Principal Software Engineer (Python)

Principal Software Development Engineer to lead the design, development, and testing of complex software systems and applications. Driving engineering excellence, providing technical leadership, and mentoring engineering teams. Lead the evolution of the Semantic Layer Web Service into a high-scale, automated intelligence platform, expanding from 130 attributes to thousands. Bridge internal tools with an automated, GraphRAG-enabled enterprise ecosystem. Responsibilities include architecting and evolving the Semantic Layer, serving as the primary technical lead for Knowledge Representation and Semantic Search, implementing GraphRAG-based hybrid graph/vector search, building high-performance backend services with Python, FastAPI, and related tooling, collaborating with Data Science for LLM/SLM-driven workflows, automating metadata ingestion, establishing automated evaluation frameworks, conducting expert code reviews, and driving TDD practices to ensure reliability and scalability. Qualifications emphasize advanced Python/AI stack expertise, knowledge representation and ontologies, vector databases and hybrid search, AI orchestration with model abstractions, rigorous evaluation frameworks, cloud deployment (GCP/AWS/Azure), and strong leadership to guide cross-functional teams and engineering PODs.