Principal Client Partner
Infillion
| Company | Infillion |
| Category | Sales |
| Location | Chicago |
| Remote | Hybrid |
| Employment | Not stated |
| Level | Senior |
| Salary | Not stated by the employer |
| Posted | 29 May 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (greenhouse) |
Description
About the Company
Infillion is the first fully composable advertising platform, built to solve the complexity, waste, and opacity in the digital media ecosystem of the last decade. Born from $750 million in investment and the unification of category-defining technologies, including MediaMath, TrueX, Gimbal, Drawbridge, and most recently Catalina, Infillion engineered these powerful assets into scores of interchangeable, agentic-ready components.
Infillion provides a single, flexible infrastructure that serves media buyers, tech decision-makers, and media sellers. Whether through white-glove managed service, self-service control, or API-based automation, Infillion empowers businesses to execute their unique strategies with zero-hop efficiency, proprietary AI logic, and radical data transparency. Headquartered in New York City, with employees located globally in the US, Costa Rica, and Europe, Infillion powers the world's leading brands, agencies, and platforms. Learn more at www.infillion.com.
About the Role
The Principal Client Partner role will be tasked with selling a suite of connected commerce advertising solutions, from performance-driven advertising campaigns with data and location services to value-exchange engagement ads on CTV to brands and agencies in the Midwest. Experience and agency/client relationships within key markets in the area are important to succeed in this role, as well as an express ability to demonstrate recent business successes in this location.
You will be a key member of a fast-paced and quickly growing sales team. Your focus, and that of your team, is the positioning, presentation, and execution of partnerships leveraging Infillion’s unique value-exchange engagement ads as well as location technology and media execution platform.
What you will be doing:
Leveraging your existing relationships with advertising agencies, brands, and clients to increase revenue through the presentation of Infillion’s services and suite of product solutions
Establish deep relationships with direct clients and agencies for the largest advertisers in region
Evangelize the Infillion value proposition and solution sell Infillion offerings by honing in on client specific needs, challenges and trends
Partnering with the Sales Planning team to create proposals in response to RFPs
Monitoring clients’ campaign performance through a partnership with the Account Management Team
Managing the pipeline of activity and providing regular status updates
Work with a broad range of internal teams (Account Strategy, Marketing, Legal, Integration and Traffic teams) to support the sales efforts.
Utilizing Infillion's sales methodology from proposal to close
Evangelizing Infillion in market and actively sharing materials on thought-leadership
Representing Infillion’s value proposition within the advertising community
Who you are:
A tenacious sales professional: You love the thrill of landing a new account or sale and consistently strive to exceed expectations.
A well-connected social butterfly: The only thing that grows faster than your closed sales is your Rolodex. Your relationships span beyond whatever company you are with or product you are selling.
A mover and a shaker: You’re two steps ahead of the person who’s two steps ahead, and you’ve probably already started your 30-60-90 day sales-plan
What you have:
3+ years of experience selling managed service programmatic media within the Midwest region
Ability to speak to strong established Midwest brand and agency relationships, with experience building and growing these relationships over time
Thorough understanding of the digital media landscape
Consultative selling, value selling, and negotiation skills
Working understanding of CRM tools such as Salesforce
Superior client facing presentation skills, using data to effectively tell a clear story
Experience with managed-service or
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