Buyer Development Manager

Index Exchange•New York, NY

About The Position

Index Exchange is looking for a Buyer Development Manager to help lead and grow strategic holding company relationships in the US. Index is financially strong, independent, and in growth mode, with modern technology and no legacy platform drag. We are investing heavily in the areas buyers care about most, including streaming, sell-side decisioning, and Marketplace innovation, while staying grounded in transparency, neutrality, and partnership. In this role, you will own day-to-day commercial relationships across one or more agency holding companies, working across operating agencies and buying teams to drive revenue growth and product adoption. You will play a key role in executing holding company strategy, building senior agency relationships, and delivering measurable commercial outcomes. This role blends commercial ownership with consultative engagement and plays a key role in shaping the buyer experience.

Requirements

6–9 years of experience in digital media with strong knowledge of the programmatic advertising ecosystem (SSP, DSP, exchange, PMP, agency trading desk, ad server, etc.)
Proven success in buyer-facing commercial or account management roles within ad tech or programmatic environments
Experience working with or within agency holding companies or large agency groups
Demonstrated ability to manage a book of business and deliver against revenue and adoption goals
Confidence presenting technical concepts and commercial recommendations to agency stakeholders

Responsibilities

Own and manage relationships across one or more agency holding companies in the US
Drive revenue growth and increased adoption of Index’s buyer-facing products across operating agencies and buying teams
Execute holding company and agency-level strategies through QBRs, activation plans, and ongoing engagement
Act as a consultative partner on SPO, marketplace quality, curation, data activation, and supply innovation
Multi-thread relationships across traders, programmatic leads, and senior agency stakeholders
Identify and develop new commercial opportunities within existing holding company relationships
Partner closely with Buyer Account Management teams to activate agency strategies, deals, and marketplace initiatives
Share buyer feedback and market insights internally to support Product and GTM priorities
Track buyer trends and performance to inform planning and account strategy
Represent Index in agency meetings and relevant industry forums

Benefits

Comprehensive health, dental, and vision plans for you and your dependents
Paid time off, health days, and personal obligation days plus flexible work schedules
Competitive retirement matching plans
Equity packages
Generous parental leave available to birthing, non-birthing, and adoptive parents
Annual well-being allowance plus fitness discounts and group wellness activities
Employee assistance program
Mental health first aid program that provides an in-the-moment point of contact and reassurance
One day of volunteer time off per year and a donation-matching program
Bi-weekly town halls and regular community-led team events
Multiple resources and programming to support continuous learning
A workplace that supports a diverse, equitable, and inclusive environment