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ES

Lead AI Python Developer

EPAM Systems
🇧🇬 Bulgaria
Hybrid
Staff / Principal
2 months ago
  • AI
  • Python
  • RAG
  • Risk Management
  • System Design
  • Microservices
  • Event-Driven Architecture
  • CQRS
  • Domain-Driven Design
  • GraphQL
  • gRPC
  • FastAPI
  • Django
  • Flask
  • LangChain
  • LlamaIndex
  • PyTorch
  • scikit-learn
  • Hugging Face
  • vLLM
  • Ollama
  • LangSmith
  • Weights & Biases
  • RabbitMQ
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We are seeking aLead AI Python Developer to serve as a technical anchor and people leader for a high-performing AI team. This role combines deep technical contribution with hands-on leadership — setting technical direction, establishing engineering standards, mentoring developers, and personally driving the most complex aspects of AI SDLC and building complex Gen AI solutions. The ideal candidate brings a rigorous Computer Science foundation, mastery-level Python expertise, proven LLM expertise, and command of AI-augmented development practices at scale.

Responsibilities

  • Define the technical direction, architecture, and engineering standards for AI-enabled SDLC in collaboration with the Solution Architect and CTO
  • Lead the design and implementation of AI systems, including RAG pipelines, multi-agent platforms, and full-stack AI applications
  • Contribute hands-on to development by building complex components and conducting code reviews
  • Evaluate and select technologies, frameworks, models, and cloud services with a focus on reliability, security, and cost efficiency
  • Establish and enforce coding, testing, documentation, and AI tool usage standards across the engineering team
  • Mentor and support developers through feedback, guidance, and career development
  • Drive project planning, technical estimation, and risk management
  • Communicate technical solutions and trade-offs clearly to stakeholders

Requirements

  • 8+ years of software development experience, including 2+ years in a leadership role
  • Bachelor’s degree in Engineering or a related field; a Master’s or PhD is a strong advantage
  • Strong foundation in computer science fundamentals such as data structures, algorithms, distributed systems, and system design
  • Advanced Python proficiency with deep knowledge of the language ecosystem, libraries, ML/AI tooling, and testing frameworks
  • Experience with software architecture and design principles, including microservices, event-driven architecture, CQRS, SOLID, and domain-driven design
  • Experience designing APIs (REST, GraphQL, gRPC) and building full-stack applications using Python frameworks such as FastAPI, Django, or Flask
  • Experience with relational, non-relational, and vector databases
  • Hands-on experience with AI systems, including RAG architectures, LLM frameworks (LangChain, LlamaIndex), and agent-based platforms
  • Experience with Python ML/AI libraries and frameworks such as PyTorch, scikit-learn, Hugging Face Transformers, or similar
  • Self-starter with ability to drive initiatives independently and elevate team performance

Nice to have

  • Experience with LLM fine-tuning and open-source ecosystems (Hugging Face, vLLM, Ollama)
  • Familiarity with LLM evaluation and observability tools (RAGAS, LangSmith, Weights & Biases)
  • Experience with event-driven systems, Kafka, RabbitMQ, or graph databases
  • Exposure to multimodal AI applications (vision, audio, document processing)
  • Open-source contributions, SDK/platform development, or familiarity with AI governance frameworks

Lead AI Python Developer · EPAM Systems

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