Engineering Director, AI Engineering

Hex•San Francisco, CA
•Hybrid

About The Position

Hex is hiring its first leader for its AI engineering team. The team combines research and technology to build AI-powered data products, and values both deep engagement with research and shipping features in close collaboration with customers. The role partners with the CEO and CTO to set and execute research strategy, manages research partnerships, shares research outcomes through technical content, and hires and leads AI engineers and researchers. The position is based in either Hex’s San Francisco or New York office. Employees are encouraged to work from the office at least twice a week, with Tuesdays and Thursdays as the main in-person days. Hex’s product is a web-based notebook and app authoring platform. Its stack includes TypeScript, React, Apollo GraphQL, Redux, Express, Postgres, Redis, Kubernetes, Python kernels, Terraform, Helm, and AWS. The salary range is $320,000–$425,000. Hex also describes its total rewards package as including market-benchmarked salary and equity, comprehensive health benefits, and flexible paid time off.

Requirements

  • At least 5 years leading applied research, AI engineering, or ML engineering teams.
  • Deep expertise in modern AI technology and classical ML systems, including LLMs and transformer models, agentic workflows, context management, and agentic evaluations.
  • Passion for delivering exceptional AI-backed product experiences and a strong focus on business outcomes.
  • Strong communication and collaboration skills, including the ability to empower and develop product and engineering counterparts.
  • Ability to attract and retain exceptional AI talent.

Nice To Haves

  • Experience working with reinforcement learning environments.

Responsibilities

  • Partner with the CEO and CTO to define and execute research strategy across post-training, model evaluation, search and retrieval, and continuous learning.
  • Manage research partnerships with a range of partners, from small startups to major labs.
  • Drive the production of high-quality technical content that shares Hex research outcomes externally across a variety of audiences and platforms.
  • Hire and manage a high-performing team of AI engineers and researchers.

Benefits

  • Market-benchmarked salary and equity.
  • Comprehensive health benefits.
  • Flexible paid time off.
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