Senior Executive Assistant & Office Manager

About Tacit

We are an early-stage, deep tech startup based in San Francisco, developing innovative hardware that rethinks human-computer interaction. We are backed by General Catalyst, Khosla Ventures, and Greylock Partners, with a founding team from Stanford, BrainGate, Oculus, and Tesla. While we can’t reveal too much just yet, our team is tackling cutting-edge engineering challenges to bring revolutionary products to life.

We're looking for an Senior Executive Assistant and Office Manager to support our CEO and keep the office and employees running smoothly. You'll coordinate day-to-day operations, manage logistics, and keep the workspace organized, while supporting leadership with scheduling, communication, documentation, onboarding, HR/payroll administration, and immigration. The ideal candidate is resourceful, detail-oriented, and wants more business ownership than what a traditional EA job offers. Note this requires being on-site at our office in South Park 5 days/week.

• Executive Support

  • Manage the CEO's inbox: draft and respond to routine correspondence on his behalf.

  • Manage the CEO and CTO's calendars and scheduling end to end, including making sure they get to meetings on time.

  • Coordinate travel logistics, meeting prep, and follow-ups.

  • Draft and maintain internal documents, reports, and presentations as needed.

  • Take on ad hoc tasks that free up time (you're looking for ways to lighten the load, not just executing a fixed list)

• Recruiting & Onboarding

  • Coordinate our hiring pipeline such as scheduling interviews

  • Generate offer letters and manage new-hire paperwork.

  • Own onboarding logistics end to end so new hires have a smooth start.

• HR & Immigration

  • Own HR administration in Rippling, including payroll processing and handling compliance requests (EDD audits and similar) as they come up.

  • Own immigration end to end: sponsorship strategy, timelines, and the direct relationship with our outside immigration counsel.

  • Offboarding logistics.

• Office Management

  • Oversee everyday office operations and keep office space running smoothly (supplies, vendors, facilities)

  • Serve as the point of contact for employees on office-related questions.

  • Organize and execute team offsites and onsite gatherings (venues, travel, catering, activities, and budgets)

• Internal Process Support

  • Help keep recurring internal processes running such as meeting logistics, notes, and follow-up tracking for leadership touchpoints.

  • Flag process inefficiencies and help streamline workflows as we scale.

• Who You Are

  • 6+ years in executive support, office management, HR/people operations, or similar, bonus if you've been at a fast-growing startup.

  • Type A in the best sense: organized, proactive, and on top of the details.

  • Comfortable owning work with real compliance stakes (payroll, immigration, HR administration)

  • Strong written and verbal communication skills.

  • Technically proficient with Google Workspace, Slack, Zoom, and HRIS/ATS tools (we use Rippling and Ashby).

  • Prior exposure to immigration processes (H-1B and similar) is a real plus, not a requirement

  • Friendly, approachable, proactive in anticipating needs, and comfortable saying no on the CEO's behalf when it protects his time.

  • High ownership, low ego about scope. This role spans strategic-feeling work and unglamorous logistics, and you're equally good at both..

$124,000-$183,000/year plus equity

• Comprehensive medical, dental, and vision insurance

• Company size: 30-50 people

• Unlimited PTO

• 4% 401k matching