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.

Kindly note that this role supports remote work, but only from within 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

• With us you can:

• 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)

• Relocation opportunities may be available for eligible candidates, depending on the role and openings at other EPAM locations

• Participate in volunteer, charity programs and communities (both technical and interest-based)

• We focus on your professional growth:

• 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)

• What we offer:

• 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

Kindly be advised that the set of benefits, including learning, certification, and other opportunities, may vary depending on the role you apply for. Our recruiter will be able to share more details about the specific opportunity during your general interview.

EPAM strives to provide its global team of over 62,350 professionals in more than 55 countries with opportunities for professional growth from day one of collaboration. Our colleagues are the source of EPAM's success, so we value cooperation, strive to always understand our clients' business and aim for the highest quality standards. No matter where you are, you will join a dedicated, diverse community that will help you realize your potential to the fullest.