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Sierra is the leading platform for customer-facing AI agents, serving major brands including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank. The company is headquartered in San Francisco with growing offices across North America, Europe, and Asia. Founded by Bret Taylor (former co-CEO of Salesforce, CTO of Facebook, co-creator of Google Maps) and Clay Bavor (18-year Google veteran who led Google Labs and Google's AR/VR initiatives), Sierra is transforming how enterprises deploy AI to serve customers.
As Executive Assistant, you will be a key operational leader supporting the executive team and helping establish Sierra's administrative infrastructure during a critical growth phase. Your responsibilities include:
- Proactively manage executive calendars, coordinating sales meetings, partnership discussions, discovery calls, and legal contract negotiations
- Ensure meeting effectiveness by preparing and distributing materials such as sales agreements, legal documents, and briefing materials
- Plan and execute internal events (team offsites, trainings, travel weeks) and support external events (happy hours, sporting events, leadership market tours)
- Establish new administrative systems and processes while building out the founding Sierra admin team
You will work in a fast-growing, values-driven environment (Trust, Customer Obsession, Craftsmanship, Intensity, Family) with a strong emphasis on in-person collaboration and cross-functional partnership.
REQUIREMENTS:
- 5+ years of Executive Assistant or similar administrative role
- Ability to build relationships and partner effectively with cross-functional teams and external partners
- Excellent time management, ability to shift priorities quickly, and anticipate needs proactively
- Strong organizational and analytical skills; ability to interpret and leverage data in workflow prioritization
- Must be in the London office 4 days per week with ability to travel with leaders as needed (approximately 1x per quarter)
- Advanced proficiency with Google Suite and Slack
- Preferred: experience in a fast-growing, in-person startup environment
