As Senior Media Manager, you will own the creation, execution, and optimization of paid search campaigns, acting as the strategic SEM lead and advisor for a major national brand. You’ll provide leadership and expertise in account structure and setup, ongoing budget and bid management, and continuous performance optimization. You’ll collaborate across multiple teams and disciplines, present data‑driven insights, and deliver actionable performance reporting to clients.

You’ll be responsible for defining and communicating SEM goals, maintaining client satisfaction, and educating both internal and external teams on the evolving SEM landscape and its opportunities.

Agency

Critical Mass

Job Function

Media

Job Subfunction

Media Operations

You Will

Lead the ongoing development, implementation, and optimization of SEM strategy for a national brand with $1M+ budgets

Work as part of a larger SEM team, aligning your campaigns with your colleagues’ strategies to reduce costs & improve performance by sharing learnings

Translate business goals to SEM platform activation strategies/tactics

Own the hands‑on execution and management of day‑to‑day performance for multiple campaigns across SEM, Performance Max & Demand Gen, including budget pacing, campaign setup, account structure, targeting strategy, bid strategy, platforms, data usage, performance optimizations, testing strategy, troubleshooting, and downstream client funnel optimization

Clearly communicate paid search best practices and strategies, both internally and externally

Create and share search POVs and case studies across the agency

Develop consistent account processes and procedures

Craft compelling ad copy and guide CRO strategies to drive high-quality traffic and conversions

Deliver actionable insights to clients through insightful,



visually compelling reports (including analysis and strategic recommendations)

Identify market and consumer trends, telling a story with search data

Run iterative testing strategies to drive incremental performance lifts

Map out search tactics and strategies on a daily, weekly, monthly, quarterly, and annual basis

Conduct regular SEM audits and competitive analyses to identify net‑new opportunities

Provide data‑driven insights and recommendations to refine our strategy and improve campaign performance

Stay on top of the latest trends in the SEM landscape, keeping clients educated and adapting our search strategies as needed in response

You Have

4+ years of hands‑on experience managing and optimizing paid search campaigns (Search, Performance Max & Demand Gen) with large spends

Excellent written and verbal communication skills, with the ability to clearly and persuasively articulate paid search strategies

Strong presentation and storytelling skills, with an emphasis on data visualization

High attention to detail and multitasking across accounts

Proven success in optimizing SEM campaigns and achieving substantial improvements in performance over time

High proficiency in industry‑standard SEM tools (e.g. Google/Microsoft Ads, Google Analytics, Google Tag Manager, and Google Ads Editor)

Ability to react quickly, assess, and implement solutions





Excellent data analysis and problem‑solving skills A passion for testing and learning and a proactive approach

Ability to mine search data for campaign performance insights, uncovering opportunities to drive ROI

Passion for staying current in a rapidly evolving digital setting, leveraging new tools and techniques to gain a competitive edge

You May Have

Search Ads 360/SA360 experience a strong plus

Advanced Excel/spreadsheet & Prisma experience a plus

Google Ads certification a plus

Experience with Discovery, YouTube/Video, Display, Shopping/PLAs, and Social campaigns a plus

Experience with additional search tools such as SEMrush, Spyfu, Adgooroo, Marin, Skai, or Google Merchant Center a plus

Experience with Google Data Studio and other data visualization tools (e.g Tableau) a plus

Experience in the automotive industry a plus

Agency experience a plus

$80,000 - $120,000

Omnicom’s policy requires employees to work in the office for a minimum of three days a week, unless additional in‑office days are directed by their agency or manager. Our objective is to increase this requirement over time, and many of our agencies as well as Omnicom’s corporate group already require five days of in‑office attendance.

Omnicom is committed to hiring and developing exceptional talent. We agree that talent is uniquely distributed, and we’re focused on developing inclusive teams that can bring the best solutions to everything we do. We strongly believe that celebrating what makes us different makes us better together. Join us—we look forward to getting to know you. We will process your personal data in accordance with our Recruitment Privacy Notice.

Link to Recruitment Privacy Notice: https://www.omc.com/privacy-notice/

📌 Senior Media Manager, Investment (Winnipeg)
🏢 Critical Mass
📍 Winnipeg