Marcin is a Full-Stack Software Engineer, specializing in building production AI workflows, chatbots, and agents. He has participated in and managed the full lifecycle of LLM-applied products across startups and enterprises, where evaluation systems proved crucial for successful deployment and maintenance. With expertise in system integration and full-stack application development, Marcin brings a comprehensive approach to AI implementation - from architecture design through production operations. He combines software engineering rigor with practical AI knowledge to help teams ship reliable, testable AI products with confidence.