Principal Python Engineer

Topoteretes UG (haftungsbeschränkt)
📍 Berlin, Berlin, Germany 💼 Full-time 🕒 Posted February 28, 2026

Job Description

Cognee is building the memory engine + data plane for AI agents to plan, reason, and act. Our open-source Python SDK is in production at 70+ companies, hit GitHub Trending, and runs 550,000+ times per month. We've won early customers (including top-10 Pharma) and recently raised a large Seed.

We are looking for a Principal Engineer / Lead for the Python SDK to own the technical vision, architecture, and execution of Cognee's primary developer interface. This role is critical: the Python SDK is the product for most users. You will set the standard for SDK quality, ergonomics, performance, and long-term maintainability, while working closely with platform, infra, and product teams to ensure Cognee feels world-class for developers.

What You Will Build

SDK Architecture & Technical Vision Define and own the long-term architecture of the Cognee Python SDK, ensuring clarity, extensibility, and stability as usage scales.

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Job Details

  • Location Berlin, Berlin
  • Job Type Full-time
  • Category Computer Occupations
  • Posted Date February 28, 2026
  • Application Deadline April 09, 2026