Administrative Assistant

onsemi is driving disruptive innovations to help build a better future—powering sustainable energy, mobility, and advanced electronics. As a global leader in semiconductor solutions, we operate in a fast-paced, high-performance environment where precision, collaboration, and professionalism are key.

We’re seeking a highly organized, polished, and proactive Administrative Assistant with demonstrated experience in a corporate environment. In this role, you’ll provide critical support to leaders and teams in our Operations and Manufacturing organization, ensuring seamless day-to-day operations and enabling business efficiency.

This is an excellent opportunity for a detail-oriented professional who thrives in a structured, technology-driven organization and enjoys being a trusted partner to leadership.

Responsibilities

Provide administrative support to leaders and cross-functional teams in a corporate, global environment

Manage complex calendars, including scheduling across multiple time zones and shifting priorities

Coordinate domestic and international travel, including itineraries and expense reporting

Prepare high-quality documents, presentations, and communications for business use

Facilitate meetings, including logistics, agendas, and follow-up actions

Serve as a professional point of contact for internal stakeholders and external partners

Handle confidential information with a high level of discretion and professionalism

Work with administrative assistants in other organizations to coordinate schedules, projects, and other initiatives

Identify opportunities to improve administrative processes and drive efficiency

Support projects and initiatives tied to business and operational priorities

Maintain team office supplies, ordering stock, etc

Interface with support organizations like IT and Facilities to arrange and coordinate services for team members and support office/cubicle assignments for the team

Maintain organized digital filing systems and documentation (Teams, SharePoint, etc)

Support site onboarding of new hires – New Employee Orientation; System access requests, SWAG ordering, etc.

Requirements

8+ years of administrative experience in a professional, corporate environment (required)

High School diploma or equivalent

Experience supporting senior leaders, ideally within a fast-paced or technology-driven company

Strong organizational and prioritization skills with the ability to manage multiple tasks

Excellent written and verbal communication skills with a professional, polished tone

Advanced proficiency with Microsoft Office (Outlook, Word, Excel, PowerPoint)

Experience managing complex calendars and coordinating across teams and regions

Close attention to detail and strong problem-solving capabilities

Ability to work independently while collaborating effectively across functions

Professional presence and a proactive, solutions-oriented mindset

Preferred Qualifications

Experience supporting executives or senior leadership

Background in a global corporation, ideally within semiconductor, technology, or manufacturing environments

Familiar with tools such as Oracle, online travel tools (e.g., travel management, Purchase Requisition submissions)

Professional presence and a proactive, solutions-oriented mindset

Ability to anticipate needs and operate with a high degree of ownership

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

More details about our company benefits can be found here:

https://www.onsemi.com/careers/career-benefits