Data Warehouse Test Engineer

Job Title:
Data Warehouse Test Engineer

Location:
Dearborn, MI (Onsite)

• Test Engineering: 5+ years designing and executing functional, regression, integration, and negative test suites. Experience with AI/ML system testing or conversational AI testing strongly preferred.
• API Testing: REST API testing using tools such as Postman, pytest, or equivalent. Experience validating JSON schemas, HTTP error codes, and streaming responses (SSE).
• SQL / Big Query: Advanced SQL authoring in Big Query Standard SQL; window functions, CTEs, date arithmetic, SAFE functions, STRUCT/ARRAY handling. Must be able to independently write complex validation queries against a multi-table star schema.
• Defect Documentation: Ability to write precise, reproducible defect reports that include expected SQL, actual SQL, expected result set, and actual result set.
• Bank Domain Knowledge: Understanding of retail/commercial bank operations: deposits, accounts, transactions, AML, KYC, fraud, compliance. Ability to interpret bank KPIs and business rules without extensive hand-holding.
• Critical Thinking & Business Analysis: Ability to read a business question, understand the intended meaning, independently determine the correct SQL answer, and validate whether an AI system answered correctly, not just syntactically but semantically.

• Experience testing LLM-based or NL-to-SQL systems (Cortex, Looker, Thought Spot, or similar)
• Familiarity with GCP services:
  Big Query, Cloud Run, Firestore, Dataplex, IAP
• Python scripting for test automation (pytest, SQL Alchemy, google-cloud-bigquery SDK)
• SCD2 / data warehousing concepts (bitemporal tables, slowly changing dimensions)
• Regulatory knowledge: GLBA, FCRA, BSA/AML, BCBS 239, SOX data quality
• Experience with data quality testing and data reconciliation
• Knowledge Graph or ontology concepts
• Automotive finance domain knowledge

The pay range for this role is $110,000- $120,000 per annum including any bonuses or variable pay. Tech Mahindra also offers benefits like medical, vision, dental, life, disability insurance and paid time off (including holidays, parental leave, and sick leave, as required by law). Ask our recruiters for more details on our Benefits package. The exact offer terms will depend on the skill level, educational qualifications, experience and location of the candidate.

"Tech Mahindra is an Equal Employment Opportunity employer. We promote and support a diverse workforce at all levels of the company. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex, age, national origin, or disability. All applicants will be evaluated solely on the basis of their ability, competence, and performance of the essential functions of their positions with or without reasonable accommodations.

Reasonable accommodations also are available in the hiring process for applicants with disabilities. Candidates can request a reasonable accommodation by contacting the company ADA Coordinator at ADA_A"