, OpenAP is a collective of innovators fundamentally changing how advertising is bought and sold across the premium video ecosystem. Together with our partners, we are powering a more sustainable model for ad-supported television by: Connecting advertisers with the precise audiences they want to reach Connecting publishers and platforms to enable holistic, cross-screen targeting and measurement Connecting people with relevant brand messages that enhance the viewing experience OpenAP is based in New York City and Los Angeles, with team members located across the United States.

About The Role

OpenAP is seeking a Client Success Manager to support and grow our agency and brand relationships across an assigned book of business. This role serves as a trusted advisor to clients, helping them successfully activate, manage, and measure audience-based advertising campaigns through OpenAP's platform and solutions. The ideal candidate is client-focused, proactive, highly organized, and committed to team success.

They are comfortable managing multiple priorities, collaborating cross-functionally, and communicating effectively with both internal and external stakeholders. This individual will play a critical role in delivering an exceptional client experience while helping drive customer satisfaction, retention, and long-term growth.

Responsibilities

Client Relationship Management Manage and grow relationships across an assigned portfolio of agency clients. Serve as the primary point of contact for clients throughout the campaign lifecycle, providing timely, professional, and solutions-oriented support. Build trusted relationships with client stakeholders while representing OpenAP's products and services.

Monitor account health, proactively identify risks and opportunities, and recommend solutions that support client growth. Support account retention, renewal, and upsell efforts through strong client engagement and partnership. Participate in client-facing activities, including in-person meetings and client entertainment for relationship building.

Campaign Execution Lead pre-campaign planning, campaign activation support, mid-campaign check-ins, and post-campaign reporting and analysis. Consult clients on audience activation strategies, campaign execution, and measurement best practices. Leverage campaign performance data and Platform insights to deliver strategic recommendations and optimize client outcomes.

Conduct client-facing OpenAP Platform demonstrations, reporting walkthroughs, and educational sessions to drive Platform adoption and utilization. Lead both in-person and virtual client presentations, business reviews, campaign recaps, and strategic discussions, translating campaign performance into clear, actionable recommendations. Cross-Functional Partnership Partner closely with Agency Development, Publisher and Audience Solutions, Product, Operations, and other cross-functional teams to deliver successful client outcomes.

Coordinate cross-functional alignment on client priorities, ensuring timely communication of updates, recommendations, insights, and next steps. Operational Excellence Maintain a high level of organization and follow-through across client requests, deliverables, and deadlines. Identify opportunities to improve client workflows, internal processes, and operational efficiency.

Team & Culture Foster a collaborative and growth-oriented team environment through knowledge sharing, continuous learning, and active participation in team discussions and initiatives. Must Haves Experience 4–7+ years of experience in Client Success, Account Management, or a related customer-facing role. Experience within advertising, media, ad technology, television, or streaming.

Strong professional presence to confidently engage with senior client stakeholders. Familiarity with advertising agency workflows and the campaign management lifecycle.