Executive Assistant to Founders | Hybrid & High-Impact

SewerAI Corp; Walnut Creek (CA); Hybrid; USD 90,000 - 100,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

Equity

Flexible work

Learning budget

Unlimited PTO

Collaborative team

Job summary

SewerAI Corporation in Walnut Creek, CA is hiring an Executive Assistant to support two co-founders, managing calendars, travel, and day-to-day operations. This hybrid role requires 2 in-office days per week with remote work on other days.

You will handle complex scheduling, travel itineraries, board materials, and liaison with internal teams and external partners. Strong judgment and organizational skills are essential in a fast-paced startup.

Qualifications

• 3+ years of experience as an Executive Assistant supporting C-level or founder-level executives, ideally in a startup or fast-paced environment.
• Excellent judgment with confidential and sensitive information.
• Strong written and verbal communication — comfortable representing the founders in external-facing correspondence.
• Highly organized, detail-oriented, and able to juggle competing priorities without dropping things.

Responsibilities

• Manage complex, frequently-changing calendars for two co-founders, proactively resolving conflicts and prioritizing time against shifting business needs.
• Book and manage domestic and international travel, including itineraries, changes, and day-of issue resolution.
• Coordinate internal and external meetings end-to-end — scheduling, agendas, logistics, room/video setup, and follow-through on action items.
• Coordinate with home managers to flag prioritize and help manage at-home obligations against a very dynamic and demanding work schedule.
• Own light office management for the Walnut Creek office: supplies, vendor relationships, mail, seating/space needs, and general upkeep.
• Serve as a key point of contact between the founders and internal team, external partners, investors, and candidates.
• Prepare and organize materials for board meetings, investor updates, and leadership offsites.
• Handle expense reports and other administrative tasks with discretion and accuracy.
• Anticipate needs before they're asked — flagging conflicts, prepping context, and removing friction from the founders' day-to-day.

Skills

Executive support

Calendar management

Travel coordination

Communication

Tools

Google Workspace

Notion

Expense systems

Job description

SewerAI Corporation in Walnut Creek, CA is hiring an Executive Assistant to support two co-founders, managing calendars, travel, and day-to-day operations. This hybrid role requires 2 in-office days per week with remote work on other days.

You will handle complex scheduling, travel itineraries, board materials, and liaison with internal teams and external partners. Strong judgment and organizational skills are essential in a fast-paced startup.