Buyer Development Director at Index Exchange – New York, New York

About Index Exchange:Index Exchange is a global advertising supply-side platform enabling media owners to maximize the value of their content on any screen. As a trusted partner and ally, we connect leading experience makers with the world’s largest brands to ensure a quality experience for consumers.
We’re a proud industry pioneer with over 20 years of experience accelerating the ad technology evolution. With our radically transparent business practices and dedication to total market efficiency, we’re committed to upholding the integrity of the programmatic ecosystem at large.
What’s it like to work at Index?Index is an exciting and fast-paced place to work. You'll be able to feed your ambition, lean into trust and transparency, and feel genuine support from your colleagues. We’re built on our core values and live them each day. They're‌ not just buzzwords.
We pride ourselves on our independence and openness, not only in our technology, but in our teams, too. Our diverse and inclusive culture celebrates how we can leverage our unique differences to help drive Index forward.
We have more than 550 Indexers around the globe dedicated to building a safe and transparent marketplace that provides a trusted experience for consumers, and we’re looking for talented professionals to help take us to the next level.
Are you ready to join the programmatic evolution?Index Exchange is looking for a Buyer Development Director to 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 moving fast in the areas buyers care about most, including streaming, sell-side decisioning, and Marketplace innovation, while remaining grounded in transparency, neutrality, and partnership. In this role, you will own whole-company relationships across major agency holding companies, setting strategy and driving consistent execution across operating agencies and buying teams. You will drive revenue growth through product adoption and build long-term relationships and partnership value, while acting as the senior buyer voice within Index. This role sits at the intersection of commercial leadership, buyer strategy, and marketplace innovation. This is your opportunity to help us define the next phase of buyer strategy at Index Exchange.
What we’re looking for:

• A senior commercial leader with deep experience working across agency holding companies
• Strategic thinker who can set vision and translate it into execution at agency and team level
• Driven ownership of revenue growth, product adoption, and partnership outcomes across complex organizations
• Strong influential leadership skills to steer commercial relationships and represent the buyer POV across product and GTM teams within Index
• Confident communicator who can build relationships and engage with senior leaders and stakeholders
• Technically credible with strong programmatic and marketplace knowledge

Here’s what you’ll be doing:

• Own and lead whole-company relationships with major agency holding companies in the US
• Define and execute holding company strategy, aligning Index’s Marketplace, products, and supply innovation to buyer priorities
• Drive revenue growth and increased adoption of Index’s buyer-facing products across operating agencies and buying teams
• Act as a trusted advisor on SPO, marketplace quality, curation, data activation, and evolving buying models
• Set executive alignment through strategic planning sessions, QBRs, and senior stakeholder engagement
• Represent the buyer perspective internally, influencing Product roadmap and go-to-market decisions
• Identify new commercial opportunities across holding companies, operating agencies, and emerging buying models
• Partner closely with Buyer Account Management teams to ensure consistent execution and impact across accounts
• Track buyer and market trends and provide clear insights to senior Index leadership
• Represent Index at industry events and senior partner forums

Here's what you need:

• 8+ years of experience in digital media with deep knowledge of the programmatic advertising ecosystem (SSP, DSP, exchange, PMP, agency trading desk, ad server, etc.)
• Proven success in senior, buyer-facing commercial roles working with agency holding companies
• Your network boasts deep relationships and demonstrates your comfort navigating complex commercial models through strong agency and brand connections
• Experience selling into teams at various levels, you understand what each buyer cares about
• Strong track record of driving revenue growth, product adoption, and strategic partnerships
• Confidence delivering technical and strategic recommendations to senior stakeholders
• A track record of leading through strategy and influence, not through direct reports

Why you’ll love working here:

• 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 – learn more here

Equal employment opportunityAt Index Exchange, we believe that successful products are built by teams just as diverse as the audience who uses them. As such, we are committed to equal employment opportunities. We celebrate diversity of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, or veteran status. Additionally, we realize that diversity is deeper than any status or classification—diversity is the human experience. For those who show grit, passion, and humility—Index will welcome you.
Accessibility for applicants with disabilities Index Exchange welcomes and encourages individuals with disabilities to apply to work with us. If you require an accommodation, please share the details of your request and any information how we can assist you with the hiring recruiter when they contact you. Index Exchange will make reasonable efforts to ensure accommodation requests are met throughout the recruitment process.
Index everywhere, Index anywhereOur corporate headquarters are in Toronto, with major offices in New York, Montreal, Kitchener, London, San Francisco, and many other global cities. As a major global advertising exchange, we are committed to operating as a tightly knit global team and embracing and empowering talent wherever our colleagues may be.