Senior Manager, Marketing Effectiveness

eBay•Toronto, ON

7d•CA$121,200 - CA$161,800•Onsite

About The Position

eBay is a global commerce leader that connects millions of buyers and sellers around the world. We are looking for an intellectually curious, business-savvy, and analytical leader with a deep understanding of marketing efficiency to join us as the Senior Manager, Marketing Efficiency. This key position makes you the main source on "what worked and why." You will analyze beyond simple data to uncover deep, causal insights about how marketing spending impacts brand strength and business development. Based in Toronto and reporting to the Head of Marketing Efficiency, you will transform how eBay assesses marketing performance within a privacy-first, technology-supported framework. You will also assist in moving from retrospective reporting to predictive and advisory decision tools for our largest markets worldwide.

Requirements

7+ years of experience in Marketing Efficiency, Brand Insights, or Marketing Analytics, with a strong focus on post-launch measurement and brand health tracking.
Deep proficiency in marketing measurement methodologies, including incrementality testing, causal inference, and interpreting Econometric/MMM outputs.
Outstanding communication skills with a "consultative" approach, capable of influencing VP-level collaborators and driving consensus in a matrixed global environment.
Proven track record of managing campaign measurement across diverse international markets and challenging established methodologies and driving adoption of new ones.
A master at "connecting the dots" between brand sentiment data and hard commercial outcomes to build persuasive arguments.
Bachelor’s degree or Master’s degree or equivalent experience in a quantitative or business field (Economics, Statistics, Marketing Science, or similar).
A resilient "can-do" attitude with the ability to navigate ambiguity and manage fast-paced delivery timelines without sacrificing attention to detail.

Responsibilities

Lead the end-to-end measurement and analysis for all major global campaigns, providing a definitive assessment of performance against brand benchmarks and business goals across our global markets.
Partner with the team to contribute to the global brand and reputation tracking program.
Integrate findings from paid, earned, and owned channels to provide a complete view of eBay’s market position and sentiment.
Embed measurement into campaign planning and optimization, not just post-launch evaluation.
Partner with Data Science, Media, and Finance teams to support broader findings from Marketing Mix Modeling (MMM) and Multi-Touch Attribution (MTA), ensuring post-launch insights inform future budget allocations.
Establish and maintain a unified benchmark hierarchy and measurement "playbook" that ensures consistent reporting and accountability across regional marketing teams.
Reimagine insight generation using AI to move from workflows led by analysts to scalable, always-on intelligence systems.
Synthesize complex performance data into compelling, executive-ready narratives that go beyond "what happened" to explain the "so what" and "what’s next" for senior leadership.
Lead the development of automated, self-service reporting tools (e.g., Tableau, Looker) to provide collaborators with real-time insight into campaign efficiency and brand health.
Act as the primary lead for external measurement partners and research agencies, ensuring they deliver high-quality, actionable insights that meet eBay’s rigorous analytical standards.