Full-stack Developer

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, is in production at over 70 companies, has more than 12,000 GitHub stars, and has hit GitHub trending several times. We recently raised a $7.5 million 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.

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, and UI engineering. Your job will be to create easy-to‑understand visualisations for our website and cloud solutions, actively shape our cloud platform, and take responsibility for the user experience of our customers.

What you’ll do

• Own the Cloud Frontend and Backend
• Develop and maintain the frontend of our cloud platform
• Implement new features end‑to‑end
• Integrate backend APIs and services
• Ensure performance, scalability, and clean architecture
• Manage state, routing, authentication, and API flows
• Improve UX based on product feedback and usage patterns
• Contribute to Product & Design
• Provide UI/UX input early in feature planning
• Translate product requirements into structured frontend architecture
• Improve design systems and component libraries
• Maintain a clean, scalable frontend structure

Requirements

• 7+ years of experience with modern frontend frameworks (React or similar)
• Know how to build and deploy Python services on Kubernetes (FastAPI)
• Experience with LLM APIs

Benefits

• Fast‑paced environment with effort rewarded and a strong salary, plus stock options
• Work at the frontier of AI, building a core infrastructure piece to enable self‑adapting agentic systems at scale
• Access to the San‑Francisco ecosystem and a chance to work from our office in the Bay Area
• Work from a beautiful office space in Kreuzberg, at one of the ‘coolest streets in the world', including free lunches