AI Engineer

Job Description 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 . Key Responsibilities 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 Requirements 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) Nice to Have 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 Benefits Solid, competitive salary. Work in multilingual, multinational and multicultural environment on international projects Medical care