Agency

Critical Mass

Job Function

Media

Job Subfunction

Media Planning and Buying

Critical Mass is hiring a Senior Media Manager, Performance Planning to join our growing team. As the Senior Media Manager, Performance Planning, you will be responsible for building, executing, and optimizing performance-driven media plans across multiple client accounts. This role focuses on translating strategic direction into actionable media executions that drive measurable business results.

You Will

Build and manage multi-channel media plans across Search, Social, Programmatic, Video, and emerging channels

Translate strategic direction into detailed media recommendations and activation plans.

Support budget allocation, forecasting, and campaign structuring

Ensure plans align with audience insights and business KPIs

Monitor campaign performance and optimize toward ROAS, CPA, CAC, and conversion goals.

Partner with activation teams to ensure accurate setup, trafficking, and execution

Identify optimization opportunities across targeting, creative, bidding, and channel mix

Support testing initiatives and performance reporting

Manage day-to-day client communication and reporting needs

Present campaign updates and performance insights

Collaborate with Analysts, Planners, and Activation teams to ensure alignment

Support junior team members and contribute to best practices

You Have

4–7 years of media planning or performance marketing experience

Experience with digital platforms including Paid Search, Paid Social,



and Programmatic

Understanding of performance KPIs such as ROAS, CPA, and conversion rate

Robust analytical and organizational skills

Experience in client-facing environments

What We Offer

Global maternity and parental leave

Competitive benefits packages

Vacation, compassionate leave, personal/sick days, and flex days

Access to online services for families and new parents

Early Dismissal Friday’s (off at 3:00 PM local time every Friday)

13 affinity groups

Internal learning and development programs

Enterprise-wide employee discounts

Toronto: $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/

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Toronto: $80,000-$120,000

📌 Senior Performance Media Manager, Planning (Toronto)
🏢 Critical Mass
📍 Toronto