Office Administrator & Company Security Officer

Role Summary

The Office Administrator & Company Security Officer plays a key role in supporting Modern Niagara's security, compliance, and administrative operations. Acting as the designated Company Security Officer (CSO) under the federal Contract Security Program (CSP), this role oversees personnel security clearances, compliance requirements, and coordination with government security authorities while supporting Alternate Company Security Officers (ACSOs). In addition, the role provides administrative support to leadership, coordinates office initiatives, and supports corporate events and employee engagement activities. Success in this position requires strong organization, attention to detail, discretion, and the ability to balance multiple priorities in a fast-paced environment.

Why This Role Matters to Modern Niagara

This role plays a critical part in maintaining Modern Niagara's compliance with government security requirements and supporting successful project delivery. By proactively managing security clearance processes, supporting project teams, and providing guidance to Alternate Company Security Officers, this position helps mitigate risk and ensures uninterrupted access to secure project opportunities. Beyond security compliance, the role also supports leadership and employee engagement initiatives that contribute to a positive workplace experience and efficient office operations.

Key Impact / Purpose

• Ensure compliance with Contract Security Program requirements and maintain Modern Niagara's security clearance obligations.


• Support project teams, field operations, and ACSOs by providing guidance on security clearance and compliance requirements.


• Deliver high-quality administrative, coordination, and office support services that contribute to organizational effectiveness and required clearances.

Duties and Responsibilities

Security & Compliance

• Serve as Modern Niagara's designated Company Security Officer (CSO) under the Contract Security Program (CSP).


• Maintain accountability for the organization's Facility Security Clearance (FSC).


• Coordinate personnel security clearances, renewals, transfers, and upgrades.


• Ensure Security Requirements Check Lists (SRCLs) and supporting documentation are completed and maintained.


• Liaise with Public Services and Procurement Canada's Contract Security Program and other government security authorities.


• Work closely with project teams, field staff, subcontractors, and union partners to support security clearance requirements.


• Monitor compliance with security clearance obligations and contract security requirements.


• Directly support and provide guidance to Alternate Company Security Officers (ACSOs) across multiple offices.


• Act as a resource for security-related inquiries and compliance requirements.


• Maintain security records, reports, and documentation in accordance with company and government requirements.

Administrative & Corporate Support

• Create internal communications, presentations, reports, and office notices.


• Assist with office operations, vendor coordination, and workplace initiatives.


• Maintain confidential files, records, and documentation.

Corporate Events & Employee Engagement

• Support the planning and execution of company-wide events including town halls, holiday celebrations, employee appreciation initiatives, and major sponsored events.


• Support and coordinate vendors, logistics, communications, registrations, and event materials.


• Assist leadership in delivering initiatives that support employee engagement and company culture.

Must Haves

• Active Government of Canada Secret Security Clearance.


• Experience supporting security, compliance, administration, operations, or coordination functions.


• Exceptional organizational and time management skills.


• Strong written and verbal communication skills.


• Ability to handle confidential and sensitive information with discretion.


• Advanced proficiency with Microsoft Office Suite, including Outlook, Word, Excel, and PowerPoint.


• Ability to work independently while managing multiple competing priorities.


• Strong stakeholder management and relationship-building skills.

Nice to Haves

• Experience working as a Company Security Officer (CSO) or Alternate Company Security Officer (ACSO).


• Experience with the Contract Security Program (CSP).


• Experience working in construction, engineering, infrastructure, or government contracting environments.


• Experience supporting corporate events or employee engagement initiatives.

This is a new position. Expected annual compensation; $68,000 - $80,000.

Modern Niagara offers a competitive total compensation package including: 

• Performance based bonus opportunities


• Defined Contribution Pension Plan with a generous employer contribution 


• Flexible Health and Dental benefits with tiered options to meet the needs of you and your family 


• An annual health spending account to support your overall wellness 


• 24/7 confidential support through our Employee and Family Assistance Program with access to comprehensive resources and professional services 


• A competitive vacation package with additional vacation granted throughout your tenure with the organization. 


• Employer Paid Parental Leave Top Up 


• Annual Community Day dedicated to volunteering and giving back to the communities where we live and work 


• Corporate Discounts through various vendors across Canada for programs such as fitness, mobile phones, travel, home and auto insurance and many others 

Here at Modern Niagara, because we know our people are the best in the industry, we pride ourselves on providing a total compensation package that rewards employees for their hard work and supports employees and their families in their overall wellbeing.  

About Modern Niagara

Who We Are

Modern Niagara helps building owners, managers, and general contractors meet the mechanical, electrical, integrated building technology, and building services needs of their buildings across Vancouver, Calgary, Edmonton, Toronto, Southwestern Ontario, and Ottawa. We are committed to having a positive and meaningful impact on Canada’s infrastructure — and on the communities where we live, learn, work, and heal. We build for life.

Our Culture & Values

We value passion, initiative, determination, professionalism, and teamwork. Health and safety are embedded in everything we do, and our award-winning safety culture consistently performs well above industry standards.

Diversity, Equity & Inclusion at Modern Niagara

We are committed to building a diverse, equitable, and inclusive organization where everyone has access to opportunity, feels a sense of belonging, and can thrive. We actively work to remove barriers faced by members of equity-seeking groups (including women, Indigenous, Black, racialized, 2SLGBTQIA+ people, people with disabilities, and newcomers to Canada) in the construction industry. We encourage applications from candidates of all backgrounds and lived experiences and are committed to a barrier-free hiring process.

If you require accommodation at any stage of the recruitment process, please contact us at View email address on jobs.jobcopilot.com so we can make appropriate arrangements.

We appreciate every applicant’s interest in joining Modern Niagara. Only those selected for an interview will be contacted.