John Halley

Advisor at TWG Global

Building programmatic and AdTech capabilities across major media agencies.

OperatorNew York, New York, United States20+ years in industry

Last updated Jun 6, 2026 by the ATDb Editorial Team

Bio

John Halley is an Advisor at TWG Global. He has held roles at Paramount+ and Paramount Advertising as of January 2025. He oversaw programmatic and AdTech capability buildout across Starcom, Zenith, and Spark Foundry.

Previous Roles

President, Advertising

Paramount (2022–2026)

Chief Operating Officer, Advertising

Viacom (2013–2019)

SVP, Ad Sales Finance & Operations

Viacom (2007–2013)

Expertise

Programmatic AdvertisingMedia Buying and PlanningData-Driven MarketingIdentity ResolutionAdTech PartnershipsAudience TargetingMedia Agency OperationsMarketing Measurement

Notable Achievements

Oversaw programmatic and AdTech capability buildout across Starcom, Zenith, and Spark Foundry

Speaking Topics

Future of Media BuyingProgrammatic Advertising at ScaleData and Identity in a Privacy-First WorldAdTech and Agency Transformation

Board Memberships

OpenAP (former Chairman)IAB (former Chair)VABBlockgraph

Connections