Senior Manager, Data (Media)

Who we are & what we do:

Gain Theory is a leading global marketing effectiveness and foresight consultancy. We combine quality data, proprietary technology, and advanced analytics to give our clients the confidence to make better informed investment decisions that drive growth.

Growth is the defining characteristic of successful organizations, and Gain Theory’s vision is to accelerate growth for ambitious brands. We define ambitious brands as those that generate earnings/profits above the industry average. We deliver:

• Data strategy, harmonization, and visualization.
• Advanced analytics and modeling, including MMM, attribution and unified measurement, testing, segmentation, behavioral sciences, choice analytics, simulation, war gaming, and forecasting.
• High-touch consultancy that includes bespoke roadmaps, training and education, industry benchmarking, and activation planning.

At Gain Theory, we love accelerating growth for ambitious brands and people. As a Gain Theorist, you will need to demonstrate behaviors that support our values.

Our values are: Be Curious, Be Positive, Act with Consideration, and Make it Better. You can read more about our values here: www.gaintheory.com/our-culture-people-and-value

What you’ll do:

As a Senior Data Manager, you’ll play a pivotal role at the intersection of clients, teams, and technology. You’ll take ownership of key client relationships, lead and mentor a talented data team, and act as the go-to technical expert for both your direct reports and peers across the business. Reporting to the Director of Data within your client squad, you’ll help shape how data drives smarter decisions, stronger performance, and greater innovation for some of the world’s leading brands. Beyond day-to-day delivery, you’ll also help chart the future of how Gain Theory harnesses data—pushing the boundaries of automation, scalability, and insight to fuel the next generation of data-driven growth.

Key Responsibilities:

• Accountable for designing, delivering, and maintaining all aspects of the data management process for any assigned clients
• Direct oversight of, management of, and full accountability for work delivered by all junior data resources (some may be in other global offices/time zones) for any assigned clients
• Balancing getting the data perfect or in very good modeling shape versus the demands of the clients around what is required
• Identifying, building, and automating data collection solutions for various data sources including ad servers, social networks, DSPs, search engines, etc.
• Building relationships and owning communications with key data owners and contacts to ensure timely delivery of accurate, clean data
• Project ma