Lead Python Developer (AI, LLM)

We are seeking a highly skilled Lead Python Developer to spearhead the implementation of a sophisticated chatbot using LangChain or LlamaIndex, with a strong emphasis on leveraging Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG).
The ideal candidate will have extensive experience in Python and a deep understanding of tools, embedding strategies, semantic search, vector search, and vector databases. Additionally, the role involves working on various spikes, POCs, and research-oriented tasks.
Responsibilities
Lead the development of chatbot solutions using LangChain or LlamaIndex with a focus on LLMs and RAG
Research and implement embedding strategies, semantic search, and vector search to enhance system performance
Design, develop, and maintain robust Python applications, ensuring adherence to best coding practices
Collaborate across teams to conduct spikes and build proof-of-concepts (PoCs) for innovative AI functionalities
Develop and integrate vector database solutions such as Pinecone, Faiss, or similar
Optimize application performance, ensuring scalability and efficiency in AI-driven systems
Implement error handling, logging mechanisms, and monitoring using OpenTelemetry
Maintain and support the .NET components of the application, including MS Teams bot integrations and other services
Conduct architectural reviews and provide technical leadership on AI-related initiatives
Ensure compliance with software lifecycle processes, assisting with code reviews and testing frameworks
Requirements
5+ years of experience in Python programming, with a focus on developing complex applications
1+ years of leadership experience in relevant roles
Deep understanding and hands-on experience with Large Language Models and Retrieval-Augmented Generation techniques
Proven experience with LangChain or LlamaIndex for chatbot development
Strong knowledge of embedding strategies, semantic search, and vector search methodologies
Proficiency in working with vector databases such as Pinecone, Faiss, or similar
Experience in implementing tracing and monitoring using OpenTelemetry
Expertise in designing robust error-handling and logging mechanisms
Commitment to writing clean, maintainable, and scalable code, with a strong understanding of software development best practices
Residence in Ukraine (remote work is eligible only for candidates based in Ukraine)
Nice to have
Knowledge of Microsoft Azure