Senior Lifecycle Marketing Manager

About 38TERA

38TERA is a gut health supplement company founded by gastroenterologist Dr. Will Bulsiewicz (Dr. B) and co-founder Simon Hill. We sit at the intersection of clinical science and everyday wellness — making products that are rigorously researched, dosed honestly, and built for people who hold their health to a higher standard. We're expanding from one product to five in 2026 and building the team to match. Everyone here cares deeply about what we put into the world.

About the Role

We're hiring a Senior Lifecycle Marketing Manager to own the full retention engine at 38TERA. Subscription is the center of our business model, and your job is to grow the value of every customer relationship from first purchase through loyal, long-term subscriber.

You'll own strategy, architecture, and execution across our entire retention stack: email and SMS (Klaviyo), subscription lifecycle (Skio), loyalty and rewards (Bubblehouse), reviews (Okendo), and on-site retention and reorder (Rebuy). You'll work alongside our Content & Brand Manager, who writes the copy across owned channels — you own the strategy, segmentation, flows, and deployment that put those words to work.

This role is for an experienced operator who thinks in LTV and cohorts, builds systems rather than sends, and treats retention as a product to be engineered, not a calendar to be filled.

What You'll Own

Email & SMS (Klaviyo). The full program — flow architecture, campaign strategy, segmentation, deliverability, and testing across US, UK, and AUS/NZ. You'll design and continuously optimize the lifecycle ecosystem from welcome through winback, build the campaign calendar in partnership with the Content & Brand Manager (you own targeting, timing, and performance), and develop SMS deliberately — the infrastructure exists; you'll decide when and how it becomes a meaningful channel.

Subscription Lifecycle (Skio). The subscriber journey end to end — onboarding, engagement, churn prevention, cancellation saves, and winback. You'll use subscription data to drive lifecycle triggers and upgrade opportunities, and partner with the Head of Marketing on offers, pricing tests, and retention economics.

Loyalty, Reviews & Advocacy (Bubblehouse, Okendo). Loyalty program strategy — tier design, points economy, referral mechanics, and the flows that power them — plus the review generation engine that feeds social proof back into lifecycle and site experiences. You'll connect loyalty, referral, and reviews into one coherent advocacy system, not three disconnected tools.

On-Site Retention & Reorder (Rebuy). Cart, checkout, and post-purchase experiences — upsells, cross-sells, subscription upgrades, and reorder prompts — treated as part of the lifecycle system. What a customer sees in cart should reflect where they are in their journey.

Analytics & Experimentation. Retention reporting (active subscribers, LTV, flow revenue contribution, cohort health) and a continuous, privacy-aware testing program across flows, segments, offers, and timing — made legible so leadership can see what's working and where to invest.

Day to Day

In any given week you're auditing flow performance, designing a new segment strategy, briefing the Content & Brand Manager on what a flow needs to say, building automations in Klaviyo, analyzing a subscriber cohort, and testing a cancellation-save offer in Skio. You use AI tooling aggressively; we expect AI-augmented workflows from day one. You're equally comfortable in the data and in the platform — strategy and execution are the same job here.

Who You Are

• 6–8 years in lifecycle, retention, or CRM marketing at DTC brands, with subscription-first experience strongly preferred
• Deep Klaviyo expertise: advanced flows, segmentation, deliverability, and testing. You've owned the platform, not just used it
• Experience with subscription platforms (Skio, Recharge, or similar) and the retention economics behind them
• Analytical operator, fluent in LTV, cohorts, and incrementality. You measure what's real, not what's easy
• Familiarity with loyalty, reviews, and on-site personalization tools (Bubblehouse, Okendo, Rebuy, or equivalents)
• Experience using AI tooling to scale lifecycle operations
• Systems thinker with an operator mindset. You build programs that run without you babysitting them
• Bonus: supplement, health, or wellness category experience; SMS buildout from scratch; multi-geo lifecycle programs

Who Thrives Here

You see retention as the most honest form of marketing: if customers stay, the product and the experience are working. You're energized by owning a system end to end, you'd rather build the machine than pull the levers, and you hold your numbers to the same standard we hold our formulations: real doses, honestly measured. You want to work on something you believe in, with founders who are credible, accessible, and genuinely invested in getting it right.

Compensation

Base range: $125K–$145K, plus bonus potential. Final offer based on experience.