Senior Growth Engineer

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🏷️ Title: Senior Growth Engineer 👫 Department: Engineering 💰 Salary: £75,000 - £95,000 🎁 Benefits & Culture: Lottie's careers page here , Lottie's tech careers page here 🎥 Meet our CTPO: Solving hard problems in care 📈 Equity: A very generous EMI share offering. 🌴 Holiday: 26 days + bank holidays. 💗 Mission: Elevate later life for everybody and build the care sector of the future. 💻 Office Policy: Hybrid with a two core office days per week. 🌍 Office Location: London Bridge, London, UK 🔍 The Opportunity: Lottie's marketplace connects millions of families with the right care at the right time. We've built something real - now we need to grow it faster, smarter, and with more precision than a traditional engineering team can. We're looking for a Senior Growth Engineer to join a small, focused Marketplace team and own the full experiment loop - from hypothesis to code to result. You'll work closely with a PM and designer to run high-velocity tests, feed signal back to Google to sharpen our ad performance, and build the lightweight tooling that lets us learn faster than our competitors. This is a role for someone who ships first, learns fast, and doesn't look back. If you need things to be perfect before they go live, this probably isn't the right fit. 💻 What does this role involve? Running end-to-end experiments across Lottie's marketplace , from ideation through implementation to result analysis Building and optimising conversion-focused front-end experiences , often with limited design input Writing code that sends performance data back to Google to improve ad targeting and campaign efficiency Automating parts of our Google Ads configuration and campaign management Owning A/B test pipelines and iterating quickly based on real usage data Working autonomously within a lean, fast team 💪 What problems will you be solving? Turning traffic into outcomes. Our marketplace is trusted by half a million families a month. You'll be closing the gap between the families who land on Lottie and the ones who find the right care. Every experiment you run is a chance to make that faster, clearer, and more effective. Making our ad spend smarter. You'll build the pipelines and integrations that help Google understand what a good Lottie outcome looks like, so our campaigns optimise toward the things that actually matter. Moving fast in a space that matters. Care decisions are urgent and emotionally charged. Getting families to the right information faster isn't just a conversion metric. It's a meaningful outcome for real people. 👀 We think you'll be a great fit if... You have 5+ years of software engineering experience, front-end leaning with genuine full-stack breadth You think in experiments. You can articulate what moved because of your work, not just what you built You're comfortable with throwaway work. When a test fails, you kill it and move on You're autonomous and low-dependency . You thrive with a hypothesis and a deadline, not a detailed spec You're data-driven. You define success before you build, and you look at the numbers before you declare a win AI tools like Claude Code are already a big part of how you work, and you're hungry to get better at them Sound like you but not quite 100%? Apply anyway - we're looking for potential and passion, not perfect CV match! 💔 This role isn't for you if... You prefer depth over breadth and one big build over many small bets You need clearly scoped requirements before you can move You're looking for a team with lots of process and structure around you Our mission to transform later life care doesn't resonate with you 🔢 Lottie's Interview Process Intro call with our Talent Lead (20 min, remote) Engineering Manager interview (45 min, remote) Technical assessment: coding pairing session and 2nd session (1h each, remote) Behavioural interview with Hiring Manager (45 mins, remote) Final interview with Will Donnelly, Co-Founder & CEO (30 mins, in person, London Bridge) 🤩 Candidate Experience: All candidates will be informed of their application status. Pre-Screen & First Interview: You'll receive an email notification, but no specific feedback will be provided at this stage. Hiring Manager Interview: If you are unsuccessful after this interview, you will receive constructive feedback via email. Technical Interviews: If you are not successful after these, you'll receive constructive feedback via email and be offered a debrief call with our Talent Lead. Final Interview: For final-stage candidates who are not offered the role, we will provide your feedback live via a phone call. 🚀 Meet Lottie Founded in London in July 2021, Lottie is a fast growth HealthTech start-up aiming to build the world's first SaaS enabled marketplace for care and with a goal of allowing families to seamlessly book care online in a similar manner to reserving a holiday stay via Airbnb or Expedia. Since launching in July 2021, Lottie has supported millions of care see

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