AI-enabled Senior .NET Developer

We are seeking a Senior .NET Developer to join our team, focusing on the development of AI agents and supporting backend and frontend applications in a high-impact environment. You will play a key role in shaping innovative solutions that drive business value and client success.

If you are passionate about AI and eager to make a difference, we encourage you to apply!

Responsibilities

• Design and implement backend and full-stack applications, AI agents and platform components
• Build developer tooling, CI/CD and observability for safe, fast iteration
• Apply secure SDLC and privacy-by-design practices
• Perform TDD and BDD as part of everyday engineering practices
• Collaborate with cross-functional teams to deliver customer-focused solutions
• Use current LLM patterns (RAG, retrieval, routing, tool-use, evals) to deliver reliable, efficient AI systems

Requirements

• 5+ years of professional software engineering experience
• Strong full-stack development skills (C#, .NET Core, and ASP.NET Core, TypeScript, Angular and/or ReactJS)
• Experience with AI agents and implementing AI Software Development Life Cycle with maturity 2.5+
• Cloud experience (AWS/Azure/GCP)
• Skills in designing and implementing REST APIs
• Understanding of CI/CD principles and tooling
• Understanding of DevSecOps concepts, secure coding, and automated quality gates
• Excellent problem-solving and communication skills
• English proficiency at an Upper-Intermediate level (B2) or higher

Nice to have

• Experience with LangChain/LangGraph, vector/RAG systems or OpenSearch
• ML experience (training, deployment, monitoring)
• Understanding of LLMs, fine-tuning and model adaptation

Benefits

• 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