Sr. Office Administrator

Ultimate Staffing is seeking a Sr. Office Administrator to join a client in Milpitas. This is a temp to hire position. The role is 100% onsite with travel to their Oakland facility as needed.

Position Summary

The Office Administrator is a highly visible and high-impact role responsible for supporting senior leaders while ensuring operational excellence. Based primarily in Milpitas, this role blends executive-level administrative partnership, office and facilities management, hands-on operational support, and cross-functional coordination.

In addition to advanced administrative support, the Office Administrator plays a key role in shaping and strengthening administrative operations across locations. As the administrative function evolves, this position offers the opportunity to take on broader leadership and operational influence.

We are seeking a poised, resourceful, and relationship-driven professional who thrives in a fast-paced environment and represents the company with discretion, professionalism, and strong stewardship. This role includes regular front-desk coverage in the Milpitas office and active participation in daily office operations.

Key Responsibilities

Executive & Administrative Support

• Provide high-level administrative support to multiple leaders, including managing complex and competing calendars with accuracy and sound judgment
• Safeguard executive time by prioritizing requests and anticipating needs in dynamic or ambiguous situations
• Prepare and refine presentations, reports, correspondence, and internal communications
• Serve as a trusted liaison for internal and external stakeholders, maintaining strict confidentiality
• Proactively identify issues and deliver thoughtful, solutions-oriented support
• Partner with and provide coverage for other executives and administrative team members as needed

Office Management & Operations

• Oversee daily operations for the Milpitas office and support operational coordination for the Oakland location
• Provide guidance and oversight to Office Coordinators in Milpitas and Oakland to ensure alignment with company standards and expectations
• Manage office budgets, expense tracking, and procurement activities
• Source and manage office supplies, equipment, furnishings, and vendor services with a focus on cost efficiency and quality
• Develop,

  All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance.