Description

Role:

Office Administrative Assistant

Location:

Mississauga, Ontario

Company:

Stelumar Advanced Manufacturing Inc.

Department:

Administration

Employment Type:

Full-Time, Permanent

Reports to:

Director, People & Culture

Stelumar Advanced Manufacturing Inc. (SAMI or Stelumar) is a technology-driven company dedicated to revolutionizing homebuilding in Canada through advanced modular building solutions. Founded by Canadian entrepreneur Peter Gilgan, founder of Mattamy Homes, Stelumar combines automation, robotics, and AI to modernize construction and help address the housing shortage. With state-of-the-art manufacturing facilities in the Greater Toronto Area, Stelumar is focused on accelerating construction timelines, improving consistency and making housing more attainable. Stelumar produces precision-built walls, floors, and roofing systems, factory-built modular units, and interior cabinetry and millwork at industrial scale. Its development and construction arm, Stelumar Communities, delivers scalable modular housing from planning and design to construction and handover. The team supports low- and mid-rise residential, purpose-built rental, affordable and workforce housing, student housing, hospitality, healthcare-related housing, and institutional developments. Together, Stelumar is delivering housing people are proud of.

For more information, visit Stelumar.com .

What we offer

As the Office Administrative Assistant, you will be the welcoming first point of contact for visitors, employees, and callers, while keeping our office running smoothly day to day. This role blends reception coverage, administrative support,



and office management responsibilities, including, but not limited to managing supplies and vendors, coordinating meetings, and supporting teams across the business and multiple office locations . The ideal candidate is highly professional and takes pride in creating a well-run, welcoming workplace.

What you’ll do

- Greet and welcome visitors, clients, and employees, ensuring a professional and friendly front-of-house experience.
- Answer, screen, and direct incoming calls through the main switchboard in a timely and courteous manner.
- Manage the reception area, including sign-in procedures, visitor badges, and meeting room readiness.
- Sort, distribute, and process incoming and outgoing mail, packages, and courier shipments.
- Order and maintain office supplies, kitchen/pantry stock, and equipment, tracking inventory and managing vendor relationships.
- Coordinate maintenance and service requests with building management and external vendors (cleaning, IT, repairs, etc.).
- Schedule and coordinate meetings, boardroom bookings, and calendar requests across departments.
- Support the planning and execution of internal events, team meetings, and company gatherings , including participation in Stelumar’s culture committee.




- Assist with onboarding logistics for new hires, including workspace setup, access cards, and welcome materials.
- Prepare, format, and proofread correspondence, memos, presentations, and reports as needed.
- Process invoices, expense reports, and purchase orders in line with company procedures.
- Maintain organized filing systems, both physical and digital, ensuring accurate recordkeeping.
- Support travel bookings and itineraries for staff and visiting leadership.
- Monitor office health and safety standards, ensuring compliance with workplace policies.
- Provide administrative support to leadership and cross-functional teams as required.
- Identify opportunities to improve office processes and the overall workplace experience.
- Other duties as required.

What you bring

- 2+ years of experience in a reception , administrative, or office coordination role.
- Experience managing office supplies, vendors, and day-to-day office operations
- Proficiency in Microsoft Office (Outlook, Word, Excel, PowerPoint) and comfort learning new systems.
- Solid communication, organizational, and multitasking skills.
- Professional, personable demeanor with a customer-service mindset.

Bonus Points

- High school diploma required; post-secondary diploma or certificate in Office Administration, Business, or a related field. Experience supporting a manufacturing , industrial, or construction-related business .
- Experience coordinating events, meetings, or office moves.
- Familiarity with expense management or basic bookkeeping software.
- Experience supporting onboa

📌 Office Administrative Assistant (Canada)
🏢 Stelumar Advanced Manufacturing
📍 Canada