Senior Performance Media Associate, 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 Performance Media Associate, Planning to join our growing team. As the Senior Performance Media Associate, Planning, you will support the execution, reporting, and optimization of performance media campaigns across multiple channels. This role builds foundational expertise in data-driven media planning and supports the broader team in delivering measurable business outcomes. 

You will: 

  • Assist in building and maintaining media plans across digital channels 
  • Support campaign setup, trafficking, QA, and tracking implementation 
  • Maintain reporting dashboards and performance tracking systems 
  • Ensure campaign details align with strategic direction and client goals 
  • Compile campaign performance data and support reporting deliverables 
  • Identify initial insights and optimization opportunities 
  • Support A/B testing and performance evaluation efforts 
  • Assist in translating data into basic client-facing summaries  
  • Support day-to-day client requests and internal coordination 
  • Work closely with Managers and Directors to execute media strategies 
  • Maintain documentation, trafficking sheets, and reporting accuracy 
  • Participate in training and skill development across media platforms

You have: 

  • 1–3 years of experience in media, marketing, or advertising 
  • Exposure to digital media channels such as Search, Social, or Programmatic 
  • Basic understanding of campaign metrics (CTR, CPC, CPA, ROAS) 
  • Strong attention to detail and organizational skills 
  • Willingness to learn performance media strategy and execution

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: $60,000-$80,000

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