Vacancy Status: This posting is for an existing vacancy.

We are seeking an IT Infrastructure & Security Specialist to join our IT Operations team. This role combines cloud infrastructure management, cybersecurity operations, networking, and L1/L2 technical support.

The ideal candidate has strong experience managing Microsoft 365, Azure, AWS infrastructure, networking, and enterprise systems, while also supporting internal users and maintaining secure, reliable IT operations in a fast-growing organization. The role also plays an important part in maintaining Frontier’s security posture, including security tooling, monitoring, and internal security awareness initiatives.

Key Responsibilities

Infrastructure & Cloud Operations

- Administer and maintain Microsoft 365 services including Entra ID (Azure AD), Exchange Online, SharePoint, endpoint management, and security configurations.

- Support and maintain Azure and AWS cloud infrastructure, including virtual networks, access controls, system monitoring, and connectivity.

- Manage VPN connectivity, networking infrastructure, firewalls, and virtual networks to ensure secure and reliable connectivity across systems and users.

- Maintain and support SFTP servers and secure file transfer processes used for business integrations.

- Assist with maintenance, monitoring, and troubleshooting of SQL databases supporting internal applications and integrations.

- Administer and support VoIP and cloud telephony platforms (such as RingCentral), including user provisioning, call routing, integrations, and troubleshooting.

Cybersecurity

- Administer and monitor Microsoft Defender and other enterprise security platforms used for endpoint, identity, and email protection.

- Investigate security alerts, assist with incident response, and support vulnerability remediation and access management practices including MFA enforcement.

- Help maintain Frontier’s overall security posture through monitoring, policy enforcement, and collaboration with leadership on security initiatives.

- Lead internal security awareness initiatives, including employee security training programs and simulated phishing campaigns.

- Coordinate with external security vendors to conduct periodic penetration testing and vulnerability assessments, including managing testing scope, scheduling, remediation tracking, and follow-up verification.

IT Support & Business Systems

- Provide L1–L2 technical support for employees across the organization,



troubleshooting issues related to Microsoft 365, ERP, networking, and SaaS platforms.

- Manage user provisioning, permissions, device setup, and access controls across enterprise systems.

- Collaborate with internal teams to resolve system issues, improve reliability, and document processes and solutions.

Required Qualifications

- 5–7+ years of experience in IT infrastructure, systems administration, or similar roles.

- Hands-on experience administering Microsoft 365 environments, including identity and security management.

- Experience managing Azure and AWS cloud infrastructure.

- Strong knowledge of networking, VPNs, firewalls, and virtual networks.

- Experience supporting IT Helpdesk / L1-L2 support in a business setting.

- Experience maintaining SFTP servers and secure file transfer processes.

- Experience with SQL database maintenance, backups, and troubleshooting.

- Experience supporting ERP systems (preferably Acumatica) and other SaaS business applications.

- Experience administering Microsoft Defender or comparable enterprise security platforms.

Nice to Have

- Experience with PowerShell or scripting for automation

- Experience working in e-commerce environments

- Experience supporting or maintaining infrastructure for chatbots, AI tools, or conversational platforms

- Experience supporting or maintaining data warehouse infrastructure and data pipelines

Why join us? (Brace yourself…)

- We offer competitive compensation

- Extended Health and Dental Benefits Plan (100% Employer-paid Premiums on eligible benefits)

- Continuous Learning Assistance Program reimbursing up to $1,500 per calendar year

- Group RRSP (Non-match)

- 15 Vacation Days to start and scale to 20 Vacation Days.

- Paid Religious Holidays and Volunteer Days

- Flexibility to help you balance work and life

- Corporate GoodLife Fitness Membership Discount

- Supportive leadership team and Culture Committee that works to maintain a positive culture

What are we at the frontier of?

Providing quality and top brand dental supplies to dental practices all across North America.



Our customers trust our deep knowledge of the dental trade and our ability to provide the right products at competitive prices, all through simple and efficient channels. We currently sell and distribute more than 30,000 unique products to 3,000 dental offices in Canada and the U.S. We’re on the cusp of something big.

With roots in the dental wholesale and distribution industry Frontier Dental Supply, Inc., was formed in 2016. We are headquartered in the Greater Toronto Area (GTA).

We are proud to have been certified and awarded the following:

· Great Place to Work for four consecutive years.

· The Best Workplaces in 2021.

· Finalist for Fastest Growing Company 2021 and Startup Business of the Year 2021 by CanadianSME.

· Excellence in Customer Service 2023.

Learn more about what it’s like to work at Frontier Dental Supply Inc. from our very own employees on our Glassdoor page.

We’re rooting for you! We thank all candidates for taking the time to apply. However, only those candidates selected to move forward in our recruitment process will be contacted.

Here at Frontier Dental, we are a diverse team that nurtures an inclusive environment. We attribute our growth significantly to our ability to learn from one another’s perspectives.

Frontier

Dental values the unique skills and experiences of each of our candidates; recognizing that each prospective team member contributes to our efforts in building a diverse and inclusive place to work. We are committed to being an equal opportunity employer and are happy to provide accommodations upon request at all stages of the recruitment process. Should you require any disability-related accommodation to support your participation in our recruitment process, please notify us and we will work with you to meet your accessibility needs.

The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties, and skills required of employees so classified. All employees may be required to perform duties outside of their normal responsibilities from time to time, as needed.

Frontier Dental uses artificial intelligence and automated screening tools to assist in reviewing applications. These tools support our recruitment process but do not replace human decision-making. Questions regarding our recruitment process may be directed to [email protected]

📌 IT Infrastructure & Security Specialist (Markham)
🏢 Frontier Dental Supply
📍 Markham