Data Quality Engineer: ETL, SQL & Big Data (3-Month Contract)

Applaudo; Colombia; On-site; COP 66,960,000 - 100,440,000; Full time

Job summary

Applaudo in Colombia is seeking a Data Quality Assurance Engineer for a 3-month contractor engagement to ensure data accuracy, completeness, and reliability across high‑volume environments.

You will validate ETL processes, write medium to complex SQL queries, perform data profiling, and collaborate with data teams to identify defects and improve testing practices in GCP-based pipelines. Strong English communication is essential.

Qualifications

• Bachelor’s Degree in CS, Software Engineering, Information Systems, Data Engineering, or related field.
• 1+ years of experience in Big Data and Data Quality Testing.
• Experience with data profiling in high-volume data environments.
• Hands-on ETL testing and data lifecycle validation.
• Strong SQL for data validation and querying, including medium to complex queries.
• Knowledge of relational and non-relational databases and data integrity verification.
• Experience with scheduling/orchestration tools like Airflow or AutoSys.
• Experience with ALM and Jira for test management and defect tracking.
• Ability to create, document, maintain, and execute test plans and test cases.
• Full Professional English proficiency.

Responsibilities

• Perform data quality validations to ensure data accuracy and integrity in data processing within GCP environments.
• Write medium to complex SQL queries for data validation and result verification.
• Test and validate ETL processes and data transformations across the lifecycle.
• Verify backend applications, databases, and Big Data environments follow best practices.
• Validate analytics event capture in file systems or databases using SQL or Python/Shell.
• Develop, maintain, and execute regression automation for GUI and backend processes.
• Identify, document, and communicate defects found during testing.
• Create and maintain test plans, test cases, and QA docs.
• Collaborate with technical teams to investigate data-quality issues and support resolutions.

Skills

Analytical mindset

Attention to detail

English proficiency

Education

Bachelor’s Degree in CS/Software Engineering/Data fields

Tools

Airflow

AutoSys

ALM

Jira

GCP

Job description

Applaudo in Colombia is seeking a Data Quality Assurance Engineer for a 3-month contractor engagement to ensure data accuracy, completeness, and reliability across high‑volume environments.

You will validate ETL processes, write medium to complex SQL queries, perform data profiling, and collaborate with data teams to identify defects and improve testing practices in GCP-based pipelines. Strong English communication is essential.