Global Service Center Media Measurement (GSC MM) is a global operations department located in Sofia. As a centralized operations Hub it includes roles with various profiles, working closely with all country local Operations, as well as the MM Technology and Product teams. The department provides wide range of services, including helpdesk support, data and systems monitoring, data pipelines configuration and processing, data analytics for client products, as well as data science support. 

The Senior Data Scientist is a key member of the Advanced Analytics team, driving the development of innovative solutions and products through the design and execution of complex statistical analyses. The role is responsible for leading data process optimizations and providing advanced analytical support to teams on the most complex ad-hoc tasks, ensuring impactful and actionable outcomes. 

• Develop efficient methods for handling missing values, outliers, and inconsistencies in large-scale datasets that can be applied to products 
• Perform in-depth exploratory data analysis (EDA) to identify trends and actionable insights in various data sources 
• Lead the preprocessing and cleaning of complex datasets 
• Create advanced visualizations that effectively communicate findings to both technical and non-technical stakeholders 
• Write and optimize advanced SQL queries to retrieve key metrics 
• Develop and evaluate predictive models (e.g. regression, classification) and ability to fuse various data sources 
• Identify process performance issues and implement solutions for improvement 
• Synthesize findings into comprehensive reports highlighting actionable insights to stakeholders’ needs 
• Present actionable recommendations to optimize business outcomes 

• Minimum 2+ years of hands-on experience in data science 
• Proficiency in Python, R, and SQL for data analysis, model development, and data retrieval 
• Strong knowledge of advanced statistical methods, including regression, clustering, fusion, and hypothesis testing 
• Experience with cloud-based data platforms (e.g. AWS and Azure) for data processing and deployment 
• Proven ability to handle large datasets, with expertise in database structures and performance optimization 
• Advanced data visualization skills using tools like Matplotlib, Seaborn, ggplot2 or Tableau to communicate insights effectively 
• Strong problem-solving skills with a focus on developing actionable recommendations 
• Excellent communication and presentation skills to convey findings to diverse audiences 

Our Benefits

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

About NIQ

NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™. NIQ is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population.

For more information, visit NIQ.com

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Our commitment to Diversity, Equity, and Inclusion

NIQ is committed to reflecting the diversity of the clients, communities, and markets we measure within our own workforce. We exist to count everyone and are on a mission to systematically embed inclusion and diversity into all aspects of our workforce, measurement, and products. We enthusiastically invite candidates who share that mission to join us. We are proud to be an Equal Opportunity/Affirmative Action-Employer, making decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability status, age, marital status, protected veteran status or any other protected class. Our global non-discrimination policy covers these protected classes in every market in which we do business worldwide. Learn more about how we are driving diversity and inclusion in everything we do by visiting the NIQ News Center: https://nielseniq.com/global/en/news-center/diversity-inclusion