telli was founded in 2024. We were part of the YC Fall ‘24 batch. In the last couple of months, we’ve grown to 6-figure ARR and raised a $3.6M seed from investors including Cherry Ventures, Y Combinator, and great strategic angels

about us

At 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 role

This is the perfect role for someone early in their career (e.g. recent grad) who wants to get deep exposure to how startups operate, work directly with customers, and help scale AI products in the real world.

AI is transforming how companies run their customer communication. As a AI Operations Intern , you’ll work closely with the founders and our customers to make sure everything runs smoothly. You’ll help onboard new customers, support and expand existing ones, and improve the internal processes that make telli scale.

If you’re organized, proactive, and love working at the intersection of product, customer, and operations, this role is for you.

what you’ll be responsible for

• own full customer journeys including helping onboard and expand customers using our AI agents

• supporting day-to-day operations and customer communication

• build custom solutions for clients

• managing customer feedback and identifying growth opportunities

• collaborating with product and engineering to improve internal tooling

• building and documenting scalable processes

• diving into data and tools (like n8n & Zapier)

• preparing materials and insights for team and customer meetings

what makes you a great fit

• you’re a strong communicator in both English and German

• you’re tech-savvy (or have a semi-technical background) and curious about how AI agent products work

• you’ve worked on projects or side hustles that show initiative and drive

• you’re organized, hands-on, and not afraid of doing unglamorous work

• you love solving problems and figuring things out on your own

• you’re early in your career and hungry to learn fast

• you’re excited to help build something from the ground up

you may not make a good fit if…

• you only want to do high-level “strategic” work

• you aren’t comfortable juggling multiple tasks at once

• you don’t enjoy working directly with customers or in dynamic environments

• you’re not interested in AI, tech, or startups

• you’re only looking for a typical 9–5 internship

our tech stack includes TypeScript, React, TanStack, Node, Python, Postgres as well as Temporal.io and Pipecat. But more than familiarity with any specific technology, we value a customer-centric approach and ability to ship end-to-end features.