Client Success Specialist

Department: Sales & Account
Location: London, Hybrid
Updated on: March 21, 2023

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Client Success Specialist

Client Success Organisation


About Us:

MediaMath’s mission is to help innovative marketers delight their customers and drive real business outcomes. Over 9,500 marketers in 42 countries use our enterprise solution to reach the right user with the right message for the right price, wherever they are. These are the leading brands and agencies in the world who rely on MediaMath to provide technology, services and leadership to help them continue to transform their marketing practices and compete in a quickly changing industry.

Founded in 2007 as a pioneer in “programmatic” advertising, MediaMath has been recognized as a leader in the space in four independent evaluations over the last two years. MediaMath has offices in 16 cities worldwide and is headquartered in New York City.


Key Responsibilities

We are seeking a thoughtful, high-impact contributor with exceptional analytical, communication, program management, and client management skills to join our Client Success team! The Client Success (CS) team serves as the primary point of contact for service delivery across the Client Success organization, as well as the main conduit back into the Partnership Development team on sales. They diagnose and coordinate and create with necessary MediaMath resources in order to achieve the client’s goals.

In partnership with the Director Client Success and Pod Lead, the Client Success Lead/ Programmatic Analyst contributes to the execution of programmatic campaigns and evolution of strategic/technical roadmaps for high-value clients. You will engage with executive-level contacts (cross-functional) at the agency, and be expected to establish, develop, and deepen the relationships that will allow our partnership to grow.


You will:

  • Support the Director Client Success/Client Success Lead in owning and developing strong mid-to-higher-level relationships with one of MediaMath’s largest direct clients and their agency and technology partners
  • Oversee a portfolio of accounts and ensure the activation against the strategic account plan
  • Project manage client onboarding and implementation process including product, channel and partner activation, campaign launches, and ad-hoc projects
  • Recommend and create media plans as well as coordinate internally for campaign activation, performance and analysis.
  • Coordinate resource management and allocation and control activities across teams to ensure projects are delivered on-time and on budget
  • Serve as the main point of contact for delivery and activation questions from the client and issue resolution as needed. (i.e. communication and expectation setting, raising tickets)
  • Help facilitate change management between self and managed service models
  • Understand and communicate relevant new products, features, and capabilities as they become available and ensure successful deployment and activation with your clients 
  • Create and streamline processes and workflow
  • Coordinate and lead client training on new product and features with Trading team.


You are:

  • Able to communicate effectively with senior executives at Holding Companies/Global Fortune 500 brands
  • Personable, charismatic, and positive
  • Ability to present and express yourself in a clear, confident manner
  • Detail orientated and analytical with a process driven approach to client and activity management
  • Experienced in managing and mediating multiple stakeholders


You have:

  • 2 - 3 years’ experience working within the Programmatic industry specifically within a Client Services/Account Management team, preferably within an Agency Holding company
  • Built mid to senior-level relationships with key strategic partnerships across large holding companies, independent agencies, and re-sellers
  • Proven ability to set account strategy and drive revenue growth across assigned partnerships
  • Excellent listening, negotiation, presentation, written and verbal communication skills
  • Strong analytical skills. Must be comfortable with MS Excel, data analysis, and internet technologies


Why We Work at MediaMath

We are restless innovators, smart, passionate and kind.  At the heart of our culture are three values that provide a framework for how we approach our work and the world: Win Together, Obsess Over Growth, and Do Good, Better. These values inform how we energize one another and engage with our clients. They get us amped to come to work

Founded in 2007 as a pioneer in "programmatic" advertising, MediaMath is recognized as a Leader in the Gartner 2020 Magic Quadrant for Ad Tech and has won Best Account Support by a Technology Company for two years in a row in the AdExchanger Awards.

MediaMath is committed to equal employment opportunity. It is a fundamental principle at MediaMath not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related  medical condition, and other protected characteristic as established by law