Executive Assistant

Rillet serves accounting and finance teams. Our customers are the financial brains of their companies. Our job is to help them run the numbers with impossible speed, accuracy, and insight.

Rillet is an AI-native ERP that can drive a zero-day close. We are different because of our unified source-of-truth data model, hundreds of best-in-class native integrations (Stripe, Ramp, Salesforce, etc), automated & auditable workflows, multi-entity consolidation, and quickly expanding army of specialized AI agents (e.g., accrual, audit, P&L flux, board decks, etc). These earn us a consistently perfect customer satisfaction score. High-growth AI customers like Mercor, Windsurf, and Function Health love our ship velocity, because their financial stack needs to scale as quickly as they do.

This huge market is ours to take. We have raised $100M from leading investors (including Sequoia, a16z, Iconiq, Oak HC/FT, and First Round) to help everyone run their numbers at the speed of AI.

Rillet’s pace is not for everyone. Intelligence is table stakes. To succeed here, you need extreme speed, agency, and flexibility.

Successful Rilleteers do not wait for assignments. They internalize a mission, design a strategy, and bring back results that are better, faster, and more creative than a manager could have asked for.

Work revolves around our customers. Successful Rilleteers are energized by delivering the most important things, even those that weren’t in the original plan.

In this role, you do not need to be an accountant. But you do need to appreciate the value that our customers can create for their own company when we equip them with the perfect financial tools. Successful Rilleteers love powering the financial core of the world’s fastest-growing companies.

Rillet is seeking a highly organized and proactive Executive Assistant & Office Manager to support 1-2 senior leaders while overseeing the daily operations of our San Francisco office. This high-visibility role blends strategic calendar management with hospitality, ensuring executives are fully prepared and the workplace remains a seamless environment for employees and guests alike. Based in-office 3-5 days per week, this is a unique opportunity for someone who thrives in fast-paced environments and is eager to gain broad, cross-functional exposure at a category-defining startup.

We're looking for teammates who value in-person collaboration and are within commutable distance of our offices (or willing to relocate). Most team members are required to work in-office Tuesdays and Thursdays, plus one additional flexible in-office day. Certain roles may require additional in-office time based on function.

• 3+ years of experience in executive support, office management, or operations, ideally within a high-growth startup, VC, or tech environment.
• Mastery in managing complex, high-volume calendars and shifting priorities for multiple senior leaders or founders.
• Comfortable handling confidential information with maturity and absolute discretion.
• Able to pivot quickly from high-level strategic planning to hands-on execution (from board prep to moving furniture for an event).
• Exceptional written and verbal communication skills; you are comfortable hosting and interacting with founders, senior executives, and investors.
• Strong decision-making skills—you know when to escalate a situation and when to handle it independently.
• Proven ability to juggle multiple competing priorities and keep projects moving with minimal oversight.
• Comfortable in a rapid-growth environment where the "playbook" is still evolving.
• Excited to work 5 days a week from our San Francisco office.
• You enjoy being the “hub” of team energy and take pride in creating a clean, organized, and welcoming environment.
• You identify ways to improve the physical office space to align with company goals and culture.

• Manage complex, high-volume calendars for 1-2 executives across time zones; proactively resolve scheduling roadblocks while optimizing for business priorities.
• Maintain a high bar for responsiveness, providing updates and "over-communicating" to ensure the executive is never surprised by a change in plans.
• Serve as the primary point person for the SF office; oversee facilities, repairs, security, and IT/AV troubleshooting to ensure the space is always "guest-ready" and running smoothly.
• Welcome and host customers, candidates, investors, and partners; manage guest registration and conference room coordination to deliver a polished, high-end experience.
• Manage relationships with all office vendors (building, janitorial, internet, repairs, etc.) and oversee the office budget for supplies and programs.
• Develop and maintain the kitchen program, including daily snack/beverage restocking and coordinating lunch orders/catering for meetings and team events.
• Manage office access (keys/badges) and lead the physical onboarding for new SF employees (workspace setup, equipment, and orientation).
• Proactively update the team on maintenance schedules, outages, and office-wide relevant information.