We are seeking a highly experienced and technically exceptional Principal Software Engineer, AI to drive the architecture and hands-on development of AI-powered solutions across our next-generation unified payroll and labor compliance platform. As a senior individual contributor, you will combine deep software engineering expertise with modern AI/ML capabilities—including large language models (LLMs), NLP, IDP, and the Model Context Protocol (MCP)—to build intelligent, scalable systems that power automation and decision-making. This role is ideal for a self-driven engineer with mastery in Python, TypeScript, Node.js, and cloud-native architecture, capable of designing and delivering full-stack AI solutions that ingest, interpret, and operationalize complex business logic from contracts, policies, and structured/unstructured data.