The Data Validation (DV) Specialist - Team Leader role involves ensuring data quality through checks and validation of market research datasets. The responsibilities include developing and executing scripts to identify data anomalies, collaborating with the Survey Programming team to improve questionnaires, and investigating data discrepancies. The role also involves providing guidance on quality assurance, automating validation processes, maintaining thorough documentation, and actively participating in team meetings. Additionally, the Team Leader will manage project pipelines, internal and external stakeholder expectations, and train and mentor junior team members.