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, youwillberesponsible forbuilding, executing, andoptimizingperformance-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 andoptimize towardROAS, CPA, CAC, and conversion goals.
- Partner with activation teams to ensureaccuratesetup, trafficking, and execution
- Identifyoptimization 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 insightsCollaborate 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:

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📌 Senior Performance Media Manager, Planning (Toronto)
🏢 Adelphi Group
📍 Toronto