representation-learning jobs in San Diego

Principal Engineer leading NLP innovation at enterprise scale, responsible for developing retrieval-augmented generation architectures, agentic AI workflows, and production language systems that process petabytes of data. Design knowledge graphs, semantic layers, and ontology-aware language understanding systems while optimizing inference for latency and cost.…See more Drive large-scale model improvements through prompt engineering, fine-tuning, and reinforcement learning, and mentor senior engineers to establish NLP best practices across the organization.