Administrative Assistant

onsemi is seeking an experienced, highly organized, and proactive Administrative Assistant (AA) on a contract basis to provide comprehensive administrative and operational support within the Corporate Strategy Leadership for one of our clients in San Jose, CA. This is an onsite position and a contract role.

This role supports leaders across regions and time zones, including close collaboration with a leader based in Germany. The ideal candidate will be comfortable managing complex priorities, exercising sound judgment and discretion, and operating independently in a fast-paced, executive environment.

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Key Duties and Responsibilities

* Provide high-level executive administrative support within Corporate Strategy Leadership and team

* Support leaders operating across global regions, including regular coordination with a leader based in Germany, accommodating time-zone differences as needed.

* Manage complex executive calendars, including scheduling meetings, interviews, site visits, and cross-functional engagements.

* Coordinate logistics for leadership meetings, team events, offsites, town halls, and virtual sessions.

* Handle domestic and international travel arrangements and submit/reconcile executive expense reports.

* Support onboarding activities, including coordination of system access and site orientation when applicable.

* Manage administrative and office operations as needed, including invoice reconciliation, vendor coordination, shipping, and related operational support.

* Maintain a high level of confidentiality while handling sensitive information and executive matters.

* Create and maintain spreadsheets, trackers, documentation, and other tools to support business and operational needs.

* Provide professional support to visitors, candidates, and external partners.

* Identify opportunities to streamline administrative processes and improve efficiency.

* Complete special projects and ad hoc assignments as requested by leadership.

Qualifications / Requirements

* Bachelor's degree preferred or equivalent professional experience.

* Minimum 5+ years of experience supporting leaders in a fast-paced corporate environment.

* Demonstrated ability to support multiple leaders with competing priorities.

* Strong organizational, time-management, and prioritization skills.

* Excellent written and verbal communication skills with a professional executive presence.

* Highly collaborative, proactive, and able to work independently with minimal supervision.

* Proven ability to handle confidential and sensitive information with discretion.

* Strong problem-solving skills with the ability to anticipate leadership needs.

* Advanced proficiency in Microsoft Office (Outlook, Word, Excel, PowerPoint).

* Experience in building/maintaining Microsoft Teams/Sharepoint sites is highly desirable.

* Detail-oriented, adaptable, and comfortable managing shifting priorities.

* Willingness to work extended hours as business needs require, but will be kept to a minimum.

* Experience supporting global or cross-regional leaders is highly desirable.