NTT DATA North America · 1 month ago
Test Engineer
United States
Full-time
Remote
Mid Level
3+ years expNTT DATA is a leading business and technology services provider, and they are seeking a Test Engineer to join their team. The role involves executing data validation queries, performing regression testing, and collaborating with developers to ensure data integrity and quality during migrations.
ConsultingDigital MarketingInformation ServicesInformation TechnologyIT Management
Responsibilities
Execute data validation queries to compare: Source (Yellowbricks / Informatica outputs) vs Target (Databricks / Snowflake / dbt outputs)
Perform: Row-count checks between source and target tables
Aggregate validations (sums, counts, averages, distinct counts, min/max)
Sample and cell-level comparisons for critical entities and fields
Validate schema consistency (data types, lengths, precision/scale, nullable fields, constraints)
Log discrepancies, analyze patterns, and work with developers to support root-cause analysis
Understand Informatica mappings and workflows and their expected outputs
Validate dbt models (staging, core, marts) on Snowflake against legacy Informatica outputs
Test Databricks notebooks/jobs that replicate Yellowbricks logic — ensuring correct transformations, joins, filters, and aggregations
Validate CDC / incremental loads: new, changed, and deleted records are handled correctly
Execute functional tests to verify correct application of business rules after migration
Perform regression testing for each migration wave to ensure that previously validated data and flows remain correct
Support integration testing across layers: Source → Databricks / Snowflake dbt → Snowflake → downstream reports or extracts Validate downstream outputs (if in scope): reports, extracts, or interfaces that consume migrated data
Assist in executing basic performance tests for key queries and jobs (e.g., comparing runtime vs baseline)
Monitor pipeline runs for job failures, retries, and data volume anomalies
Execute test cases, record results, and maintain traceability to requirements
Log defects with clear steps, data samples, and evidence (screenshots/SQL) in the defect tracking tool (e.g., JIRA, Azure DevOps)
Retest resolved defects and support regression runs
Maintain test case repositories, test data sets, and execution logs for audit and re-use
Participate in daily stand-ups / defect triage with onshore/offshore teams
Qualification
Required
3–6 years of experience in Software Testing / QA, with at least 2+ years in Data Warehouse / ETL testing
Strong SQL skills for writing complex queries and validations (joins, aggregations, window functions, filters)
Hands-on experience testing on at least one data platform such as: Snowflake, Databricks, or other cloud DW/Big Data platforms
Exposure to Informatica (understanding mappings/workflows and expected outputs)
Good understanding of data warehouse concepts: facts/dimensions, SCDs, aggregations, grain, source-to-target mapping
Familiarity with test management and defect tracking tools (e.g., Azure DevOps, JIRA, TestRail, qTest)
Experience with Excel or similar tools for managing validation results and reconciliation artifacts
Strong attention to detail and a structured approach to validation
Ability to analyze data discrepancies and collaborate with developers to narrow down issues
Preferred
Practical experience in data migration / data platform modernization projects is strongly preferred
Experience with Snowflake/Databricks is a plus
Exposure to dbt or willingness to learn dbt-based validations (model outputs, dbt test results)
Company
NTT DATA North America
NTT DATA, Inc. is a trusted global innovator of business and technology services.
10001+ employees
H1B Sponsorship
NTT DATA North America has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (144)
2024 (182)
2023 (257)
2022 (871)
2021 (809)
2020 (1266)
Funding
Current Stage
Late StageLeadership Team
John Barr
Vice President - Insurance Strategy
Recent News
2025-12-05
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