Senior Media Strategist

At Keen, we don’t just deliver services. We embed ourselves into the heart of our clients’ businesses. From digital marketing and creative to customer experience, we build high-performance digital experiences for global brands. 

Keen helps U.S. and international companies scale smarter by embedding expert teams that drive results across marketing, creative, customer experience, and sales. We are not a legacy agency. We are a partner in growth, and that is where you come in. 

The Role

We are looking for a Media Strategist to assist our client in leveraging marketing as growth capital. The role will focus on integrating media, creative, and measurement to drive contribution margin and deliver measurable business lift.

The Senior Media Strategist role is a specialized position for an expert with 6–9 years of experience focused on performance marketing and growth. You will serve as the strategic engine for large accounts, translating business goals into channel-specific action plans and ensuring profitability.

Key Responsibilities

• Quantitative Forecasting & Margin Management:
• Develop and maintain channel-level performance forecasts by modeling variables (e.g., CPM trends, conversion rates) and defining the point of diminishing returns.
• Manage performance metrics (ROAS, CPA, CPL) to operate within client-defined Contribution Margin (CM) boundaries.
• Contribute channel data and insights to the wider team's holistic cross-channel forecast for strategic modeling.
• Cross-Channel Execution & Media Mix 
• Support emerging and challenger brands with cross channel media strategy and execution driving efficient cost per lead or new customer while identifying opportunities to scale spend. Strategists MUST understand the interplay and effect of other channels on overall performance including incrementality testing and measurement through the funnel. 
• Participate in internal cross-channel discussions to recommend pressure tests to the central Media Mix Model (MMM).
• Provide data from your channel to support recommendations for budget reallocation to the Account Supervisor.
• Execution & Channel Expansion:
• Lead the strategy and execution across core social platforms (Meta, TikTok, Pinterest, Snapchat).
• Demonstrate a track record of identifying and successfully launching new media opportunities (e.g., Meta, Pinterest; pMAX, Programmatic) to expand the client’s profitable footprint.
• Data Navigation & Reporting:
• Interpret performance and lift data from third-party measurement and attribution tools, including Recast, TripleWhale, and Northbeam.
• Proactively partner with the data science team to identify and resolve data limitations within the evolving proprietary measurement tools.
• Must be prepared to forecast and model complex scenarios using advanced Google Sheets/Excel when proprietary tools are not yet mature.
• Creative Briefing
• Collaborate with creative strategist and account supervisor to recommend new creative tactics or audience-specific narratives. Share insights on performance and tests in order for the creative strategist and Account Supervisor to optimize ongoing executions. 
• Log and maintain a record of best practices for copy and creative for the Account. 
• Expect to manage 4-7 accounts total

Desired Qualifications

• Experience: 6–9 years of experience managing and scaling small startup brands with a 0-1 growth mindset.
• Analytical Skill Set: Strong grasp of mathematical and statistical concepts; Expert proficiency in advanced Google Sheets/Excel modeling is required. This role is inherently quantitative.
• Platform Expertise: Fluency in all major social media buying platforms and ad managers particularly Meta, Google and TikTok. 
• Data Literacy: Ability to interpret and apply outputs from third-party attribution platforms; ability to navigate and contribute to an evolving internal data architecture.
• Innovation: Demonstrated ability to apply emerging technologies, particularly GenAI, to creative strategy and optimization for performance gains.
• Certification: At least one current paid media certification (e.g., Google Ads, Meta Blueprint, TikTok Academy).

• Hybrid schedule with collaborative office-based work in Woodstock, Cape Town
• Collaborate with a fast-growing international agency and a globally-minded team
• Autonomy to lead and innovate in your domain
• Career growth opportunities in a fast-moving organization
• Birthday leave plus professional development budget
• Join a team that values ownership, creativity, and results