Senior Data QA / Tester

Quantum Technologies. LLC; Sunnyvale (CA); Presencial; USD 140.000 - 190.000; Jornada completa

Descripción de la vacante

Quantum Technologies. LLC seeks a Senior Data QA/Tester to validate Snowflake/dbt data pipelines and transformations. You will ensure accuracy, completeness, and quality across data flows built by data engineering teams.

The ideal candidate has 10+ years in data testing, strong SQL, dbt validation skills, and experience building automated testing frameworks with Python. Collaborative, with Git-based workflows and code reviews.

Formación

• 10+ years in Data Testing / Data QA / validation roles.
• Strong SQL with complex validation queries.
• Hands-on testing of dbt-based transformations (schema/tests/models).
• Understanding dbt project structure and workflows.
• Snowflake experience: validation, reconciliation, micro-partitions.
• Experience building automated data testing frameworks with Python/SQL.
• Hands-on Git workflows, PRs, and code reviews.

Responsabilidades

• Validate data pipelines and transformations for accuracy and reliability.
• Develop and maintain automated data tests in Python/SQL.
• Collaborate with data engineering to improve data quality controls.
• Validate Fivetran ingestion as needed and monitor data lineage.

Conocimientos

SQL

dbt testing

Data QA

Automation

Git workflows

Educación

Bachelor's or higher in CS/IS or related field

Herramientas

dbt

Snowflake

Python

Fivetran

Descripción del empleo

• We are seeking a Senior Data QA / Tester with strong hands-on experience in validating modern data pipelines and transformation frameworks built on Snowflake and dbt.
• This role is responsible for ensuring the accuracy, completeness, reliability, and quality of data pipelines and transformations developed by data engineering teams.
• The ideal candidate brings deep experience in data validation, SQL-based testing, dbt testing frameworks, and automation.
• Experience with Fivetran-based ingestion validation is a plus, but the primary focus is testing Snowflake and dbt-based transformations.

Required Qualifications:

• 10+ years of experience in Data Testing / Data QA / Data Engineering Validation roles.
• Strong SQL expertise with experience writing complex validation queries.
• Hands-on experience testing dbt-based transformations, including schema tests, custom tests, models, snapshots, and transformation validation.
• Understanding of dbt project structure and workflows.
• Strong Snowflake experience, including data validation, reconciliation, micro-partitions, incremental loads, query behavior, and large-scale datasets.
• Experience building automated data testing frameworks using Python and SQL.
• Hands-on experience with Git workflows, version control, pull requests, and code reviews.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.