Key Account Manager

Posted:
6/8/2026, 6:30:49 PM

Location(s):
England, United Kingdom ⋅ Greater London, England, United Kingdom

Experience Level(s):
Mid Level ⋅ Senior

Field(s):
Sales & Account Management

Workplace Type:
Hybrid

At Quantcast, we don't just build advertising technology, we revolutionize how it works. Our AI-powered Demand Side Platform (DSP) connects the world's most ambitious marketers with their ideal audiences across the open internet, delivering results that actually move the needle. Since 2006, we've been the industry's trailblazer, launching the first AI-powered measurement platform for publishers and the first AI-driven DSP. Our AI doesn't just optimize—it delivers the measurable outcomes that matter most to our clients, giving them the competitive edge they need in a crowded marketplace. Ready to join the team that's defining the future of digital advertising?

Key Account Managers ensure the success of Quantcast's top, key clients, delivering best in class advertising solutions and customer support in order to exceed expectations of retaining and growing the business. You will cultivate deep partnerships with top client stakeholders and manage both external client strategy and communications as well as influence internal teams throughout the organization. 

As a Key Account Manager, you are responsible for scaling existing accounts and consulting with senior stakeholders to understand and uncover their business needs and how Quantcast's products can grow their business. This role liaises with Engineering and Product teams to deliver client feedback that contributes to product development at Quantcast. 

Finally, you'll take full ownership for longer term strategy against both internal goals and external client business, and are accountable for customer insights, strategy and recommendations that lead to significant scaling opportunities and upselling of new products and services.

At Quantcast, we craft offers that reflect your unique skills, expertise, and geographic location. On top of a competitive salary, this position includes a performance bonus, equity, and a comprehensive benefits package. For more details, visit our Careers Page and see how we support our team. We are headquartered in San Francisco with offices around the world. Quantcast is an Equal Opportunity Employer. Please see the Applicant Privacy Notice for details on our applicant privacy policy. Join the team that unlocks potential.