About Cello
Cello 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.
Why Cello
- $10.3M raised from top-tier investors, 30+ new customers every month.
- Small team — you'll shape how we build, not just execute tickets.
- Founding team of serial founders and operators from Twilio, Wise, and Skype.
- We adopt AI tools where they actually help — because our customers do too.
- Remote-first with regular team meetups across Europe.
What We’re Building
We help SaaS companies turn their users and partners into a sales channel through referrals, sharing, and recommendations - 10M+ end users interact with our system every month. Our widgets live inside customer products, which means your code runs in environments you don't control. On top of that: APIs that customer developers integrate against, and a portal where customers manage their campaigns and analytics. Under the hood: attribution across complex user journeys, AI-based recommendation engines, multi-tenant infrastructure serving hundreds of customers, scaling millions of events.
What you will do
- Work with the following stack: React, Typescript, NestJS, Python, and AWS.
- Start with well-scoped tasks and ramp up, gradually taking on more ownership as you learn the product.
- Build features, fix bugs, and work alongside senior engineers to grow.
- Leverage AI tools heavily in your workflow to move fast and learn faster.
About You
- Some experience with React (or similar) and NestJS/Python (or similar) - you need to have built something real.
- Hungry to learn, with high energy and curiosity.
- Enthusiastic about AI tools and actively use them, while maintaining the ability to write code without AI assistance.
- Strong work ethic with the ability to take ownership and ship commitments.
Nice-to-haves
- Experience with mobile development (React Native, Flutter, etc.)
- AWS exposure, or a strong willingness to learn.
- Side projects or a portfolio that shows you like building things.