Senior Performance Media Manager, Planning

Job

  • Toronto  
    Ontario, Canada
    perm  
  • Company
    Critical Mass  
    Start date
    ASAP  
    Duration
    n/a  
    Wage
    Undisclosed
  • Closing date
    31 October 2026  
    Posted on
    30 September 2026  

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

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