Critical Mass is hiring a Performance Media Manager, Investment to join our growing team.The Performance Media Manager, Investment is the day‑to‑day steward on the business and is on the front lines of developing and activating both tactical and custom digital recommendations to meet our clients’ goals.

They are a Digital native, curious about unique emerging opportunities and prepared to provide a point‑of‑view, recommendation, and optimization recommendations based on campaign performance. They are the primary contributor to the development of the Associate(s), guiding them through the fundamentals of the planning process (inclusive of partner evaluation, negotiation, reporting, optimization, insight generation, billing, etc.), while also being a key touchpoint to stakeholders across the organization and the client for day‑to‑day management and support.

You Will:

Coordinate and oversee the management, trafficking, optimization and reporting of all campaign initiatives.

Manage the billing team and provide final approval on all billing needs

Oversee and approve all media campaign set‑up and execution, including working with other internal teams and clients to secure deliverables

Provide strategic insights and optimizations for all client reports

Research and prepare recent information for paid media plans, RFPs, and presentations

Evaluate, build and maintain relationships in the display and emerging media community

Stay up to date on and advise the Media team on the latest trends in interactive marketing / media and developments

Lead the development of “Point of View” (POV) documents on new trends or special opportunities

Evaluate client needs and elevate needs or issues as they arrive to leadership

Drive audience insights and channel strategy

Sell in media initiatives to client

Integrate with neighboring disciplines (MKS, Strategy, Creative)



on overall campaign direction

You Have:

3-5 years of experience in digital activation, executing and optimizing campaigns acrossprogrammatic/media buying, display, and video platforms with a focus on data‑driven results

Hands‑on experience withDSPssuch asTTD, DV260, Yahoo, Amazon, and others.

Strong mathematical aptitude and understanding of the digital media landscape

Experience with budgeting, forecasting, and campaign optimizations across platforms

Proficient in research, audience planning, and developing social media plans (audience, platform, placement, ad mix)

Excellent communication skills and comfortable presenting recommendations to clients

Full campaign ownership: setup, ad creation, QA, pacing, budget management, and optimizations

Proficient in reporting and analytics, including crafting insights and using Excel

Knowledgeable about integrating online and offline media opportunities

Knows industry tools such as (DDS/Prisma, ComScore, Nielsen,AdViews, eMarketer, etc.)

Excellent presentation, verbal, and written skills

Salary range: $75,000 - $85,000 CAD

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.

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📌 Performance Media Manager, Investment (Ontario)
🏢 Critical Mass
📍 Ontario