Full-stack Developer
Cognee
Full-stack Developer
Cognee
AI memory and knowledge graphs
Topoteretes UG (haftungsbeschränkt) · Berlin, Germany (Hybrid) · Full-time · Posted 2026-03-29
Salary: EUR 70,000–110,000
Workplace: hybrid
About Cognee
Cognee is building the knowledge engine for AI agents to adapt and learn from feedback. We provide a developer tool for engineers and data scientists to build agentic systems that work in critical workflows – at scale. Our open-source Python SDK runs 1,000,000+ times per month, it is in production at 70+ companies, we reached 12k+ GitHub stars and hit GitHub trending several times.
We recently raised a $7.5m seed round from Pebblebed Ventures in San Francisco, founded by the founding engineers of OpenAI and the Facebook AI Research Lab. We are now transitioning into a period of high growth and are looking for someone to create the vision we have for our customers starting with their first interaction with our website and cloud application. You’ll join a small, driven group of people who work closely together, support each other, and work towards the shared goal of building a generational AI infrastructure company.
Role Overview
The Full-Stack Developer supports Cognee’s design, product and growth teams and is responsible for user experience, usability engineering, industrial and graphical UI design, localization as well as UI engineering. Given the abstract nature of our product, your job will be to create easy to understand visualisations for our website as well as cloud solutions. By actively shaping our cloud platform, you will take active responsibility in the user experience of our customers and actively shape the success of Cognee. It is an ideal role for someone who enjoys creative development, ownership and impact in a fast-paced startup environment.
What you’ll do:
1. Own the Cloud Frontend and Backend
2. Contribute to Product & Design
Here is what we’d like you to bring to the table:
Apply at Topoteretes UG (haftungsbeschränkt)
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Cognee is an AI infrastructure provider based in Berlin that builds a structured memory layer for AI systems and agents. Its open-source stack converts unstructured enterprise data into persistent knowledge graphs and semantic representations so agents can retain context, reason across connected information, and reduce hallucinations compared with stateless retrieval or short context windows. The product helps organizations run knowledge-intensive workloads in regulated domains by maintaining long-term memory and reliable graph-based representations in production. Cognee differentiates itself from competitors by offering a persistent memory layer and knowledge graph technology that keeps context across sessions and data sources, emphasizing enterprise reliability and production-grade deployment. The company’s goal is to enable AI systems to retain context over time, reason across connected information, and operate in real-world enterprise environments at scale.
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