Senior Administrative Assistant

Responsibilities

• Manage executive calendars, meetings, and communications to ensure effective time management
• Oversee office administration, including supplies, facilities, and day-to-day operations
• Coordinate travel arrangements and related expense reporting
• Serve as the primary point of contact for calls, visitors, and general inquiries
• Manage logistics, including deliveries, shipments, parking, and vendor coordination
• Coordinate food orders and catering for meetings and company events
• Oversee office and lab maintenance, repairs, and infrastructure to ensure a fully functional work environment
• Manage the full invoice lifecycle, including collection, review, coding, and accurate record-keeping of all incoming and outgoing invoices
• Coordinate supplier payments, including approvals, scheduling, and follow-ups to ensure timely and accurate processing
• Support financial operations in collaboration with the accountant, including expense monitoring, reporting and budget tracking, and day-to-day banking activities such as credit card reconciliation and issue resolution.

Requirements

• Bachelor's degree or equivalent work experience
• 3+ years of experience in office management, operations, or administrative roles, preferably in a dynamic environment
• Strong organizational and multitasking skills, with the ability to manage multiple priorities and meet deadlines
• Experience with financial operations, including invoice management, expense tracking, and basic bookkeeping processes
• Excellent communication skills, both written and verbal, with a professional and service-oriented approach
• High attention to detail and accuracy, particularly in financial and administrative tasks
• Ability to work independently, take initiative, and handle sensitive information with discretion
• Experience coordinating vendors, logistics, and office operations
• Strong problem-solving skills and ability to adapt in a fast-paced, evolving environment
• Proficiency in Microsoft Office and Google Workspace; experience with financial/ERP systems is an advantage
• Within the range, individual pay is determined by work location and additional factors, including, but not limited to, job-related skills, experience, and relevant education or training. If you are selected to move forward, the recruiting team will provide details specific to the factors above.
• Guardant Health is committed to providing reasonable accommodations in our hiring processes for candidates with disabilities, long-term conditions, mental health conditions, or sincerely held religious beliefs. If you need support, please reach out to Peopleteam@guardanthealth.com
• All your information will be kept confidential according to EEO guidelines.
• To learn more about the information collected when you apply for a position at Guardant Health, Inc. and how it is used, please review our Privacy Notice for Job Applicants .
• Please visit our career page at: http://www.guardanthealth.com/jobs/

Benefits

Additional Information

Company Description Guardant Health is a leading precision oncology company focused on guarding wellness and giving every person more time free from cancer. Founded in 2012, Guardant® is transforming patient care and accelerating new cancer therapies by providing critical insights into what drives disease through its advanced blood and tissue tests, real-world data and AI analytics. Guardant tests help improve outcomes across all stages of care, including screening to find cancer early, monitoring for recurrence in early-stage cancer, and treatment selection for patients with advanced cancer. For more information, visit guardanthealth.com and follow the company on LinkedIn , X (Twitter) and Facebook . Role Description This is a full-time on-site role responsible for managing administrative, operational, and financial activities to ensure smooth day-to-day office operations. The role includes executive support, office logistics, travel coordination, and financial administration (invoices and expenses).

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