Infrastructure Architect

123Dentist; Toronto; Hybrid; CAD 120,000 - 150,000; Full time

Benefits offered by this job

Hybrid work arrangement

Autonomy and mentorship

Cutting-edge tech stack

Professional development

Job summary

123Dentist is seeking an Infrastructure Architect to own the design and delivery of our server, identity, cloud, and network infrastructure across multi-site operations. You’ll balance hands-on engineering with escalation support and project delivery in a Microsoft-centric environment.

You will mentor engineers, drive infrastructure transformations, and enable secure, reliable clinic IT. This role reports to the Senior Infrastructure Engineering Manager and sits in Toronto with a flexible remote

Qualifications

• Bachelor's degree or equivalent hands-on IT experience.
• 7–8+ years in infrastructure engineering, especially Microsoft-centric environments.
• Led multi-team infrastructure transformation projects (cloud, identity, network).
• Experience in multi-site environments and M&A/site integration is a strong asset.
• Expert-level Windows Server, Entra ID, Azure, Intune proficiency; security focus.

Responsibilities

• Serve as Tier 2/3 escalation point for complex infrastructure issues and drive root-cause resolution.
• Diagnose and resolve issues across Windows Server, Active Directory, Entra ID, Intune, Azure, and network layers.
• Lead major-incident response and communicate status clearly to leadership.
• Mentor Tier 1/2 analysts and produce runbooks to improve troubleshooting.
• Design and deliver infrastructure transformations across on-prem and cloud environments.
• Engineer Azure infrastructure including landing zones, VMs, networking, and cost optimization.
• Lead hybrid identity initiatives spanning AD and Entra ID with MFA and RBAC.
• Standardize endpoint management via Intune and automate with PowerShell.

Skills

Tier 2/3 escalation

Windows Server

Active Directory

Azure

Intune

PowerShell

Networking

Hybrid identity

Education

Bachelor's degree in IT or related

Tools

Azure

Intune

PowerShell

Active Directory

Conditional Access

Job description

Team: Technology Services (Information Technology)

Reports To: Senior Infrastructure Engineering Manager

Location: Toronto, Ontario. (4 days in office, 1 day remote)

Employment Type: Permanent Full-Time

About 123Dentist

123Dentist is the largest majority Canadian-owned dental support organization, supporting a growing network of 400+ dental practices across the country. As we continue to expand, both organically and through acquisition, our IT team plays a central role in standardizing, securing, and scaling the technology that our clinics and corporate teams rely on every day.

Job Title: Infrastructure Architect

About The Role

The Infrastructure Architect is the senior technical engineer for 123Dentist’s server, identity, cloud, and network infrastructure, combining deep hands-on design and engineering with escalation support and project delivery across a Microsoft-centric, multi-site environment.

The role is balanced across three areas: infrastructure transformation and project delivery (cloud migrations, identity modernization, endpoint-management standardization), Tier 2/3 escalation support for the most complex infrastructure, identity, cloud, and network issues, and mergers & acquisitions / practice integration, onboarding newly acquired practices into the 123Dentist environment. Operating with significant independence, you’ll act as a trusted technical authority, mentoring infrastructure engineers, service desk analysts, and operations team members while championing sound engineering standards, security, and reliability.

What You’ll Do

• Serve as the Tier 2/3 escalation point for complex infrastructure, identity, cloud, and network incidents, driving them through to root-cause resolution
• Diagnose and resolve advanced issues across Windows Server, Active Directory, Entra ID, Microsoft Intune, Microsoft 365, Azure, and the LAN/WAN and firewall layers
• Lead major-incident response for infrastructure-impacting outages, coordinating with IT and business stakeholders and communicating status clearly to leadership
• Mentor and coach Tier 1 and Tier 2 analysts, producing runbooks and technical documentation that build the team’s troubleshooting capability
• Independently design, plan, and deliver infrastructure transformation initiatives across on-premises and cloud, including server consolidation, migrations, identity modernization, endpoint-management standardization, and network refreshes
• Engineer and administer Microsoft Azure infrastructure, including landing zone design, virtual machines, networking, storage, backup, and cost optimization
• Lead hybrid identity initiatives spanning on-premises Active Directory and Entra ID, including conditional access, MFA, and RBAC
• Modernize and standardize endpoint management through Microsoft Intune, and automate provisioning and configuration using PowerShell and infrastructure-as-code
• Lead the technical engineering workstream to integrate newly acquired practices into the 123Dentist environment, including identity, endpoints, network, and core systems
• Partner with IT leadership and the Corporate Development / M&A team on due-diligence and integration planning, standardizing and securing clinic infrastructure as new sites join the network

What You Bring

• Bachelor’s degree in Information Technology, Computer Science, or a related field, or equivalent hands‑on experience
• 7–8+ years in systems/infrastructure engineering or senior systems administration, including hands‑on Tier 2/3 escalation in a Microsoft-centric enterprise environment
• Demonstrated experience independently leading infrastructure transformation projects spanning multiple teams or departments (cloud adoption/migrations, identity or endpoint modernization, network refreshes)
• Experience supporting a multi‑site, distributed environment (healthcare, DSO, retail, or similar) is an asset; experience with M&A / site integration is a strong asset
• Expert-level Windows Server administration and deep hybrid identity expertise (on‑premises Active Directory and Entra ID, conditional access, MFA, RBAC)
• Strong Microsoft Azure engineering skills, including IaaS, virtual networking, storage, backup, security, and cost management
• Experience with Microsoft Intune / modern endpoint management and LAN/WAN and network engineering (routing, VLANs, VPN, DNS/DHCP, firewalls)
• PowerShell scripting and automation experience, with working familiarity in endpoint security, backup/DR, and ITSM tooling
• Microsoft certifications (e.g., AZ‑104/AZ‑305, MD‑102, SC‑300) or equivalent networking/security certifications (CCNA, Security+, ITIL) are an asset
• Strong sense of ownership, excellent analytical and problem‑solving abilities, and a collaborative approach to mentoring across teams

Why Join 123Dentist?

• Play a central, high‑visibility role in modernizing IT infrastructure for a fast‑growing national organization
• Operate with real autonomy as a trusted senior technical authority
• Work across a modern, cutting‑edge cloud, identity, and endpoint technology stack
• Be part of a collaborative team that values mentorship and engineering excellence