onsemi

Semiconductors for intelligent power and sensing

Administrative Assistant

Administrative SupportConfirmed live in the last 24 hours

Full-timeHudson, NH, USANo salary listedIn-person

About the Job

Requirements

Three to six years of administrative experience in a professional environment.
High school diploma or equivalent.
Experience supporting senior leaders, ideally in a fast-paced or technology-driven company.
Strong organizational and prioritization skills, including the ability to manage multiple tasks.
Excellent written and verbal communication skills with a professional, polished tone.
Advanced proficiency with Microsoft Office, including Outlook, Word, Excel, and 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.

Responsibilities

Provide administrative support to leaders and cross-functional teams in a corporate, global environment.
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 and order stock.
Interface with support organizations such as IT and Facilities to arrange and coordinate services for team members, and support office and cubicle assignments for the team.
Maintain organized digital filing systems and documentation using tools such as Teams and SharePoint.
Support site onboarding of new hires, including New Employee Orientation, system access requests, and SWAG ordering.

Desired Qualifications

Experience supporting executives or senior leadership.
Background ideally within semiconductor, technology, or manufacturing environments.
Familiarity with tools such as Oracle, online travel tools, travel management, and Purchase Requisition submissions.
Ability to anticipate needs and operate with a high degree of ownership.

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.

Requirements

3-6 years of administrative experience in a professional environment

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 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

Responsibilities

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

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.

About the Company

onsemi

Semiconductors for intelligent power and sensing

onsemi designs and manufactures semiconductors with a focus on intelligent power and sensing technologies for automotive and industrial markets. Its products include power management ICs and sensors that regulate energy, monitor conditions, and provide control signals for EVs, ADAS, factory automation, robotics, and energy infrastructure. The company differentiates itself by its specialized emphasis on intelligent power and sensing across both sectors and through its direct OEM relationships and global distributor network. Its goal is to improve energy efficiency and enable smarter, more capable systems for electrification, autonomy, and sustainable energy solutions.

Company size: 10,001+
Company stage: IPO
Headquarters: Scottsdale, AZ
Founded: 1999

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