Job Description
About Mjolnir Security
Mjolnir Security is a Canadian MSSP and Digital Forensics & Incident Response firm serving enterprise clients across financial services, automotive retail, education, and other regulated sectors. We deliver managed security operations, incident response, and infrastructure services on Canadian-sovereign infrastructure. Our team is small, technically deep, and works real enterprise environments — not demos.
The Role
We're looking for an Infrastructure Support Engineer who combines solid sysadmin fundamentals with enough networking and security awareness to operate effectively in a security-focused environment. You'll support both internal infrastructure and client-facing engagements — provisioning and maintaining servers, configuring network infrastructure, managing identity and access environments, and lending hands-on technical support to SOC and DFIR operations when needed.
This is a generalist role with a security bent. You won't be a pure helpdesk and you won't be a pure security analyst — you'll be the person who keeps the infrastructure running, understands what's on the wire, and knows enough about how attacks work to support the people investigating them.
What You'll Do
Server & Systems Administration
Provision, configure, and maintain Windows Server and Linux (Ubuntu/Debian/RHEL) environments across physical, virtual, and cloud-hosted infrastructure
Manage Active Directory and domain controller environments: user/group/OU management, Group Policy, DNS, DHCP, and domain trust configurations
Maintain server health: patching cycles, performance monitoring, backup verification, and capacity planning
Build and maintain VM templates, deployment images, and standardized server configurations
Support Microsoft 365 and Azure administration tasks including user lifecycle management, licence assignment, and basic Entra ID/Intune operations
Networking & Infrastructure
Configure and maintain managed switches, VLANs, and inter-VLAN routing in enterprise environments
Set up and manage SPAN/mirror ports for traffic capture and network monitoring — understanding why this matters in a security context, not just how to click through it
Configure and support firewalls and perimeter security appliances: rule management, NAT, VPN tunnels, and access policies
Troubleshoot layer 2/3 connectivity issues across wired and wireless environments
Support secure remote access infrastructure and endpoint connectivity solutions
SOC & DFIR Support
Assist SOC analysts with infrastructure-layer visibility: log source onboarding, agent deployment, network tap configuration, and sensor management
Support DFIR engagements with evidence acquisition infrastructure: ensuring forensic workstations, write blockers, and acquisition environments are ready and documented
Assist with endpoint agent deployment and management across client environments (EDR, logging, monitoring)
Help configure and validate logging pipelines — ensuring the right events are captured, forwarded, and retained
Maintain lab and investigation environments used for malware analysis and forensic examination
Client Infrastructure Support
Serve as a technical resource on client-facing infrastructure engagements: server builds, network assessments, Active Directory reviews, and hardening projects
Document client environment configurations accurately for use in security assessments and ongoing managed service delivery
Support onboarding of new managed service clients: asset discovery, baseline configuration review, and monitoring integration
Respond to client infrastructure issues escalated through the SOC or service desk
Documentation & Standards
Maintain accurate and up-to-date runbooks, network diagrams, configuration records, and change logs
Follow and contribute to internal build standards, hardening baselines, and configuration templates
Document troubleshooting steps, resolution notes, and lessons learned in a manner that's useful to the next person
What You Bring
6+ years of hands-on sysadmin or infrastructure support experience in a professional environment
Solid Windows Server administration: Active Directory, Group Policy, DNS/DHCP, domain controllers, and Windows event logging
Comfortable Linux administration: CLI proficiency, service management, user/permission management, networking, and system hardening
Working knowledge of managed switches and VLANs — you've configured SPAN/mirror ports before and understand what they're used for
Experience configuring firewalls and understanding perimeter security concepts: rule sets, NAT, site-to-site VPN, and access control
Familiarity with virtualization environments and VM management
Microsoft 365 and basic Azure administration experience: user management, licensing, Entra ID (formerly Azure AD), and Intune
Strong documentation habits — you leave environments better documented than you found them
Calm under pressure: when something breaks at a client site or during an active incident, you focus on the problem
Assets That Will Set You Apart
Experience in an MSP or MSSP environment where you managed multiple clients simultaneously
Exposure to security tooling: SIEM log source configuration, EDR deployment, or network monitoring platforms
Familiarity with network traffic analysis — understanding what normal looks like and what doesn't
Scripting ability in PowerShell or Bash for automation of routine admin tasks
Relevant certifications: CompTIA Network+, Security+, Microsoft certifications (AZ-104, MD-102), or equivalent
Basic understanding of DFIR concepts — chain of custody, evidence handling, forensic acquisition workflows
Why Join Us
Work across real enterprise client environments — Windows, Linux, hybrid cloud, on-premise networking — not a single-tenant internal IT role
Exposure to security operations and DFIR workflows that most sysadmins never see from the inside
Direct collaboration with DFIR specialists and SOC analysts — you'll develop a security mindset that makes you a significantly more valuable infrastructure professional
Clear growth path toward a specialized Security Engineer or Detection Engineer role for those who want it
Location requirement: This is a strictly on-site role. Candidates must reside in the Greater Toronto Area and report to our Toronto office five days per week. There is no remote or hybrid option for this position, now or in the future. Relocation assistance and travel reimbursement are not available.
