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Senior Director, Context and Semantics Engineering (AI)

USA, CA, Pleasanton💼 Full-time💰 $281,600–$281,600🗓 2026-09-16 → 2026-09-26

Core

Lead the engineering organization building semantic layers, knowledge graphs, and dynamic context engines to ground Workday's AI agents in real-world HR and Finance data.

Role type

Senior Director, AI Infrastructure & Semantic Engineering

Builds

Scalable semantic engines, RAG pipelines, vector search infrastructure, and agentic memory systems

Domain

Enterprise AI, Data Architecture, HR & Finance

Deliverable

production ML models | infrastructure

Required skills

Distributed systems, semantic search architectures, LLM orchestration, vector databases, knowledge graphs, enterprise ontologies, RAG pipeline design, data privacy & RBAC, scaling engineering organizations

Preferred skills

Workday platform architecture, GraphRAG, advanced embedding models, highly regulated data environments

Technologies

Elasticsearch, Pinecone, Milvus, Neo4j, LlamaIndex, LangChain

Responsibilities

Build and mentor a world-class engineering organization; Define technical roadmap for semantic layer and vector search; Lead development of enterprise-grade RAG pipelines; Collaborate with C-level stakeholders on AI Agent Factory integration; Drive engineering design for agentic memory and state management; Enforce data privacy and compliance standards; Evaluate and integrate cutting-edge AI data technologies

Seniority

Senior, hands-on IC with executive leadership

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