The Administrative Assistant plays a key role in supporting the day-to-day operations of the Critical Mass office. This fully on-site position is the first point of contact for employees and visitors, requiring someone who is organized, approachable, and proactive. The ideal candidate brings a positive attitude, handles multiple tasks with ease, and enjoys working in a dynamic, fast-paced environment. This role is essential to keeping the office running smoothly and efficiently.

Please note: This is a contract position only. You Will

• Handle a wide and complex variety of administrative support duties and tasks such as owning schedules, managing calendars, booking travel and running errands (new hire support, Christmas shopping, lunch orders etc.)
• Serve as the first point of contact for visitors and manage reception duties
• Act as liaison with building facilities: submit tickets, manage seating plans, and coordinate logistics
• Coordinate new hire onboarding, including laptops, badges, desk setup, and supplies, etc.
• Oversee incoming deliveries, office shopping, and general office maintenance
• Maintain confidence and protect operations by keeping information confidential
• Coordinate new hire onboarding, including laptops, badges, desk setup, and supplies, etc.
• Manage ordering, inventory of office and desk supplies
• Provide vacation coverage for other administrative staff

You Have

• 2-3 years of professional experience as an Administrative Assistant or Office Manager
• Superior communication skills, both oral and written and excellent word processing skills
• A stickler for detail and takes ownership of tasks and drives through to completion
• Ability to prioritize and meet tight deadlines
• Must work well under pressure and adaptable
• Customer service focused attitude
• Highly organized, self-motivated, and able to manage multiple priorities in a busy environment
• Willing to learn or familiarity with Outlook, Microsoft Teams, Jira, and internal systems is a plus
• Opportunity to work within a collaborative, people-oriented company culture

The Talent Team at Critical Mass is focused on ensuring we provide the best training, onboarding, and employee experience possible! Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week. Critical Mass is an equal opportunity employer. The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com, omc.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly. *If U.S. based: https://www.consumer.ftc.gov/articles/job-scams#avoid

If Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.html

If U.K. based: https://www.gov.uk/consumer-protection-rights

If Costa Rica based: https://www.consumo.go.cr/educacion\_consumidor/consejos\_practicos.aspx*