Senior AI Engineer (LLM/RAG/LangChain/LangGraph)

We are seeking a Senior AI Engineer (LLM/RAG/LangChain/LangGraph) to join our software, system, and test engineering group.

You will design and develop agentic AI systems and multi-agent systems at scale using LangChain and LangGraph frameworks, with a focus on scalable, production-grade applications. Join us to leverage your expertise in Python, AWS, and data science to create advanced AI solutions for our clients.

Please note that for positions in Ukraine, we only consider candidates who are currently based in Ukraine or plan to return in the near future. Remote work is available only from Ukraine.

Responsibilities

• Design agentic AI systems and multi-agent systems at scale
• Develop production-grade AI applications using LangChain and LangGraph frameworks
• Implement retrieval-augmented generation (RAG) evaluation methods
• Build and maintain vector databases for AI data storage and retrieval
• Apply data science techniques to optimize AI system performance
• Collaborate with cross-functional teams to integrate AI solutions
• Ensure scalable and efficient AI system architectures
• Troubleshoot and resolve system issues and bottlenecks
• Stay current with AI and machine learning advancements
• Document system designs and development processes
• Conduct code reviews and enforce best practices
• Optimize cloud infrastructure using AWS services
• Support deployment and monitoring of AI applications

Requirements

• Strong experience in designing and developing agentic AI systems and multi-agent systems
• Proficient programming skills in Python with 3+ years of experience
• Experience with LangChain and graph frameworks such as LangGraph
• Proficiency in the Amazon Web Services (AWS) cloud platform
• Solid background in data science and data engineering methodologies
• Knowledge of algorithms, data structures, and machine learning techniques
• Experience with RAG evaluation and vector databases
• Ability to deliver scalable and production-grade AI solutions
• Excellent problem-solving and analytical skills
• Experience working in software, system, or test engineering environments
• Strong collaboration and communication skills
• B2+ level English proficiency

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)

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