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

1. Account Ownership & Commercial Success

• Own a book of business from small to enterprise accounts and drive measurable commercial outcomes

• Identify expansion opportunities and execute renewals and upsells

• Track AI agent usage and product adoption, proactively reaching out when customers underperform

• Lead workshops and training sessions to drive deeper product adoption

2. Technical Support & Problem-Solving

• Act as first point of contact for all customer requests and technical issues in your portfolio

• Debug technical problems across integrations, agent performance, and call quality

• Answer support tickets and ensure timely resolution

• Provide onboarding help to smaller accounts

3. Systems & Product Feedback

• Build and maintain workflows for tracking adoption, success metrics, and customer health

• Document playbooks, best practices, and internal processes to scale the success function

• Continuously improve internal and external knowledge bases

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

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