Growth Marketing Manager

Who is Seraphina Therapeutics?

Seraphina Therapeutics is a San Diego-based consumer health company dedicated to discovering and developing novel, science-backed, natural products that protect our health as we age. Our team consists of leaders in medicine and public health, healthy aging science, and natural health products — a team of nerdy do-gooders driven by purpose, curiosity, and impact.

What is fatty15®?

Fatty15®, Seraphina’s consumer product brand, launched in 2021 and sold out within six weeks. Since then, it has earned Nutritional Outlook’s Ingredient of the Year, been recognized as a Fast Company World Changing Idea (2022 & 2024), and featured in Forbes, The New York Times, Washington Post, Men’s Health, Insider, W Magazine, and more.

Fatty15® is powered by C15:0, the first essential fatty acid discovered in over 90 years. Backed by more than a decade of research, 40+ patents, and numerous peer-reviewed publications, Fatty15® repairs, re-energizes, and replenishes cells to promote healthy aging. Learn more at DiscoverC15.com.

Position Summary

The Growth Marketing Manager owns and scales Seraphina’s paid media and performance marketing efforts across key digital and emerging channels. This role is responsible for driving efficient customer acquisition, improving conversion and retention, and delivering incremental, profitable growth across the full funnel.

This is a highly analytical and hands-on role suited for a data-driven marketer with experience in lean, fast-moving DTC or ecommerce environments. The Growth Marketing Manager balances strategy with execution and thrives in continuous testing, measurement, and creative iteration.

Key Responsibilities

Paid Media & Channel Management

• Partner closely with agency partners to manage and optimize paid media across Meta (Facebook/Instagram), Google (Search, Shopping, YouTube), TikTok, affiliate networks, podcast advertising, and TV/CTV
• Launch and manage internally-driven tests of new paid acquisition channels and media formats
• Support scaling efforts on Amazon, including collaboration with partners to manage media, optimize brand presence, and improve performance

Growth Strategy & Optimization

• Develop and execute full-funnel growth strategies spanning acquisition, conversion, retention, and lifecycle optimization
• Maintain a rigorous focus on CAC, ROAS, LTV, incrementality, and long-term growth efficiency
• Partner with Website and Lifecycle teams to support landing page, funnel, and on-site optimization initiatives

Experimentation & Analytics

• Design and run structured experimentation programs including A/B testing, creative testing frameworks, and incrementality tests
• Monitor performance daily and deliver clear, actionable insights and recommendations to leadership
• Build, maintain, and evolve dashboards and reporting across platforms and analytics tools

Creative & Cross-Functional Collaboration

• Partner with creative and content teams to brief, test, and iterate on ad creative, messaging, and landing experiences
• Collaborate cross-functionally with Brand, Customer Experience, Lifecycle, and Analytics teams to support broader growth initiatives
• Manage agency and vendor relationships, ensuring accountability, transparency, and performance

Qualifications

Who you are

• Desire to be part of something bigger — a movement to do good for the world
• A self-starter who takes ownership and moves work forward independently and proactively
• Growth-minded and curious, with a desire to test, learn, and iterate
• Comfort operating in lean, fast-moving startup environments with high accountability
• Strong analytical mindset with hands-on experience in performance analytics, attribution, and experimentation
• Working knowledge of modern attribution models, privacy constraints (e.g., iOS changes), and measurement limitations
• Ability to translate data into insights, narratives, and clear next steps for stakeholders
• Strong communication skills and comfort presenting performance, insights, and strategy to leadership

Required

• 4–7+ years of experience in growth marketing, performance marketing, or paid media roles, preferably in DTC or ecommerce environments
• Demonstrated experience scaling an ecommerce business on Shopify
• Experience managing spend and performance across Meta, Google Ads, and other digital performance platforms (e.g., TikTok, Reddit, Taboola, AppLovin, LiveIntent)
• Familiarity with Amazon Seller Central and self-serve Amazon Ads platforms

Preferred

• Experience with upper-funnel awareness channels such as podcasts and television (linear and CTV) is a plus
• Experience with influencer marketing, creator whitelisting, and user-generated content is a plus
• Experience in health, wellness, or regulated consumer categories is a plus

Compensation & Benefits

• Opportunity to play a key role in a purpose-driven organization making a tangible impact on consumer health and longevity
• Competitive compensation commensurate with experience
• Health, dental, and vision insurance
• 401(k) with company match
• Unlimited PTO and 11 company holidays
• Parental leave
• Fully remote work environment
• Free subscription to fatty15®