Growth Marketer - own conversion, retention & monetization for a live health app

We're a live, post-launch health app for travellers and remote workers (medical records, translation, provider search, lab analysis; think "a health wallet for people who live across borders"). We have real traffic, real users, and a content engine of hundreds of SEO pages already ranking. What we don't have yet is someone who wakes up every day thinking about three numbers. Please note: This is an execution role, not a strategy role. I want a partner in crime who helps me make my to do list shorter not longer. If your instinct is to open with a 30-page strategy document, we're not a fit. You'll own three things: 1. Conversion: we get thousands visitors a month and convert very few to signups. That's the first fire. You'll own visitor→signup: landing copy, per-page CTAs across our content pages, and a steady drip of A/B experiments. 2. Retention & stickiness: take over our lifecycle email and newsletter end-to-end (we use Mailjet), build the activation and re-engagement flows, and tighten the new-user experience so people come back. You spec the onboarding changes; our engineering ships them. 3. Monetization: we're about to switch on paid plans, and we have a built-out affiliate programme ready to embed into our content. You'll place the affiliate layer contextually across the content, write the copy around it, and own the funnel from free → paid. What success looks like: - Visitor→signup rate up and to the right - A named activation metric and D7/D30 retention moving - Affiliate revenue-per-visit live and climbing - Free→paid conversion once paywalls are on You are: - A hands-on growth or lifecycle marketer who has personally shipped email flows and CRO experiments, not managed a team that did - Comfortable working directly in a headless CMS (we use Sanity) and in analytics tools (GA4, PostHog, Clarity) - Someone who writes your own email and landing copy with no separate copywriter in the loop (except Claude) - Metrics-first: you think in funnels and experiments, not brand decks - Fluent in UK/British English Big plus: hands-on affiliate / content-monetization experience, and any background in health, SaaS, or travel. Logistics: Part-time, ongoing, remote. You'll have engineering support (me) to ship anything that needs code; you never have to touch the codebase yourself if you don't want to. We'd like to start with one small paid trial project before committing to an ongoing retainer. To apply, skip the generic pitch. Tell me: 1. Only about 20% of users who complete the onboarding come back to use the app after 48hrs. Based on just that, what would you look at first to understand why, and what's the first hypothesis you'd test? I'm not expecting a silver bullet without data, I want to see how you reason. 2. One CRO experiment you personally shipped and the result (a number). Proposals without answers to those two questions won't be read.