about us

At telli, we're building the first AI-native phone system.

Since launching last year at Y Combinator (the same investors behind Airbnb, Stripe, Twitch, Coinbase, and others), we've grown >$2M in annualized revenue with a team of only 12 people.

Today, many companies fail in their customer communication not because they don't care, but because they can't keep up. The sheer volume of calls forces to rely on low-quality outsourced call centers or have their internal teams waste hours on repetitive calls.

With telli, our customers now rely on AI voice agents that handle their repetitive calls, freeing human to focus on what matters - talking to customers when it counts. The result: higher efficiency, happier teams, and better customer experiences.

Legacy phone systems weren’t designed for an AI-first world. That is why we are building the first AI-native phone system that lets companies manage both their human and AI teams on one platform.

Our founding team knows this problem inside-out. We ran a 150-person internal call center at Enpal. We know how difficult and expensive it is to scale high-quality customer experience with phone calls.

The opportunity is massive!!! and we're just getting started. We're on a mission to let every company provide a world-class customer experience by ending the era of low-quality call centers.

What You'll Do

Pilot Ownership & Commercial Success

• Own dedicated accounts during pilot phase and drive clear commercial outcomes (pilot conversion rate and revenue)

• Manage pilot projects end-to-end, ensuring all stakeholders are aligned and on track

• Identify expansion opportunities and execute upsells during pilot phase

• Act as trusted advisor to customers and help shape their AI strategies

Agent Development & Deployment

• Build, design, and refine AI agents that handle thousands of customer conversations daily

• Partner directly with engineering and customers to develop and ship production-ready agents

• Track agent performance against key success criteria and continuously improve

• Debug technical issues and provide hands-on support during pilot phase

Process & Customer Enablement

• Build, maintain, and improve workflows for customer onboarding, pilot management, and agent development

• Lead customer workshops and training sessions to drive product adoption

• Translate customer needs into actionable product feedback for engineering and product teams

• Document best practices and playbooks to scale the onboarding function

what makes you a great fit

• You really enjoy working with customers and help them succeed

• you’re tech-savvy (or have a semi-technical/technical background)

• you’re an excellent communicator in both English and German (additional languages are a big plus) - especially writing

• you’ve built workflows and AI agents and understand topics like prompt engineering and APIs

• (bonus) you have >1 year of experience in customer-facing roles (support, AM), ideally at a fast-growing startup

you may not make a good fit if…

• you have a pure business background but never worked with workflows and AI agents

• you only like ‘strategic’ work and don’t want to get your hands dirty

• you want to work 9–5 or remotely

perks

• above-market pay & equity

• access to any (AI) tool that makes you more productive

• gym subscription (urban sports)

• free dinner in the office

• regular off-sites with the team