On-site Executive Assistant & Office Operations Lead

Prismhr Hire; Pleasant Hill (CA); On-site; USD 65,000 - 90,000; Full time

Job summary

Prismhr Hire in Pleasant Hill is seeking a highly organized Executive Assistant & Office Administrator to support executive leadership and the day-to-day operations of the Pleasant Hill office. This full-time, on-site role runs Monday–Friday, 8:00 a.m.

to 5:00 p.m., requiring discretion and the ability to handle a fast-paced entrepreneurial environment. Responsibilities include managing calendars, coordinating meetings and travel, drafting communications, tracking action items, preparing

Qualifications

• 3–5 years supporting senior executives or C-suite
• Strong organizational, calendar-management, and time-management skills
• Excellent written and verbal communication
• High discretion, professionalism, and sound judgment
• Proactive, resourceful, and independent work style
• Experience coordinating meetings, travel, and executive communications

Responsibilities

• Manage executive calendars, appointments, meetings, and scheduling priorities.
• Coordinate internal and external meetings; prepare agendas, documents, and presentations.
• Track commitments, deadlines, action items, and follow-ups.
• Draft and format emails, correspondence, and meeting materials.
• Handle confidential information with discretion and professionalism.
• Coordinate domestic and international travel; manage itineraries and logistics.
• Assist with expenses, receipts, and travel-related admin follow-up.
• Attend meetings, take notes, and document decisions and action items.
• Support project coordination and maintain deadlines and deliverables.
• Oversee Pleasant Hill office operations: vendors, supplies, files, and organization.

Skills

Calendar management

Time management

Communication

Discretion

Organizational skills

Proactive mindset

Tools

Google Workspace

Microsoft Office

Job description

Prismhr Hire in Pleasant Hill is seeking a highly organized Executive Assistant & Office Administrator to support executive leadership and the day-to-day operations of the Pleasant Hill office. This full-time, on-site role runs Monday–Friday, 8:00 a.m.

to 5:00 p.m., requiring discretion and the ability to handle a fast-paced entrepreneurial environment. Responsibilities include managing calendars, coordinating meetings and travel, drafting communications, tracking action items, preparing