ML Data Scientist

Company Description

NielsenIQ is a consumer intelligence company that delivers the Full View, the world’s most complete and clear understanding of consumer buying behavior that reveals new pathways to growth. Since 1923, NIQ has moved measurement forward for industries and economies across the globe. We are putting the brightest and most dedicated minds together to accelerate progress. Our diversity brings out the best in each other so we can leave a lasting legacy on the work that we do and the people that we do it with. NielsenIQ offers a range of products and services that leverage Machine Learning and Artificial Intelligence to provide insights into consumer behavior and market trends. This position offers the opportunity to apply the latest state-of-the-art in AI/ML and data science to global and strategic projects.

Job Description

NielsenIQ’s Innovation Team is expanding its AI capabilities and is now hiring an AI/ML Data Scientist for the Core Models team, a multidisciplinary team working on AI areas such as recommender systems, extreme classifiers, Large Language Models (LLMs), among others. In this role, you will stay current with AI research (focusing on NLP, but also on Computer Vision and other fields), implement state-of-the-art algorithms in real-world, large-scale problems, and propose novel ideas.

Your main responsibilities include creating high-quality datasets for training and fine-tuning Custom Models, LLMs, and Recommender Systems, and training these models to analyze the impact of data variations on performance. You will design and implement scalable data pipelines supporting all R&D stages, including fine-tuning and reinforcement learning alignment, ensuring robustness, safety, and alignment of AI models. You will also have opportunities to produce scientific content such as patents or conference/journal papers.

Job Responsibilities:

• Develop and apply data pipelines with minimal supervision, ensuring simplicity, scalability, reproducibility, and maintainability.
• Train Deep Learning (Transformer) models and analyze data version impacts.
• Conduct feasibility studies and data analysis to identify optimal solutions.
• Drive innovation and contribute to custom Large Language Models development.
• Communicate results effectively to technical and non-technical audiences.
• Collaborate as part of a team, fostering motivation and effective relations.

Qualifications:

• Master's degree in computer science or related numerate discipline.
• Minimum of years’ experience in a relevant field.
• Strong background in computer science, linear algebra, probability.
• Extensive experience in Machine Learning and Deep Learning, especially Transformers.
• Proven experience with NLP and Large Language Models.
• Experience building scalable data pipelines and ETLs.
• Ability to understand scientific papers and develop executable ideas.
• Track record of innovation, patents, or publications in AI.
• Proficiency in Python, SQL, PySpark, Databricks, Pandas/Polars, PyArrow, PyTorch, Huggingface, git.
• Proactive, curious, persistent attitude.
• English proficiency at B2 level or higher.
• Interest in working within a diverse, international team and inclusive culture.

Preferred Qualifications:

• PhD in NLP, Data Science, or related fields, with specialized coursework.
• Experience with large real-world datasets and scalable ML solutions.
• Experience in e-commerce, retail, FMCG, or Consumer Insights.
• Familiarity with Agile methodologies (SCRUM, SAFe).

Benefits:

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

About NIQ

NIQ is the world’s leading consumer intelligence company, delivering comprehensive insights into consumer behavior and growth pathways. In 2023, NIQ merged with GfK, expanding its global reach. With operations in over 100 markets, NIQ covers more than 90% of the world’s population, providing advanced analytics through state-of-the-art platforms. For more information, visit NIQ.com.

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Diversity, Equity, and Inclusion

NIQ is committed to reflecting the diversity of its clients and markets, embedding inclusion into all aspects of its work. We invite candidates sharing this mission to join us. We are an Equal Opportunity Employer, making decisions without regard to race, gender, religion, or other protected classes. Learn more at: https://nielseniq.com/global/en/news-center/diversity-inclusion