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telli Tech Stack

AI-powered phone automation for customer-facing operations

Technology, Information and Internet Berlin, Berlin 11–50 employees Privately Held

Telli builds an AI phone system using Twilio, Node.js, and TypeScript to automate high-volume customer calls. The stack reveals a product-led engineering approach: they layer n8n and Zapier for workflow automation on top of voice infrastructure, paired with React frontends and PostgreSQL persistence. Active hiring is concentrated in ops and marketing (7 of 12 roles), suggesting a shift from engineering validation toward scaling go-to-market—a common pattern for voice/AI products moving from MVP to customer traction.

Tech Stack 14 technologies

What telli Is Building

Challenges

  • Reliance on low-quality outsourced call centers
  • Difficulty scaling high-quality customer experience
  • High volume of calls causing inefficiency
  • High-volume repetitive calls
  • Scaling voice support for businesses
  • Long waiting queues
  • Unhelpful support agents
  • Endless hold music
  • Voice scaling challenges

Active Projects

  • Ai-native operating system
  • Build repeatable marketing playbook
  • Internal tools for scaling
  • Customer onboarding and expansion
  • Custom solutions for clients
  • Internal tooling improvement
  • Creating telli’s gtm engine
  • Building processes with ai automation-first approach
  • Automation-first core business processes
  • Intuitive user experiences for ai-first world

Hiring Activity

Steady10 roles · 4 in 30d

Department

Ops
4
Marketing
3
Engineering
2
Design
1
Sales
1
Support
1

Seniority

Mid
7
Intern
3
Senior
2
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About telli

Telli is a Berlin-based AI phone automation platform that replaces traditional call centers and customer support queues with conversational AI. The company targets businesses handling high volumes of repetitive inbound or outbound calls—support, sales, onboarding, and account management workflows. Their operating model combines AI-native core processes with custom client solutions, reflected in active projects around internal tooling, GTM engine development, and customer expansion. At 11–50 employees, they are hiring steadily across operations and marketing roles while maintaining a mid-level seniority distribution.

HeadquartersBerlin, Berlin
Company Size11–50 employees
Hiring MarketsGermany

Frequently Asked Questions

What technology does Telli use to power phone calls?

Telli's stack includes Twilio for voice infrastructure, Node.js and TypeScript for backend logic, n8n and Zapier for workflow automation, React for frontend UX, and PostgreSQL for data persistence. They also use Temporal for orchestration and Modal for compute.

Where is Telli located and hiring?

Telli is headquartered in Berlin, Germany, and all current hiring is in Germany. The company has 11–50 employees and is hiring at steady velocity across multiple departments.

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