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Sven Hagemeier

Thought Leader

Sven Hagemeier is a senior programmatic advertising executive at The Trade Desk, where he leads inventory partnerships across EMEA. He is widely recognized as a vocal advocate for the open internet, arguing that strong supply-side platforms (SSPs) are essential to a healthy, competitive digital advertising ecosystem. His thought leadership has been featured in industry publications and at major conferences including DMEXCO, where he has contributed to conversations around the future of programmatic supply chains and identity resolution in a post-cookie world. Hagemeier has built a career spanning over a decade in AdTech, with deep expertise in programmatic buying, publisher monetization, and the evolving identity landscape. At The Trade Desk, he has been instrumental in shaping how the company approaches supply-path optimization and publisher relationships across European markets. His public commentary frequently addresses the structural challenges facing the open internet and the importance of transparent, efficient programmatic infrastructure. Beyond his operational role, Hagemeier is an active industry voice on topics such as UID 2.0 adoption, the role of SSPs in a consolidated market, and the strategic positioning of the open internet against walled gardens. He contributes opinion pieces to outlets like The Current and participates in podcast discussions that shape industry thinking on programmatic strategy in EMEA.

Last updated Jul 10, 2026 by ATDb automated enrichment

Role
VP, Inventory Partnerships EMEA
Company
The Trade Desk
Based
Hamburg, Germany
Connections
1
Years in industry
15 years

Bio

Sven Hagemeier is a senior programmatic advertising executive at The Trade Desk, where he leads inventory partnerships across EMEA. He is widely recognized as a vocal advocate for the open internet, arguing that strong supply-side platforms (SSPs) are essential to a healthy, competitive digital advertising ecosystem. His thought leadership has been featured in industry publications and at major conferences including DMEXCO, where he has contributed to conversations around the future of programmatic supply chains and identity resolution in a post-cookie world. Hagemeier has built a career spanning over a decade in AdTech, with deep expertise in programmatic buying, publisher monetization, and the evolving identity landscape. At The Trade Desk, he has been instrumental in shaping how the company approaches supply-path optimization and publisher relationships across European markets. His public commentary frequently addresses the structural challenges facing the open internet and the importance of transparent, efficient programmatic infrastructure. Beyond his operational role, Hagemeier is an active industry voice on topics such as UID 2.0 adoption, the role of SSPs in a consolidated market, and the strategic positioning of the open internet against walled gardens. He contributes opinion pieces to outlets like The Current and participates in podcast discussions that shape industry thinking on programmatic strategy in EMEA.

Career

  • Senior Director, Inventory Partnerships EMEA

    The Trade Desk · prior to current role

  • Programmatic & Partnerships roles

    Various AdTech companies · pre-2015

Expertise & education

Expertise

Programmatic AdvertisingSupply-Path OptimizationInventory PartnershipsOpen Internet AdvocacyIdentity ResolutionUID 2.0SSP StrategyEMEA Digital Advertising

Speaking topics

The future of the open internetThe role of SSPs in programmatic advertisingCookieless identity and UID 2.0Supply-path optimizationProgrammatic advertising in EMEA

Recognition

Notable achievements

  • Published opinion pieces in The Current advocating for the structural importance of SSPs to the open internet
  • Featured speaker and podcast contributor at DMEXCO on programmatic strategy and the future of digital advertising
  • Led EMEA inventory partnership strategy at The Trade Desk during a critical period of identity and supply-chain transformation

Publications

  • Opinion: Why the Open Internet Needs Strong SSPs — The Current (The Trade Desk)
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