Founding Product Designer

Join to apply for the Founding Product Designer role at Cello . Your Mission We are currently looking for a Founding Product Designer to shape the next generation of our product as the company moves toward a more self‑serve, product‑led future. Used by over 10 million end users each month, Cello is embedded directly into customers’ products. This role owns the end‑to‑end product experience – across end users, operators, and AI‑assisted workflows – designing scalable, interaction‑first systems that unlock new growth use cases in an increasingly automated, AI‑driven world. TL;DR Seed, GrowthTech Remote‑first (+/-3 CET) Competitive base salary + significant equity Why join Unique growth opportunity: early‑stage GrowthTech start‑up backed by top‑tier investors like HV Capital, ByFounders, TinyVC, and operator angels from YouTube, Personio, and Workday Complex and interesting product: APIs, attribution models, recommendation engines, and more. Strong momentum: software companies need cost‑effective customer acquisition channels → we’re the solution. We have >10 M users on the Cello platform and work with iconic customers like Miro, Typeform and Veed. Become a central part of an experienced and passionate co‑founding team on our journey to a truly great company (ex‑Twilio, ex‑Wise, ex‑Skype, etc.), +40% of the team consists of former founders Your responsibilities You will define and own Cello’s design foundations, including principles, patterns, and a scalable design system You will lead end‑to‑end product design across core experiences, from early concepts to shipped product You will partner closely with product, engineering, and leadership to shape solutions early and holistically You will design clear, user‑centred experiences for end users, growth teams, partners, and developers You will shape how the Cello SDK integrates into customer products and how developers build on top of it You will use user research and product data to inform decisions, validate assumptions, and iterate quickly You will raise the design bar through hands‑on work, strong critique, and continuous improvement of how design is done You will ensure a coherent product and brand experience across key customer touchpoints, including the website About You ❤️ We value diverse backgrounds and encourage you to apply even if you didn’t follow the traditional career path. We’re always looking for individuals who can bring a new perspective. Required Senior experience in product / UX / interaction design (+7 years) Proven track record on products that scaled in users, complexity, or scope (ideally B2B SaaS or platforms) Strong interaction and visual design skills across complex, end‑to‑end flows Experience designing under real constraints and making trade‑offs with product and engineering Comfortable owning ambiguous problems end‑to‑end in a fast‑moving, high‑ownership environment Experience working alongside product and engineering to make difficult trade‑offs Nice‑to‑have Experience with embedded products, platforms, or developer‑facing tools Exposure to AI‑assisted or data‑heavy products Experience defining design systems or standards, ideally in early‑stage teams Not a fit if Your background is primarily marketing or brand design You rely on fully specified requirements or handoff‑based workflows You prefer people management over hands‑on product design You’re not comfortable with embedded, constraint‑heavy products Benefits ❤️ In the end, it’s all about the team and our culture. Understand why we love our job and see what it’s like to work at Cello in our People Playbook (bit.ly/cello‑people‑playbook). We have some compelling perks and benefits. About Us We are the Revenue Growth Infrastructure for digital businesses to acquire, retain, and monetize customers – at scale in the AI era. Cello turns word‑of‑mouth into a systematic growth channel across referrals, partners, and affiliates. Our referral platform allows users and affiliates to share and discover any software product with only a few clicks. By inspiring users to share the products they love, we are virtually reinventing how companies sell and market products. Category leaders including Typeform, Miro and Veed trust Cello to accelerate their growth flywheel. #J-18808-Ljbffr