Senior Growth Marketing Manager

About Mous

We are Mous. (Pronounced mouse, not moose.) People deserve tech and lifestyle products that are fit for purpose, perform as promised, and empower them to be their best. That’s why we’re building the go-to brand for products that genuinely deliver. For over 10 years, we’ve pushed product performance to its limits, designing from first principles, validating through real-world testing, and investing millions in R&D. In parallel, we’ve built world-class in-house marketing capabilities, creating highly engaging, performance-led content that proves what our products can do and resonates with a passionate, fast-growing community around the brand. From throwing phones off dams to launching category-defining products, our ambition is simple: raise the standard of the industry and build one of the most effective consumer brands in the world.

About the Role

We’re looking for a Senior Growth Marketing Manager to lead our world-class Growth team and take significant ownership of our growth marketing engine. This is a rare opportunity to step into a highly visible, high-impact role at a company renowned for best-in-class growth marketing. You’ll be responsible for shaping strategy, leading execution across our core paid channels, and driving commercial outcomes across the business. You’ll hit the ground running, embedding into our growth channels, learning our proprietary attribution model, and working closely with senior leaders. Once up to speed, you’ll have the autonomy to lead major growth initiatives, manage a multi-million-pound marketing budget, and develop a high-performing team. This role offers real scope to grow in responsibility and influence, allowing you to lean into leadership, strategy, and the areas of the business you find most compelling.

About You

As Senior Growth Marketing Manager, you’ll play a pivotal role within the Growth team, collaborating closely with Creative Marketing, Data, Product, and E-commerce to scale the business and drive revenue. You’re exceptionally strong with numbers, fluent in using data to make commercial decisions and optimise performance. You are results-driven and highly accountable, able to manage millions in marketing spend while delivering meaningful impact across the business. Curious and analytical, you enjoy having your assumptions challenged and aren’t afraid to challenge others in return. You thrive in high-performance, fast-moving environments, embrace failure as a learning opportunity, and are motivated by ownership and making a real difference.

Key Responsibilities

• Own and optimise paid growth marketing across Meta, Google, TikTok, Amazon, and emerging platforms
• Lead the development and execution of growth strategy across product categories and initiatives
• Manage and allocate a significant marketing budget to drive efficient customer acquisition and ROAS
• Use Mous’ proprietary attribution model to inform channel mix, investment decisions, and forecasting
• Analyse key performance metrics (CAC, LTV, ROAS, CVR, AOV) and present clear insights to senior leadership
• Run structured A/B testing across creatives, copy, audiences, and landing pages
• Collaborate closely with our in-house Creative and Content Strategy teams to deliver high-impact, performance-led creative
• Work with Data and Analytics to translate insights into commercial action
• Develop, mentor, and performance-manage a team of Analysts and Executives
• Partner with Product and E-commerce to align growth initiatives with wider business priorities

How will success be measured?

• Deep understanding of the Mous approach to growth marketing and content
• Clear ownership of growth strategy and prioritisation across channels and initiatives
• Strong commercial impact on revenue, efficiency, and contribution margin (CM3)
• Effective leadership and development of a high-performing growth team
• Ability to connect marketing activity directly to P&L outcomes

Skills and experience

We’re looking for someone who is:

• Exceptionally strong numerically, data is the language of growth marketing
• A rigorous problem solver, comfortable getting deep into detail to uncover insights
• Commercially minded, with the ability to prioritise ruthlessly
• Confident managing large, complex datasets and translating them into decisions
• Highly detail-oriented, with a strong understanding of campaign setup and execution
• A clear and effective communicator with internal and external stakeholders
• Action-biased, resilient, and comfortable operating in ambiguity

Requirements

• Strong analytical skills with Excel and Power BI (or equivalent)
• Experience with experimentation and A/B testing
• A 2:1 or higher degree (although this isn’t a prerequisite)

Nice to have

• 2-4 years’ experience with a DTC Brand, consultancy, or high-growth startup
• Experience managing and developing a team
• Exposure to SQL and advanced analytics tools

About Our Offer

We operate a hybrid working model, typically spending at least three days a week in our Hoxton office to maintain our collaborative and high-energy culture. Benefits include:

• Significant opportunity for growth, ownership, and career progression
• Competitive salary reflective of experience and impact
• 30% Friends & Family discount on all Mous products
• 25 days’ holiday + 8 bank holidays
• 1 month paid leave after 5 years’ service
• Cycle to Work Scheme
• Employee Assistance Programme
• Charlie HR perks and discounts
• Regular socials, events, and on-site activities (including an on-site gym)

Our Values

• Get Results – We take accountability, prioritise impact, and push standards higher.
• Work Together – We collaborate openly, challenge constructively, and learn from each other.
• Enjoy the Ride – We stay agile, embrace change, and enjoy building something special together.

Our Commitment

Mous is an equal opportunity employer. We celebrate individuality and are committed to building a diverse team with a wide range of experiences, perspectives, and backgrounds.