HopHR
Principal AI Architect
San Francisco, CA · Principal
No sponsorshipDetected 91 days ago
Machine LearningLLMsAgentic AIAI OrchestrationResearch
About the role
- We work with 250+ enterprise clients - including 5 of the Fortune 10 - processing 1B+ job descriptions, 850M+ professional profiles, and signals from 100+ labor databases.
- What we require • BS/MS/PhD in Computer Science, AI/ML, or related field.
Responsibilities
- LLM training and fine-tuning, agentic system design, knowledge graph construction, large-scale data modeling.
- Prototype and evaluate breakthrough AI capabilities - predictive modeling, autonomous signal synthesis, multi-modal intelligence - that create defensible IP.
Requirements
- Must be authorized to work in the US without current or future employer sponsorship.
Nice to have
- Evaluate and adopt emerging AI paradigms (multi-agent reasoning, RLHF, retrieval-augmented fine-tuning) before they are mainstream.
- Establish engineering standards, architecture review processes, and IP documentation practices for the team.
- BS/MS/PhD in Computer Science, AI/ML, or related field.
- PhD or equivalent research depth preferred.
Visa & Work Authorization
- PhD or equivalent research depth preferred. • 5+ years in AI/ML engineering with at least 2 years in a principal engineer or lead architect role. • Demonstrated history of building original AI systems that became products — not implementati
This listing is sourced directly from HopHR's careers page and normalized into a canonical job model.