<p style="min-height:1.5em"><strong>Cello</strong> is the Revenue Growth Infrastructure for modern digital businesses — turning word-of-mouth into a systematic, measurable growth channel for the AI era. Category leaders like Typeform, Miro, and Veed use Cello to accelerate their growth flywheel.</p><p style="min-height:1.5em"></p><h1><strong>TL;DR</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Seed, GrowthTech</p></li><li><p style="min-height:1.5em">Remote-first, Europe-based (must be within CET +/-3 hours)</p></li><li><p style="min-height:1.5em">Competitive salary + eVSOPS</p></li></ul><h1><br /><strong>Why Cello</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">$10.3M raised from top-tier investors, 30+ new customers every month</p></li><li><p style="min-height:1.5em">Small team — you'll shape how we build, not just execute tickets</p></li><li><p style="min-height:1.5em">Founding team of serial founders and operators from Twilio, Wise, and Skype</p></li><li><p style="min-height:1.5em">We adopt AI tools where they actually help — because our customers do too</p></li><li><p style="min-height:1.5em">Remote-first with regular team meetups across Europe</p></li></ul><p style="min-height:1.5em"></p><h1><strong>What We’re Building</strong></h1><p style="min-height:1.5em">We help SaaS companies turn their users and partners into a sales channel through referrals, sharing, and recommendations - <strong>10M+ end users</strong> interact with our system every month.<br /><br />Our widgets live inside customer products, which means your code runs in <strong>environments you don't control</strong>. On top of that: APIs that customer developers integrate against, and a portal where customers manage their campaigns and analytics.<br /><br />Under the hood: attribution across complex user journeys, AI-based recommendation engines, multi-tenant infrastructure serving hundreds of customers, scaling millions of events. Deeper than you'd expect from a referral tool.<br />Our product is integrated by customer developers - and that world is changing fast. The people building against our APIs and widgets range from <strong>corporate engineering teams to solo founders using AI coding agents</strong>. Keeping up with how developers work today, and making sure our product fits into all of those workflows, is one of the more interesting challenges here.<br /></p><h1><strong>What you will do:</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Work with the following stack: <strong>React</strong> · <strong>Typescript</strong> · <strong>NestJS </strong> · <strong>Python </strong>· <strong>AWS</strong></p></li><li><p style="min-height:1.5em">You'll start with well-scoped tasks and ramp up from there - we don't expect you to know everything on day one.</p></li><li><p style="min-height:1.5em">Build features, fix bugs, and gradually take on more ownership as you learn the product.</p></li><li><p style