Senior Product Manager, Acquisition

500M+ downloads. 80M+ monthly users. A decade of building – and we’re still accelerating. Flo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 – and we’re not slowing down. With 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better. The job As Senior Product Manager for Predictive Growth at Flo, you'll own Flo's predicted Lifetime Value (pLTV) platform across iOS, Android, and Web. pLTV is the shared signal behind UA bidding, budget allocation, creative-testing prioritisation, finance forecasting, and roadmap decisions across the organisation — making it one of the highest-leverage PM roles in growth. You'll work with a team of data scientists, machine learning engineers, and data engineers running Flo's production pLTV models across short-horizon (intra-day) and long-horizon (M15+) predictions. You'll drive accuracy improvements, expand signal coverage across platforms, and extend pLTV's reach into new decision domains. You'll also help scale Flo's in-house agentic experimentation system — already delivering 30%+ quality gains — and contribute to the next generation of Flo's marketing measurement stack, including Marketing Mix Modeling and incrementality testing. This is a senior IC role with company-wide visibility, partnering with leadership across User Acquisition, Finance, Analytics, and Engineering. It's equally hands-on in delivery: co-leading the team day-to-day with your engineering manager pair, writing the specs, defining the epics, staying close to the work. Your Experience Must have: * Proven experience owning machine-learning or data-driven products in production — predictive scoring, propensity, ranking, forecasting, or similar data-rich products. Strong fit for current Product Managers; also open to Engineering Managers, ML Engineers, or tech leads who have shaped product direction end-to-end and are ready to make the switch into a PM seat. * Hands-on delivery instincts — equally comfortable in Jira (writing specs, defining epics, refining the sprint backlog, unblocking the team) as in strategic planning and stakeholder management. Co-leads the team day-to-day with your engineering manager pair. * Hands-on partnership with data science and machine-learning engineering teams — partnering on model evaluation, retraining cadence, feature decisions, and release discipline. * Strong analytical fluency — SQL proficiency, comfort interpreting model evaluation metrics, and the habit of interrogating performance at segment, cohort, and campaign level rather than blended aggregates. * Demonstrated ability to influence senior cross-functional stakeholders across marketing, finance, analytics, and engineering — translating technical model behaviour into commercial decisions. * Comfortable in fast-paced, ambiguous environments — balancing platform investments against fast-cycle experimentation, with shifting priorities and competing demands. Nice to have: * Working knowledge of mobile and web user acquisition — how bidding, attribution, and campaign optimisation actually work, including privacy frameworks such as SKAN/ATT or Privacy Sandbox. * Hands-on experience with mobile attribution platforms (AppsFlyer, Adjust, Branch, Firebase) and modern measurement frameworks (SKAdNetwork, GA4). * Exposure to Marketing Mix Modeling, incrementality testing, holdout design, or causal inference techniques. * Familiarity with feature stores (Databricks, Tecton, Feast) and modern MLOps tooling. * Subscription-app, health & wellness, or femtech domain background. * Exposure to agentic AI or LLM-orchestrated workflows for ML experimentation, research, or model evaluation. What you'll be doing You'll be responsible for: * Owning Flo's pLTV product roadmap end-to-end across iOS, Android, and Web — driving accuracy improvements, expanding feature coverage, extending prediction horizons, and pushing pLTV into new decision domains (creative testing, product roadmap, pricing, hypothesis validation) alongside its existing UA and Finance use cases. * Partnering with data scientists and engineers on feature strategy — deciding which inputs the model consumes and ensuring those features are available reliably in production. * Operating rigorous release discipline — gated rollouts, shadow-mode evaluation, drift detection, automated retraining, and post-launch calibration — so production models stay accurate as data distributions and platform policies evolve. * Working closely with data scientists and analysts to investigate model quality issues — country-level miscalibration, cohort drift, signal anomalies — and feeding findings back into the next iteration. * Helping scale Flo's agentic ML experimentation system from hundreds toward thousands of model runs — compounding quality gains back into production. * Acting as the primary product partner to User Acquisition leadership — translating model behaviour into bidding decisions, framing trade-offs, and aligning on attribution-window strategy. * Reporting model performance and strategic recommendations into monthly leadership reviews and quarterly investment decisions. * Contributing to Flo's next-generation measurement stack — including Marketing Mix Modeling, incrementality testing, and causal lift methodology — so marketing investment decisions are grounded in causal, not correlational, signal. #LI-Hybrid #LI-AJ1 Annual Salary Range (ranges may vary based on skills and experience) £92,000—£115,000 GBP How we work We’re a mission-led, product-driven team. We move fast, stay focused and take ownership – from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar. You’ll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it.  What you'll get We support impact with meaningful reward. Here’s what that looks like: * Competitive salary and annual reviews * Opportunity to participate in Flo’s performance incentive scheme * Paid holiday, sick leave, and female health leave * Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents * Accelerated professional growth through world-changing work and learning support * In-person collaboration and work in a hybrid model, with 3 days per week spent in the office * 5-week fully paid sabbatical at 5-year Floversary * Flo Premium for friends & family, plus more health, pension and wellbeing perks Diversity, equity and inclusion Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role – nothing else. We’re proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.

