Sr. Manager, Strategic Partnerships & Agency Development

Focus: Agency Partnership Execution, Account Management, and Enablement As Big Happy enters its next phase of growth, we are adding a dynamic, execution-focused leader to support our Strategic Partnerships division. Reporting directly to the VP of Strategic Partnerships & Agency Development, this role is critical to operationalizing our agency acceleration and growth strategies. The ideal candidate acts as the "connective tissue" and daily engine of the department - translating high-level agency strategy into tangible pipeline growth, managing mid-to-senior level agency relationships, and ensuring cross-functional alignment across Sales, Product, and Marketing.

This is a builder role designed for a high-performing manager ready to scale our footprint and directly support leadership in turning Big Happy into a primary execution partner for major holding companies, independents, and specialty shops. Leadership Support & Execution: Act as the primary strategic supporter to the VP, operationalizing the overarching agency partnership strategy and managing daily workflows to drive business objectives. Account & Relationship Management: Cultivate and maintain deep, daily relationships with core leaders, media planners, supervisors, and key influencers across holding companies and independent agencies.

Cross-Functional Collaboration: Partner closely with internal Sales, Client Services, Product, and Marketing teams to track deliverable timelines, align agency feedback with product roadmaps, and support revenue-driving initiatives. Enablement & Education: Own the development and rollout of partner-facing toolkits, POVs, playbooks, and case studies. Facilitate education and scaled learning sessions to ensure agency teams fully understand Big Happy’s unique value proposition.

Pipeline & Performance Tracking: Monitor, analyze, and report on agency partnership performance, spend adoption metrics, and joint business plan (JBP) progress to internal leadership. Business Development Support: Identify organic growth opportunities within existing agency accounts, support commercial deal structuring (such as endeavors or JBPs), and assist in pitches for net-new agency access. Agency Development & Enablement Execute Big Happy’s agency partnership framework across holding companies, independents, and specialty shops.

Position Big Happy as a seamless, day-to-day extension of agency teams for DOOH, high-impact mobile execution, and offsite retail media. Coordinate GTM materials and lead training efforts to unlock net-new agency access and support Sales teams in deeper account penetration. Bachelor’s degree or equivalent work experience.

5+ years of professional experience specifically within agency development, retail media, or broader ad tech ecosystem management. Exhibit a natural "builder" mentality with a strong focus on seamless execution and independent workflow management. Deeply understand the nuances of agency operating structures, holding company dynamics, and contemporary media activation strategies.

Demonstrate a history of fostering account growth and the confidence to present effectively to mid-and-senior-level external agency leadership. Communicate with clarity, effectively distilling complex technical platform features into tangible business value for media planners and strategists. Strong analytical skills with an ability to leverage performance metrics and spend data to drive joint business objectives.

Benefits

, including Healthcare, Dental, and Vision Big Happy-provided laptop Participation in Big Happy’s stock program Paid Parental Leave Team Happy camaraderie—celebrating wins, learning from challenges, and fostering continuous career growth A workplace culture where you can be yourself, contribute meaningfully, and be valued for your impact