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.

The remote option applies only to the Candidates who will be working from any location in Ukraine.

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

WE OFFER

• Work on a flexible schedule remotely or from any of our comfortable offices or coworking spaces in Ukraine
• Receive the necessary equipment to perform your work tasks
• Change projects and technology stacks within EPAM
• Gain experience in various business domains (Insurance, E-commerce, Healthcare, Finance, Travelling, Media, Artificial Intelligence, and more)
• Consider relocation options in over 30 countries worldwide
• Participate in volunteer, charity programs and communities (both technical and interest-based)
• You can plan your individual career path together with your manager
• Receive regular feedback from colleagues
• Improve your English for free with certified teachers (Speaking Clubs, client interview preparation courses, etc.)
• Get the opportunity to undergo free training and certification in AWS, GCP, or Azure Clouds
• Use the internal E-learn training program (18,200+ specialized training and mentoring programs)
• Access corporate accounts on LinkedIn Learning, Get Abstract and other partner resources
• Study at EPAM Solution Architecture School with the instructors who are practicing architects
• Develop as a leader, join Delivery Management, Resource Management, Leadership Essentials school and more
• Participate in internal communities (500+ meetups, technical discussions, brainstorming sessions, online events and conferences annually)
• Vacation and sick leave (including a sick leave without a medical certificate)
• A wide range of Voluntary Medical Insurance programs providing both medical treatment and various preventive options (including sports activities)
• Medical insurance for family members at corporate rates
• Company support during significant life events (childbirth or adoption, marriage, etc.)
• Support for psychological comfort: discounts on services from mental health specialists or coaches, thematic training
• E-kids program - a free programming language training program for EPAMers' children