Agency:
Critical Mass
Job Function:
Media
Job Subfunction:
Media Planning and Buying
Job Description:
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
Strong 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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