FRESH FOOD, HAPPY DOGS. We believe dogs deserve the healthiest, most natural and tastiest meals - with none of the nasties. That’s why we make FRESHly prepared food, cooked just like you would at home and delivered direct to our customers in perfect portions. As a B-Corp certified company, you’re joining a sustainable business that genuinely cares about our people, our products and our impact on the planet. Our goal is simple: to help dogs live healthier, happier, and longer lives, while leaving humans smiling after every interaction. We’ve come a long way since our co-founders (Kev & Dave), hand delivered the very first Butternut Box. Today, we feed hundreds of thousands of hungry dogs across the UK and Europe - but we won’t stop until we’re feeding dogs everywhere. To get there, we need a team of brilliant people who share that ambition to come and work for us.  🐾 THE JOB:  As a Senior Software Engineer in the Acquisition Squad, you will be the driving force behind the key application and web development projects that directly fuel our growth. You will work closely with product managers, designers, growth marketers, and fellow engineers to build features and products that optimise our signup funnels, referral loops, and landing pages to delight prospective customers. * Architecture & Delivery: Contribute to the architecture and development direction of the squad to ensure high-quality, maintainable, modular, and reliable code is shipped across our acquisition stack. * Heavily Backend-Weighted: Your day-to-day focus will be heavily centered on our backend infrastructure (Ruby on Rails, PostgreSQL, GraphQL) to manage discount APIs, optimise session architectures, and support core functionality. We have a dedicated team of frontend experts who own our client-side technologies, though a willingness to collaborate across the stack is always welcome. * Marketing & Tracking Infrastructure: Partner closely with our Growth Marketing teams to maintain and optimise third-party tracking integrations. You will help manage server-side data collection, analytics event tracking, and cookie compliance, ensuring we eliminate single points of technical knowledge risk within the squad. * Engineering Culture: Learn about and champion best practices in code, systems architecture, and engineering processes while actively elevating those around you through pair programming, mentoring, and code reviews. 👀 WHAT WE'RE LOOKING FOR:  * Backend Expertise: Significant commercial experience in a senior engineering role with deep, production-grade familiarity with Ruby on Rails (But we are open to other OOP languages i.e Python) and PostgreSQL. * A/B Testing Knowledge: Strong familiarity and hands-on experience implementing structured A/B testing methodologies to drive core business metrics. * Autonomous Communication: The ability to work independently, communicate directly with downstream marketing and product stakeholders, and articulate technical/architectural decisions clearly without needing intermediaries. * Growth & Commercial Mindset: An understanding of how backend engineering and system performance directly impact core business metrics, user tracking, and conversion rates. * Dog-Centric: Completely obsessed with dogs! Nice to Haves: * Frontend Agility: Experience with React and TypeScript (if you want to flexibly pitch in on our digital onboarding stack alongside our frontend experts). * Tracking & Analytics Tools: Experience with or exposure to third-party tools like Segment, Google Tag Manager (GTM), Meta Pixel, Google Ads, or Amazon Advertising. * Modern Web Architectures: Familiarity with GraphQL, Storyblok (our CMS platform), and Vercel deployment workflows, alongside any exposure to Next.js. * Domain Background: Prior experience in fast-paced B2C/B2B startup environments, subscription models, or international e-commerce platforms. ⏳ THE INTERVIEW PROCESS: 1. Initial call with your dedicated Talent Acquisition Partner, carried out remotely.  2. Take home task via Coderbyte  3. Technical Interview  4. Behaviours interview and Leadership Interview We usually expect our interview process to take 3-5 weeks, end to end.  🙌 OUR BENEFITS: * 25 days holiday (plus 8 bank holidays) and an additional day for every year of service up to 5 years * 5 additional, paid 'paws' days off per year dedicated to your learning, development or personal wellbeing. Hit pause when you need it most * £500 personal learning & development budget to sharpen your skills * A significant discount on our Fresh food, to keep your own dogs as healthy as our customers * Enhanced parental leave * Flexible core working hours * Cycle to work scheme * Pension with NEST * Private Medical Insurance with Vitality * Private Dental Insurance with Bupa * Paid time off for fertility treatments and pregnancy loss * Paid sabbaticals for squad members with 5 or more years service at Butternut * Discounted gym access through MyGymDiscounts * Lots of office dogs (Ajax, Peggy, Chief, Louis, Hansen, Winnie and many more….) 💡 IMPORTANT THINGS TO NOTE: * We recommend getting your application in as soon as possible. We reserve the right to close the role early.  * Our team thrives on collaboration and whilst this role is being offered remotely you are also able to join us in our West London Office. We’re in 3 days a week (Monday, Wednesday, and Thursday). * We’re a small (but mighty!) recruitment team. We aim to respond to everyone personally, but if we’re flooded with brilliant applications, we may need to close the role early. We appreciate your patience while we review applications. * For this specific role, we’re unable to offer visa sponsorship, so you’ll need the right to work in the UK. ❗️WE BELIEVE IN A SEAT AT THE TABLE FOR EVERYONE.  Butternut Box is an equal opportunity employer. We believe that to make the best food for all dogs, we need a team that represents all humans. We celebrate different nationalities, backgrounds, experiences and perspectives. We are specifically committed to increasing representation from underrepresented groups. We want a strong, diverse team built from different identities and lived experiences. We’re not perfect, but we are dedicated to the ongoing work of building an inclusive, supportive place where you can do the best work of your career.