Ad Effectiveness Lead, Sell-side Platform 

London | Up to £85,000 per annum

Join a global AdTech leader driving advanced media measurement across top publishers and platforms. You’ll lead campaign studies that fuel smarter advertising decisions across EMEA.

This is the perfect role for a measurement expert who can turn data into clear, commercial insights and work directly with major sell-side clients to prove effectiveness and shape strategy.

What You’ll Do:

• Run end-to-end campaign measurement projects (brand/sales lift, reach, etc.)

• Translate complex data into strategic insights for publishers & platforms

• Champion adoption of measurement tools across EMEA

• Influence product innovation with client feedback

• Collaborate with Sales, Product, and Marketing Science teams

What You Bring:

• 5+ years in digital media measurement (agency, platform, brand, or vendor side)

• Strong grasp of ad effectiveness metrics and study design

• Skilled in R, SQL or Python (or closely familiar with analytics tools)

• Confident communicator with regional client experience

• Bonus: background in streaming/CTV or video analytics