Hop

Principal AI Architect

Hop
Apply
5 months ago

Responsibilities

  • Define and own the architectural vision for next-generation AI systems, including novel agent architectures, reasoning systems, and proprietary model development.
  • Prototype and evaluate predictive modeling, autonomous signal synthesis, multimodal intelligence, and other breakthrough AI capabilities.
  • Establish data architecture, model serving, agent orchestration, and inference infrastructure for a long-term product roadmap.
  • Evaluate emerging AI paradigms such as multi-agent reasoning, RLHF, and retrieval-augmented fine-tuning.
  • Establish engineering standards, architecture review processes, and IP documentation practices.

Requirements

  • BS, MS, or PhD in Computer Science, AI/ML, or a related field; PhD or equivalent research depth is preferred.
  • At least 5 years of AI/ML engineering experience, including at least 2 years in a principal engineer or lead architect role.
  • Demonstrated history of building original AI systems that became products rather than implementing existing patterns.
  • Deep expertise in LLM training and fine-tuning, agentic system design, knowledge graph construction, and large-scale data modeling.
  • Ability to operate in greenfield environments with high ambiguity and ownership.
  • Patents, published research, or shipped products with clear proprietary differentiation are strong signals.
  • Must be authorized to work in the United States without current or future employer sponsorship.

Benefits

  • San Francisco, SoMa location with a minimum of four days per week in the office.

Categories

AI ResearchML Engineering
Hop

About Hop

11-50 employees
Contact me