Senior Manager, Client Delivery

Who We Are:

At VML, Human First is our guiding creative philosophy: we create value for people first, knowing this drives authentic and sustainable brand impact. We are a growth partner that is part creative agency, part consultancy, and part technology powerhouse. We connect Brand Experience, Customer Experience, and Commerce to craft unified, emotionally resonant consumer journeys.

Our 26,000 people across 50-plus markets are the heart of our company. Their perspectives, local expertise, and cultural insights drive creativity and innovation, making talent our most critical competitive advantage.

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 Theory employee, you will need to demonstrate behaviors that support our values. Our values are Positive, Act with Consideration, and Make it Better. You can read more about our values here:

We are looking for a Senior Client Success Manager with deep expertise in Marketing Mix Modeling (MMM) and econometrics to lead strategic client engagements and maximize business impact from our analytics solutions. This senior role requires a unique blend of relationship management, commercial acumen, and technical fluency in econometric modeling to guide clients' marketing investment strategies and demonstrate value.

The Client Success Senior Manager will report to the Client Success Senior Director and work closely with the client leadership team to ensure optimal delivery and satisfaction. The ideal candidate should have a minimum of 5 years of experience in project management, client relationship management, and data analytics. The Client Success Manager should be able to work in a fast-paced environment, manage multiple projects simultaneously, and prioritize tasks effectively.

They should have excellent problem-solving skills, attention to detail, and a proactive approach to identifying and resolving issues. The successful candidate should have a deep understanding of the Marketing Effectiveness and analytics industry and be up to date with the latest trends and developments. They should be able to interpret data and analytics insights and present them in a clear and concise manner to clients.

The Client Success Manager should be a team player and possess effective communication and interpersonal skills to collaborate effectively with cross‑functional teams.

• Project Management:
  Ensures projects run to time and scope, especially if responsible for specific elements (e.g., specific brands, markets).
• Quality Assurance:
  Follows quality assurance process to ensure results are right first time, and implements any improvements to the process.
• Data & Analytics:
  Uses data and analytics skills to create a strong overarching story. Will be expected to present to a variety of clients.
• Storytelling: A good data storyteller who can explain complex insights at a simple, impactful level to a CMI / Analytics audience.
• Gain Theory Interactive:
  Understands what Gain Theory Interactive shows and can guide the client through the platform and its various modules.
• Operational Excellence:
  Follows GT Operational Excellence design to the letter and highlights any places where the process could be improved.

• Client Growth:
  Looks…