Senior Administrative Assistant - Global Ops & Exec Support

onsemi; Hopewell Junction (NY); On-site; USD 36,000 - 62,000; Full time

Job summary

onsemi is seeking a highly organized Administrative Assistant to support leaders and teams in our Operations and Manufacturing organization. You will ensure seamless day-to-day operations, coordinate complex calendars across time zones, and manage travel and documentation for global initiatives.

The role emphasizes confidentiality, professional interaction with internal/external partners, and a proactive approach to improving administrative processes.

Qualifications

• 8+ years of administrative experience in a professional, corporate environment.
• High School diploma or equivalent.
• Experience supporting senior leaders in fast-paced tech environments.
• Strong organizational skills with multi-tasking ability.
• Excellent written and verbal communication with a professional tone.
• Advanced proficiency with Microsoft Office (Outlook, Word, Excel, PowerPoint).
• Experience managing complex calendars and coordinating across teams.
• High attention to detail and proactive problem-solving.
• Ability to work independently while collaborating across functions.
• Professional presence and ownership mindset.

Responsibilities

• Provide administrative support to leaders and cross-functional teams in a corporate, global environment.
• Manage complex calendars across time zones and shifting priorities.
• Coordinate domestic and international travel, itineraries, and expense reporting.
• Prepare high-quality documents, presentations, and communications.
• Facilitate meetings, including agendas and follow-up actions.
• Serve as a professional point of contact for internal and external stakeholders.
• Handle confidential information with discretion and professionalism.
• Collaborate with other administrative teams to coordinate projects and schedules.
• Identify opportunities to improve processes and drive efficiency.
• Support projects tied to business and operational priorities.
• Maintain team office supplies and stock.
• Coordinate IT and Facilities services and workspace arrangements.
• Maintain organized digital filing systems (Teams, Sharepoint).
• Support onboarding of new hires (Orientation, system access, swag).

Skills

Organizational skills

Prioritization

Written communication

Verbal communication

Problem solving

Independent work

Attention to detail

Team collaboration

Education

High School diploma or equivalent

Tools

Microsoft Office Suite

Job description

onsemi is seeking a highly organized Administrative Assistant to support leaders and teams in our Operations and Manufacturing organization. You will ensure seamless day-to-day operations, coordinate complex calendars across time zones, and manage travel and documentation for global initiatives.

The role emphasizes confidentiality, professional interaction with internal/external partners, and a proactive approach to improving administrative processes.