Test Engineer

NTT DATA BUSINESS SOLUTIONS; Hyderabad; On-site; INR 600,000 - 900,000; Full time

Job summary

NTT DATA BUSINESS SOLUTIONS in Hyderabad, India, is seeking a Test Engineer to join our data integration and validation team, focusing on data migration from legacy systems to modern platforms.

You will implement SQL tests, validate Snowflake and Databricks outputs, verify dbt models, and collaborate with onshore/offshore teams to ensure data quality across migrated pipelines.

Qualifications

• 2-4 years of experience in Software Testing / QA, with at least 2+ years in Data Warehouse / ETL testing.
• Practical experience in data migration / data platform modernization projects is strongly preferred.
• Strong SQL skills for writing complex queries and validations.

Responsibilities

• Execute data validation queries to compare source vs target (Yellowbricks / Informatica outputs vs Databricks / Snowflake / dbt outputs).
• Perform row-count checks between source and target tables.
• Aggregate validations (sums, counts, averages, distinct counts, min/max).
• Validate schema consistency (data types, lengths, precision/scale, nullable fields, constraints).
• Log discrepancies, analyze patterns, and support root-cause analysis with developers.
• Validate dbt models (staging, core, marts) on Snowflake against legacy Informatica outputs.
• Test Databricks notebooks/jobs that replicate Yellowbricks logic and transformations.
• Validate CDC / incremental loads: new, changed, and deleted records.

Skills

SQL

Snowflake

Databricks

Informatica

dbt

Excel

Test Management Tools

Tools

Azure DevOps

JIRA

TestRail

qTest

Job description

Job Summary

We are currently seeking a Test Engineer to join our team in Hyderabad, Telangana (IN-TG), India (IN).

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.

Minimum Skills Required

• 2-4 years of experience in Software Testing / QA, with at least 2+ years in Data Warehouse / ETL testing.
• Practical experience in data migration / data platform modernization projects is strongly preferred.

Technical Skills

• 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; experience with Snowflake/Databricks is a plus.
• Exposure to Informatica (understanding mappings/workflows and expected outputs).
• Exposure to dbt or willingness to learn dbt-based validations (model outputs, dbt test results).
• 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.

Soft Skills

• Strong attention to detail and a structured approach to validation.
• Ability to analyze data discrepancies and collaborate with developers to narrow down issues.