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# QA NGPOS Tax Testing

- **Company:** Net2Source
- **Location:** Seattle, WA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), JIRA, Microsoft Azure, Regression Testing, Postman, Backend
- **Published:** September 5, 2026
- **Apply:** https://www2.jobdiva.com/portal/?a=fyjdnwkqny26xqof9rceu6y6gam6750308agqi8uui1cmk3v9j6duy26aoewnusi&compid=0/jobs/29215661#/jobs/29215661

## About the Role

We are 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 forensuring 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., 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:
 - Sales
 - 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.

**Preferred Qualifications**

 - Experience working in 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, Starbucks 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.

## Description

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.


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