Founding Designer

About UsAt telli we are building AI voice agents that are reshaping an entire industry.Since launching 8-months ago, we raised a $3.6M pre-seed round from Cherry and Y Combinator and grew to >$1M in ARR. We are looking for a team members who want to go all-in to help us achieve the next milestone: $10M in ARR.Two of our co-founders Finn and Philipp previously scaled the heat pump unit of energy unicorn Enpal from 0-150 people. They've seen the ins and outs of scaling phone-based customer processes. These businesses are rushing to deploy AI voice agents. However, creating a demo is easy — building reliable agents that handle millions of calls in production is incredibly hard.In a world where intelligence becomes a commodity, it is up to us builders to craft new product experiences that let people harness the power of AI.But building AI voice agents comes with challenges:What is the most intuitive way for humans to build and adjust their own AI agents?How do you build agents that work reliably across millions of calls in a world of non-determinism?How do you ensure that customers can use the latest foundational models without having to understand the technical trade-offs?How do you enable companies to build hybrid teams of human and AI agents?What does human-computer interaction look like if, instead of having UI elements, you have a hyper-intelligent sidekick?These are unsolved problems. Problems that haven't existed since the invention of computers. Solutions that worked in a pre-LLM world won't work today. Nobody knows how to solve these problems; it's up to us to figure it out.We’re a small, fully in-person team based in Berlin. Even though most people have told us to build this company in SF because of “better talent” - we know there is amazing talent in Europe. We believe you can build a multi-billion dollar software company in Europe, and there is no better time to do this than now.About The RoleThis is a high-ownership role for a founding designer who cares about velocity and solving real customer problems. You won't just create mockups, you will own the entire design process end-to-end, speaking directly to customers and making core product and UX decisions. In short, you’ll have a significant impact on the direction of our high-growth, ambitious product.You'll be our first full-time designer — with ownership over UX and UI across the entire product. This means you need to be comfortable designing for complex, AI-first workflows while maintaining the simplicity that makes our product accessible to non-technical users.what you will dowork closely with our customers, understand their problems, and design product experiences that solve their challengesown the end-to-end design process for features that process and analyze thousands of AI phone calls a daybuild prototypes and test product hypothesis with customerscreate intuitive interfaces that make sense in an AI-first world where traditional UI patterns don't applycollaborate directly with engineers to ship high-quality features quicklylead user research projects across the companyyour profileyou have worked as a product designer, ideally in an early-stage companyyou love speaking to customers directly to identify pain points and problemsyou have owned the development of product features, ideally in B2Byou feel comfortable shipping frontend changes (React/Tailwind) to productionyou don't just express designs in Figma, but also feel comfortable with tools like v0, Lovable, Cursor, etc. to build usable prototypesyou're a high-agency generalist who can work across the entire productyou have a deep interest in AI and large language models and are excited about the unique design challenges of voice AI interfaceshave thrived in high-ambiguity environments: resolving uncertainty, embracing failure, and crystallizing what matterscare about building reliable, production-ready experiences (not just demos), but aren’t afraid to dive immediately into a problem and prototype without needing too much inputwhat makes you a great fityou align with our principlesyou take full ownership of projectsyou want to work in-person in Berlinyou know what it takes to succeed in a fast-paced, high-ambiguity environmentyou know how to prioritize high-leverage workyou want to work with a smart and driven team with (self-reported) low egoyou want to help build a multi-billion dollar company from the ground upstrong portfolio showcasing your work on complex, user-centered productsproficiency in modern design tools (Figma, etc.)experience designing for both web and mobile platforms(bonus) you speak German natively (our biggest customers are German-speaking)you may not make a good fit if…you prefer a remote-first environmentyou like to work on your own with minimum collaborationyou have no prior experience in software engineering teamsyou only want to work on visual design instead of the entire user experienceyou think AI is just "hype" and doesn't provide real valueyou want to work 9-5perksabove-market pay & equityaccess to any (AI) tool that makes you more productivegym subscriptioncompany trip to San Francisco in fall 2025