Mjolnir Security is a Canadian MSSP and Digital Forensics & Incident Response firm serving enterprise clients across financial services, automotive retail, education, and other regulated sectors. We deliver managed security operations, incident response, and infrastructure services on Canadian-sovereign infrastructure. Our team is small, technically deep, and works real enterprise environments — not demos.
The Role
We're looking for an Infrastructure Support Engineer who combines solid sysadmin fundamentals with enough networking and security awareness to operate effectively in a security-focused environment. You'll support both internal infrastructure and client-facing engagements — provisioning and maintaining servers, configuring network infrastructure, managing identity and access environments, and lending hands-on technical support to SOC and DFIR operations when needed.
This is a generalist role with a security bent. You won't be a pure helpdesk and you won't be a pure security analyst — you'll be the person who keeps the infrastructure running, understands what's on the wire, and knows enough about how attacks work to support the people investigating them.
What You'll Do
Server & Systems Administration
Provision, configure, and maintain Windows Server and Linux (Ubuntu/Debian/RHEL) environments across physical, virtual, and cloud-hosted infrastructure
Manage Active Directory and domain controller environments: user/group/OU management, Group Policy, DNS, DHCP, and domain trust configurations
Maintain server health: patching cycles, performance monitoring, backup verification, and capacity planning
Build and maintain VM templates, deployment images, and standardized server configurations
Support Microsoft 365 and Azure administration tasks including user lifecycle management, licence assignment, and basic Entra ID/Intune operations
Networking & Infrastructure
Configure and maintain managed switches, VLANs, and inter-VLAN routing in enterprise environments
Set up and manage SPAN/mirror ports for traffic capture and network monitoring — understanding why this matters in a security context, not just how to click through it
Configure and support firewalls and perimeter security appliances: rule management, NAT, VPN tunnels, and access policies
Troubleshoot layer 2/3 connectivity issues across wired and wireless environments
Support secure remote access infrastructure and endpoint connectivity solutions
SOC & DFIR Support
Assist SOC analysts with infrastructure-layer visibility: log source onboarding, agent deployment, network tap configuration, and sensor management
Support DFIR engagements with evidence acquisition infrastructure: ensuring forensic workstations, write blockers, and acquisition environments are ready and documented
Assist with endpoint agent deployment and management across client environments (EDR, logging, monitoring)
Help configure and validate logging pipelines — ensuring the right events are captured, forwarded, and retained
Maintain lab and investigation environments used for malware analysis and forensic examination
Client Infrastructure Support
Serve as a technical resource on client-facing infrastructure engagements: server builds, network assessments, Active Directory reviews, and hardening projects
Document client environment configurations accurately for use in security assessments and ongoing managed service delivery
Support onboarding of new managed service clients: asset discovery, baseline configuration review, and monitoring integration
Respond to client infrastructure issues escalated through the SOC or service desk
Documentation & Standards
Maintain accurate and up-to-date runbooks, network diagrams, configuration records, and change logs
Follow and contribute to internal build standards, hardening baselines, and configuration templates
Document troubleshooting steps, resolution notes, and lessons learned in a manner that's useful to the next person
What You Bring
6+ years of hands-on sysadmin or infrastructure support experience in a professional environment
Solid Windows Server administration: Active Directory, Group Policy, DNS/DHCP, domain controllers, and Windows event logging
Comfortable Linux administration: CLI proficiency, service management, user/permission management, networking, and system hardening
Working knowledge of managed switches and VLANs — you've configured SPAN/mirror ports before and understand what they're used for
Experience configuring firewalls and understanding perimeter security concepts: rule sets, NAT, site-to-site VPN, and access control
Familiarity with virtualization environments and VM management
Microsoft 365 and basic Azure administration experience: user management, licensing, Entra ID (formerly Azure AD), and Intune
Strong documentation habits — you leave environments better documented than you found them
Calm under pressure: when something breaks at a client site or during an active incident, you focus on the problem
Assets That Will Set You Apart
Experience in an MSP or MSSP environment where you managed multiple clients simultaneously
Exposure to security tooling: SIEM log source configuration, EDR deployment, or network monitoring platforms
Familiarity with network traffic analysis — understanding what normal looks like and what doesn't
Scripting ability in PowerShell or Bash for automation of routine admin tasks
Relevant certifications: CompTIA Network+, Security+, Microsoft certifications (AZ-104, MD-102), or equivalent
Basic understanding of DFIR concepts — chain of custody, evidence handling, forensic acquisition workflows
Why Join Us
Work across real enterprise client environments — Windows, Linux, hybrid cloud, on-premise networking — not a single-tenant internal IT role
Exposure to security operations and DFIR workflows that most sysadmins never see from the inside
Direct collaboration with DFIR specialists and SOC analysts — you'll develop a security mindset that makes you a significantly more valuable infrastructure professional
Clear growth path toward a specialized Security Engineer or Detection Engineer role for those who want it
Location requirement: This is a strictly on-site role. Candidates must reside in the Greater Toronto Area and report to our Toronto office five days per week. There is no remote or hybrid option for this position, now or in the future. Relocation assistance and travel reimbursement are not available.
💡 Quick Summary
Seeking a career-building opportunity? The Infrastructure Support Engineer position is now open for candidates interested in the Remote Jobs sector. This role in Toronto offers a professional environment and growth potential.
Requirement Snapshot: Candidates should possess basic communication skills, a proactive attitude, and the ability to work in a team. Experience in Remote Jobs is a plus.
