Ecosystem Development Jobs in Connecticut (NOW HIRING)

Senior Director, Inventory Partnerships
Position Description
Think of this role as owning the "pipe system" that connects the client to a vast ecosystem of publishers, networks, and platforms - and being accountable for how well it performs.
Our client is seeking a Senior Director of Inventory Partnerships to strengthen and expand supply partnerships, deepen publisher and platform relationships and build a best-in-class supply ecosystem.
This senior leader will combine deep programmatic expertise with strong relationship-building instincts to cultivate durable supply alliances that unlock differentiated inventory access and long-term value for the client.
The ideal candidate brings:
• Technical depth (deal ID troubleshooting, SPO strategy, rate negotiation)
• Strong publisher relationships
• The commercial acumen to adapt supply-side solutions to the client's principal-based buying model - ensuring every partnership drives maximum scale, quality, and profitability.
Responsibilities
Supply Partnership Development & Publisher Relations
• Own and expand direct publisher relationships, cultivating preferred buyer status with key media owners and developing co-investment frameworks that unlock first-look and exclusive inventory opportunities.
• Identify, negotiate, and onboard new supply partners - including emerging publishers, niche SSPs, CTV/streaming platforms, and data-enriched inventory sources - that expand competitive differentiation.
• Manage and grow strategic supply agreements with SSPs and platform partners, ensuring preferred access to premium, brand-safe inventory across formats and channels.
• Serve as the senior point of contact for supply-side relationships, representing the company at publisher summits, SSP partner days, and industry forums to strengthen partnerships and stay ahead of ecosystem developments.
Supply Operations & Performance
• Lead supply path optimization (SPO) strategy, evaluating and rationalizing supply partners based on quality, commercial arrangements, and performance to ensure efficient, profitable and accountable inventory access.
• Build and maintain a rigorous partner evaluation framework - tracking inventory quality, scale, efficiency and overall profitability
• Serve as the internal technical expert on deal structures, troubleshooting deal ID issues, PMP/PG execution, and header bidding configurations in close collaboration with trading and ad ops teams.
• Develop data-driven frameworks to assess supply path quality, working directly with partners to improve targeting precision and reduce supply chain inefficiency.
Principal-Based Buying & Commercial Strategy
• Adapt supply-side strategies to support principal-based buying model, structuring supply agreements and commercial terms that maximize margin, scale, and inventory differentiation within this framework.
• Identify opportunities to deepen commercial relationships with supply partners that create durable competitive advantages.
• Partner with internal stakeholders (trading, client media directors, finance) to align supply strategy with client campaign needs and broader business objectives.
Revenue Generation & Business Growth
• Lead commercial development of all offerings, positioning the capability as a core revenue driver across existing and prospective clients.
• Contribute to overall company strategy by advising on supply ecosystem developments, shaping publisher roadmap and ensuring supply infrastructure scales to meet growing client demand.
Skills and Qualifications
Technical & Expertise
• Deep expertise across the programmatic supply ecosystem - SSPs, publisher ad servers, PMPs, PG deals, and header bidding - with the ability to evaluate partner capabilities and structure deals that maximize inventory quality, access, and efficiency.
• Familiarity with emerging direct supply paths (retail media, CTV/streaming, curated marketplaces) and the ability to assess and integrate new inventory sources as the ecosystem evolves.
• Commercial mindset with experience structuring supply agreements within a principal-based buying model, including volume deals, data-sharing arrangements, and margin-aware inventory strategies.
Professional Experience
• 7-10 years of experience in digital advertising, with meaningful time spent on the supply side - at a publisher, SSP, ad network or in a publisher/platform partnership role.
• Proven track record of building and managing supply partnerships, negotiating programmatic deals, and delivering measurable improvements in inventory quality, access and performance.
• Experience in a senior leadership or management role.
• Bachelor's degree required.
• Must have the legal right to work in the United States.
NOTE: When not on client calls/client meetings,INve, this role requires five days/week in the headquarter office (greater New York City area).
Base salary and commission structure is commensurate with experience.
Equal Opportunity Employer / Disabled / Protected Veterans
The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf
The pay transparency policy is available here:
https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf
For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.
We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.
AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf
We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.
Additional Skills
(none specified)
AllSTEM Representative Contact Info
Account Executive:
Fischer
Branch Phone:
(909) 244-1777
Location:
Ontario, CA