Company description

About Us:

Zenith is the ROI Agency. Our more than 6,000 specialists across 95 markets offer unparalleled capabilities in Media, Data, Technology, Commerce and Content. We put effectiveness at the heart of our work to solve complex challenges, drive successful business outcomes, and grow our clients’ businesses. Zenith is part of Publicis Media, the media arm of Publicis Groupe.

Over the past year, Publicis Media has been transforming the way we do our business. From structuring our investment practice around data and digital to bringing our strategy, data sciences and research practice under one house, we’ve been shaping Publicis Media to be the media network of tomorrow. One that both you and I want to work at.

Publicis Media Canada is proud to be Great Places to Work™ certified and recognized with Best Workplaces™ for Today’s Youth. We provide continuing opportunities for career growth by fostering a diverse work environment that respects and supports individual contributions and opinions.

We also offer our employees market leading benefit and incentive programs. You’ll be provided with 3 weeks minimum vacation to start plus additional long weekend Publicis days, holidays closures, your birthday off, free Headspace memberships, wellness and technology credits, and a market leading savings plan.

We strive to provide what matters to you personally with the ability to choose and modify programs to suit your lifestyle

Overview

As an E-Commerce Manager, you will lead end-to-end retail media campaigns across platforms like Amazon, Walmart, and Instacart, owning strategy, activation, optimization, and performance. You’ll translate client briefs into full-funnel plans, drive data-led insights,



and present business reviews to senior stakeholders. The role also involves managing cross-functional teams and external partners while ensuring robust campaign governance, budgeting, and reporting. Additionally, you’ll mentor junior team members and establish best practices to improve performance and scalability.

Responsibilities

Campaign Leadership, Activation & Governance

- Lead activation and optimization across Amazon, Walmart Connect, Instacart Ads, Criteo, Uber Ads, DoorDash Ads, and Loblaws (MediaAisle).
- Own end-to-end campaign governance: creative requirements and QA, tracking/tagging (where applicable), flighting, budget allocations, pacing, keyword/bid/audience optimization, and ongoing brand safety + compliance checks.
- Establish clear performance guardrails (KPIs, learning agenda, optimization cadence) and ensure timely escalation of risks (inventory/OOS, pricing gaps, creative fatigue, tracking/reporting issues).

Strategy & Planning

- Translate client briefs into channel strategy and full-funnel plans: audience frameworks, targeting approach, measurement plan, and a structured testing roadmap (A/B tests, incrementality/lift, geo tests, creative tests).
- Partner with commerce/retail readiness stakeholders to improve conversion and efficiency: catalog hygiene, PDP content, reviews/ratings,



pricing and promo strategy, inventory checks, and OOS suppression.
- Build and maintain media plans and forecasts (scenario planning, and sufficiency planning where needed).

Reporting & Insights

- Own cross-platform reporting and insights across Walmart, Instacart, Criteo, Loblaws (MediaAisle) and other platform UIs; ensure clean data, consistent definitions, and executive-ready reports.
- Turn performance into a clear narrative: what happened, why it happened, what we learned, and what we’re doing next with actionable recommendations and quantified impact.

Client-Facing Ownership

- Lead client communications and governance: set expectations, manage approvals and timelines, and proactively communicate trade-offs, risks, and recommended actions to senior stakeholders.
- Present monthly business reviews and QBRs with a crisp story that ties media performance to business goals and identifies next-step decisions.

Partner & Cross-Functional Management

- Manage senior relationships with Amazon, Walmart, Instacart, Criteo, Loblaws, and other partners/vendors to unlock opportunities, troubleshoot issues, and drive performance improvements.
- Coordinate internally across analytics, creative, finance/billing, and account leadership to ensure operational excellence and scalable delivery.

Leadership & Team Development

- Lead and mentor Specialists/Coordinators: define priorities, set clear standards, provide coaching, and support development plans.
- Drive consistent ways of working: playbooks, QA checklists, pacing/SOV monitors, naming conventions, change logs, and structured post-mortems to improve performance over time.
- Res

📌 E-Commerce Manager (Toronto)
🏢 Publicis Groupe
📍 Toronto