Senior Administrative Assistant (part time), Ahuntsic North

We’re looking for an adaptable administrative assistant with startup experience to support our CEO and leadership team while ensuring smooth office operations in a flexible work environment. This is a part‑time role, requiring 22.5 hours per week, primarily during morning hours, with flexibility in scheduling based on business needs.

If you thrive in fast‑paced, ever‑changing environments and are proactive in anticipating needs before they arise, we want to hear from you. This role is pivotal to enable our CEO and leadership team to focus on strategic priorities by ensuring they are supported, organized, and always one step ahead. You’ll alsoplay a key role in creating a professional and welcoming office environment that fosters productivity and growth.

What You’ll Do Administrative Support

Liaise between the CEO and internal/external stakeholders filtering, prioritizing, and managing communications with discretion

Own the CEO’s calendar and inbox: scheduling across time zones, anticipating conflicts, and ensuring follow‑through

Prepare, manage, and maintain all correspondence, reports, and presentations for the CEO, ensuring accuracy, clarity, and alignment with the organization's goals for both internal and external stakeholders

Organize and coordinate Board‑related activities, including scheduling meetings, drafting agendas, preparing and distributing presentation materials, and capturing comprehensive and precise meeting minutes

Plan and coordinate all aspects of domestic and international travel with adaptability for last‑minute changes

Track and reconcile expenses for the CEO and leadership team promptly and accurately

Provide administrative support to other Senior Leadership team members as needed, demonstrating flexibility, initiative, and commitment to organizational success

Office Operations

Oversee the day‑to‑day operations of our Kanata office creating a friendly, functional environment for employees and guests

Maintain office supplies and manage inventory efficiently

Organize meetings and internal events, handling logistics end‑to‑end

Coordinate facility needs and act as the main contact for vendors and maintenanceSupport health and safety initiatives as part of the Joint Health&Safety Committee

What You Bring

5+ years of experience in senior administrative support and office management, ideally in a startup or high‑growth tech environment

A strong tech skillset, you’re fluent in Microsoft Office, Zoom, Slack, and can quickly master new platforms

Experience managing complex schedules, inboxes, and priorities in a dynamic, fast‑moving setting

A calm, solutions‑oriented mindset with the ability to pivot quickly when plans change

Exceptional communication skills and professional presence; you represent the CEO and Cerio with polish and discretion

Strong organizational and multitasking abilities, managing competing demands

Knowledge of Ontario health&safety regulations, is an asset

A valid driver’s license and access to a vehicle for occasional supply pickups

Must be within commuting distance of Kanata, ON as this is a hybrid role requiring in‑office presence 2 days/week

Total Rewards Compensation for this role is determined by experience, skills, and internal equity considerations. Cerio offers a comprehensive total rewards package for this position including competitive base salary ($42,000 - $48,000/year based on 22.5 hours/week) and incentive bonus program, health benefits package, and generous time off programs. Our People&Culture team welcomes discussions about total rewards during your conversations.

About Cerio Cerio is headquartered in Ottawa, Canada, with offices and projects spanning international markets, and Centers of Excellence in Europe and North America. Cerio, creating new scale economics for the AI and Cloud era, delivers an open systems platform for a more sustainable data center. Learn more at cerio.ai and follow us on X and LinkedIn.

We are an equal opportunity employer and welcome applications from all qualified candidates. Our hiring decisions are based solely on merit, skills, and potential, without regard to race, national or ethnic origin, colour, religion, sex, sexual orientation, gender identity or expression, age, record of offenses, marital status, family status, genetic characteristics or disability.

In addition, Cerio is committed to providing accommodations for people with disabilities. Please let us know if you require a reasonable accommodation due to a disability during any aspect of your candidate experience so we can better support you. Our People&Culture team can be reached by emailing .

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