Senior Data Scientist – Data Quality & Validation

NielsenIQ; Bogotá; Hybrid; COP 133,920,000 - 200,880,000; Full time

Benefits offered by this job

Flexible working environment

Volunteer time off

LinkedIn Learning

Employee-Assistance-Program (EAP)

Job summary

NIQ is seeking a hands-on Senior Data Scientist in Bogotá to tackle complex measurement challenges using large-scale consumer and retail datasets. You’ll emphasize data quality, statistical methodologies, sampling, and pipeline validation to ensure product reliability.

You will collaborate with data science, technology, and product teams to diagnose issues, validate outputs, and scale solutions across cloud platforms, supporting critical business decisions.

Qualifications

• 3–6 years of hands-on analytics experience in data science or related roles.
• Strong foundation in statistics, mathematics, econometrics, or data science.
• Advanced proficiency in Python for data manipulation and analysis.
• Strong SQL skills and ability to query large datasets.
• Experience with data cleaning, validation, aggregation, and quality control at scale.
• Hands-on cloud experience, ideally Azure and Databricks.
• Experience with Git for version control.
• Ability to explain technical concepts clearly and work independently.

Responsibilities

• Work hands-on with large-scale consumer and behavioral datasets to support measurement products.
• Evaluate data preparation, validation, and projection methodologies for improvements.
• Design and prototype new statistical or data-driven approaches.
• Develop end-to-end quality, validation, and performance indicators for product accuracy.
• Partner with Product, Engineering, and global Data Science teams to deploy solutions.
• Investigate data issues, perform root-cause analysis, and recommend actions.
• Summarize findings and recommendations for technical and non-technical stakeholders.
• Maintain documentation of methodologies and best practices.

Skills

Analytics experience

Statistics

Python

SQL

Data cleaning

Cloud platforms

Git

Communication

Tools

Azure

Databricks

Spark/PySpark

Job description

NIQ is seeking a hands-on Senior Data Scientist in Bogotá to tackle complex measurement challenges using large-scale consumer and retail datasets. You’ll emphasize data quality, statistical methodologies, sampling, and pipeline validation to ensure product reliability.

You will collaborate with data science, technology, and product teams to diagnose issues, validate outputs, and scale solutions across cloud platforms, supporting critical business decisions.