Chief of Staff

This is a 5 day in office position in our downtown San Francisco office.

About Us

Preference Model is building automated ML research engineering.

Existing frontier models are brittle when applied to real-world ML tasks. The present bottleneck is the lack of high-quality RL training environments. Our first step is to build RL environments that reflect real-world complexity, with diverse tasks and robust reward functions.

Our founding team has previous experience on Anthropic’s data team building data infrastructure, and datasets behind Claude. We are partnering with leading AI labs to push AI closer to achieving its transformative potential.

About the Role

We are hiring a Chief of Staff to own how Preference Model runs internally, so the founders spend their time on customers, fundraising, and strategy. You will own finance operations, vendors, events, the office, and team knowledge, and you will support HR and Recruiting.

You will report to a co-founder and be our go-to operations individual.

What You Will Do

• Vendor Management:

• Own vendor management end to end.

• Build one list showing owner, cost, and renewal date, and renegotiate or consolidate where we are overpaying

What We are Looking For

• You have owned operations at a company under 100 people, and you built the systems rather than inheriting them

• You are comfortable on the finance side of operations.

• You notice details others miss, catch the double charge, the auto-renewal nobody noticed, and the seat count nobody updated, and then you build the checklist so it cannot happen twice.

• You make the people around you faster. You take on unglamorous work without being asked, you defuse tension rather than escalating it, and new hires learn how we work by watching you

• You over-communicate by default and keep it short. Frequent updates and nobody has to chase you for status

• You represent the culture of the company.

• You prioritize ruthlessly and adapt fast.

Nice to Have:

• Familiarity with the modern operations stack (spend tools like Brex or Ramp, an HRIS like Rippling or Gusto, Notion, or close equivalents).

• Experience planning conferences, offsites, or field events against a real budget

• Experience in a candidate-facing role, even informally

• Experience as the first operations hire at a fast-growing startup

What We Offer:

• Competitive cash and equity compensation

• Ownership and autonomy in a fast moving startup environment

• Opportunity to work with top Machine Learning Engineers

• Health, Vision, Dental, benefits

• 401K match

• Lunch provided daily, and a weekly snack order