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Engineering, Voice AI

telli· Engineering
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Hybrid (Berlin)€75k - €160k + equityFull-timePosted 4mo ago

About the role

Engineering role focused on building and scaling AI-powered voice systems. Full-stack responsibilities with end-to-end ownership, contributing to core infrastructure, AI model integration, and delivering customer-focused voice AI solutions at scale in Berlin.

Responsibilities

  • Build reliable and scalable systems and own critical parts of the core infrastructure
  • Solve novel problems that come from working with Voice AI and scaling to millions of daily calls
  • Evaluate different models and ensure we push the limits of the technology for our customers

Qualifications

  • Velocity - everything you do, you do with speed
  • High Agency - 'I’ll figure it out' mentality
  • High Ownership - Nobody has to tell you what to do, you just do things
  • First Principles Thinking - understand the underlying problem
  • AI-pilled - heavily leveraging AI in your work
  • Strive in ambiguity - able to jump into novel ambiguous problem, understand the reason and solve it
  • Team thinking - optimize for the eng org output, not personal

Skills

Required:Distributed systemsAI model evaluationFull-stack developmentProblem solvingOwnership

Benefits

  • very competitive pay + equity package
  • access to any (AI) tools
  • free dinners if you stay late
  • urban sports
  • relocation support if you don’t live in Berlin
Last updated Sep 30, 2026. Interested? Apply on the company site.
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About telli

AI phone agents that convert

telli is building AI voice agents that convert leads into sales opportunities for B2C companies. For example, a leading home-buying platform is using telli to fully automate their pre-qualification. We are serving customers in energy, real estate, medical products, and home services. You might think that these B2C companies want to do more self-serve and less outreach. But the truth is outbound calls are what really drive conversion. Historically, managing these calls has been complex and expensive—costing companies hundreds of thousands of dollars. With telli, for the first time, B2C companies can automate the role of a pre-sales agent, end to end.

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