Senior AI Python Developer

We are seeking a Senior AI Full Stack Developer who combines strong software engineering fundamentals with AI-augmented development practices. The ideal candidate is a self-starter with a solid Computer Science foundation, production-grade Python expertise, and demonstrated use of modern AI tooling — including prompt engineering and agentic coding workflows. This role is central to delivering enterprise-grade AI solutions, agentic platforms, and LLM-integrated systems.

Responsibilities

• Design, develop, test, and deploy production-ready AI-driven full-stack applications using Python
• Build scalable RAG pipelines, agentic workflows, and LLM-integrated systems using frameworks such as LangChain, LangGraph, CrewAI, or similar tools
• Develop backend services, including APIs, microservices, and data pipelines, along with modern frontend interfaces
• Write high-quality, maintainable, and testable Python code while leveraging AI coding assistants to accelerate delivery without compromising quality
• Integrate AI/ML models into enterprise systems ensuring reliability, scalability, and performance
• Apply advanced prompt engineering techniques for code generation, refactoring, debugging, testing, and documentation
• Design and implement agentic development workflows where AI agents handle multi-step tasks such as scaffolding, migration, and optimization
• Review, validate, and refine AI-generated code to meet production, security, and architectural standards
• Continuously explore and adopt emerging AI development tools, frameworks, and best practices
• Collaborate with Solution Architects, Product Owners, and cross-functional teams to translate requirements into technical solutions
• Participate in code reviews focused on quality, security, and engineering excellence
• Troubleshoot and resolve complex full-stack technical issues

Requirements

• Bachelor’s degree in Computer Science, Software Engineering, Mathematics, or related field; Master's degree preferred
• 5+ years of professional software development experience delivering production systems
• 4+ years of advanced Python development experience with deep knowledge of the language ecosystem, libraries, tooling, and testing frameworks
• Strong foundation in computer science fundamentals, including data structures, algorithms, systems design, and database theory
• Proven ability to write clean, performant, and production-ready code with strong ecosystem knowledge
• Experience with at least one additional language or stack for full-stack development
• Hands-on experience with modern front-end and back-end frameworks such as FastAPI, Django, Next.js, or React
• Experience working with relational, non-relational, and vector databases (e.g., Pinecone, Weaviate, Chroma, pgvector)
• Production experience with RAG architectures and LLM-based systems
• Experience with agentic workflows and multi-agent systems, including tool use, planning, and memory
• Familiarity with major LLM APIs such as OpenAI's API, Anthropic Claude, Google Gemini, AWS Bedrock, or Azure OpenAI
• Strong prompt engineering and optimization skills
• Practical experience with AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, or Amazon Q Developer
• Experience with at least one cloud platform (AWS, Azure, or GCP)
• Familiarity with Docker, CI/CD pipelines, and infrastructure-as-code
• Self-starter mindset with ability to independently drive tasks and solve problems
• Strong skills in analytical thinking, communication, and collaboration
• Experience working in Agile/Scrum environments
• Passion for continuous learning in AI and software engineering

Nice to have

• Experience with model fine-tuning or training custom AI models
• Familiarity with LLM evaluation and observability tools such as RAGAS, LangSmith, or Weights & Biases
• Experience with event-driven architecture and streaming systems
• Knowledge of AI security best practices
• Open-source contributions or technical writing experience
• Experience with graph databases such as Neo4j

We offer

• Opportunity to Engineer your Future and to drive the world’s digital transformation with top industry clients
• Personal development program that will allow you to be valued for your strengths
• Wide range of professional trainings and workshops
• Being part of a collaborative, fast-growing, and innovative design team
• Established and accelerated growth toward different career paths, competencies, and roles
• Broad projects variety and possible mobility between projects over the time
• Collaboration in a multicultural environment and exchange of best practices with colleagues around the world
• Varied social benefits, Sports, Transportation and Health programs
• Work-life balance and flexible schedule, team buildings and sport opportunities
• Modern office/collaboration spaces (incl. new Infinity Tower business center, Sofia)
• Hybrid By Design - we provide you with the best productivity options from the 2 worlds. Meet, socialize and enjoy F2F time with your colleagues, while working from the modern EPAM's office for a few days per week and benefit from the EPAM's virtual working environment - making you able to be productive and work from remote for the rest of the week