seattle (WA); On-site; USD 43,000 - 67,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

Retirement benefits

Job summary

Tundra Technical Solutions is seeking a highly detail-oriented Manual QA Engineer to validate U.S. tax calculations within Point-of-Sale systems, in a high-volume retail setting.

You will ensure accuracy across jurisdictions and verify tax rules during end-to-end POS testing including sales, refunds, voids, discounts, and promotions. Responsibilities include creating test plans, developing cases, executing tests, triaging defects, and collaborating with Product, BA, Developers, and Tax teams.

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.
• Solid understanding of: State, county, city, and district tax calculations; Tax exemptions and tax holidays; Tax-inclusive and tax-exclusive pricing; Tax rounding and jurisdictional rules.
• Experience testing POS transaction flows: Returns, Exchanges, Refunds, Voids/Reversals, Discounts and Promotions, Gift Card Transactions.
• Experience using Jira, Azure DevOps, or similar defect-tracking tools.
• Strong analytical and troubleshooting skills.

Responsibilities

• 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.
• Validate tax calculations for sales, refunds, voids, returns, exchanges, and post‑void scenarios.
• Perform end‑to‑end testing across POS, payment processing, back‑office, and reporting systems.
• Investigate and document tax discrepancies, defects, and edge‑case scenarios.
• Collaborate with Product, Business Analysts, Developers, and Tax Compliance teams to clarify requirements and expected behavior.
• Participate in defect triage, sprint ceremonies, regression testing, and release validation activities.
• Create detailed test plans, test cases, test evidence, and execution reports.

Skills

Manual QA

POS testing

Tax knowledge

SQL basics

API testing

Agile/Scrum

Tools

Jira

Azure DevOps

Postman

Job description

Tundra Technical Solutions is seeking a highly detail-oriented Manual QA Engineer to validate U.S. tax calculations within Point-of-Sale systems, in a high-volume retail setting.

You will ensure accuracy across jurisdictions and verify tax rules during end-to-end POS testing including sales, refunds, voids, discounts, and promotions. Responsibilities include creating test plans, developing cases, executing tests, triaging defects, and collaborating with Product, BA, Developers, and Tax teams.