Manual QA Engineer

Seattle, WA, United States (On-site)

Contract (9 months)

Published 6 hours ago

QA Testing

QA

pos

sales tax calculations

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 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.

Key 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.

Required 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:

  • 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 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, Debit Card, Mobile Pay, Apple Pay, Google Pay, and Gift Cards.
• Basic SQL knowledge for backend validation.
• Experience testing APIs using Postman or similar tools.
• Experience working in Agile/Scrum environments.

The pay range that the employer in good faith reasonably expects to pay for this position is $33.39/hour - $52.16/hour. Our offered benefits include medical, dental, vision and retirement benefits. Applications will be accepted on an ongoing basis.

Tundra Technical Solutions is among North America’s leading providers of Staffing and Consulting Services. Our success and our clients’ success are built on a foundation of service excellence. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Unincorporated LA County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: client provided property, including hardware (both of which may include data) entrusted to you from theft, loss or damage; return all portable client computer hardware in your possession (including the data contained therein) upon completion of the assignment, and; maintain the confidentiality of client proprietary, confidential, or non-public information. In addition, job duties require access to secure and protected client information technology systems and related data security obligations.