CareerPlan

Principal Software Engineer

Santa Clara, CALIFORNIA, usFull-time$221k–$387k2026-11-10 → 2026-11-12

Core

Design and implement scalable data infrastructure (data lake, context graphs) and AI/LLM integration for enterprise applications.

Role type

Principal Software Engineer (Data Platform & AI)

Builds

Lakehouse table services, context graph ingestion, ontology-grounded retrieval systems, and AI agent interfaces.

Domain

Enterprise Data Infrastructure & Generative AI

Deliverable

production ML models

Required skills

Distributed systems, Cloud-native architecture, Data modeling (relational/graph/columnar/streaming), Python, LLM production engineering, Ontology/Semantic modeling, FastAPI, LangChain/LangGraph

Preferred skills

Knowledge graph optimization, LLM fine-tuning, Data governance, OpenAPI standards

Technologies

Iceberg, Polaris, Trino, Spark, Kafka, Kubernetes, FastAPI, LangChain, LangGraph, MCP

Responsibilities

Lead technical architecture for core data components, Design LLM and ontology integration, Drive product adoption from early release, Set AI-native engineering standards, Conduct deep architecture reviews, Align cross-functional dependencies

Seniority

Principal, hands-on IC with strategic influence