This is a remote position.
We are seeking a Senior AI Engineer with a strong background in Node.js and hands-on experience integrating AI and LLM-based solutions into scalable backend architectures. This is not a traditional data scientist role — we’re looking for an experienced software engineer who understands both backend system design and how to leverage modern AI tools such as LangGraph , LangChain , and Vector Databases .Architect and implement backend services for AI-powered systems and tools
Build intelligent agents and automation workflows using LangGraph or LangChain
Connect and operate Vector Databases (e.g., Pinecone, Weaviate, Chroma)
Lead and maintain Node.js-based backend architectures
Design and optimize prompt workflows for AI integration
Integrate external APIs and third-party AI services (OpenAI, Anthropic, etc.)
Collaborate with frontend developers and product stakeholders to deliver seamless solutions
Minimum 4 years of software development experience (Node.js preferred)
At least 2 years of experience working with AI/LLM applications
Hands-on experience with LangChain, LangGraph, or similar frameworks
Solid knowledge of vector databases and retrieval-augmented generation pipelines
Strong background in API design, prompt engineering, and deployment best practices
Proficiency in both Node.js and Python
Fluent in Polish and English (C1 level)
Experience building AI co-pilots, chatbots, or conversational AI tools
Working knowledge of React or Next.js for integrating backend and UI
Familiarity with LLM providers such as OpenAI, Anthropic, or Gemini
