Administer and secure enterprise IT and OT environments across sites, supporting Windows Server, virtualization, networking, cloud (Azure/M365), PLC/SCADA integrations, backups, DR, segmentation and Zero Trust initiatives. Provide Tier 2/3 escalation, network/OT troubleshooting, monitoring, documentation, compliance support, and collaborate with infrastructure, security, and manufacturing teams to maintain production uptime.
SUMMARY
ESSENTIAL DUTIES AND RESPONSIBILITIES:
IT Systems Administration (Enterprise)
The IT Systems Administrator is responsible for the administration, maintenance, and security of both IT (enterprise systems) and OT (manufacturing/industrial systems) environments across all locations.
This role bridges enterprise IT and operational technology, ensuring reliable, secure, and scalable integration between servers, networks, cloud platforms, and manufacturing systems (PLCs, SCADA, HMIs).
The position is critical in supporting business operations, production uptime, cybersecurity initiatives (including Zero Trust), and IT convergence strategies.
ESSENTIAL DUTIES AND RESPONSIBILITIES:
IT Systems Administration (Enterprise)
- Administer and maintain:
- Windows Server environments, Active Directory, DNS, DHCP
- Virtual environments (VMware / Hyper-V)
- Cloud services (Azure / M365)
- Manage system performance, availability, and patching
- Support identity and access management (IAM) and Group Policy
- Provide Tier 2/3 escalation support for infrastructure issues
- Support LAN, WAN, VPN, wireless, and cloud network connectivity
- Assist with configuration and troubleshooting of network devices (switches, firewalls, APs)
- Monitor infrastructure performance and availability
- Collaborate with network engineering on upgrades and optimization
- Support and maintain systems connected to:
- PLCs, SCADA, and HMI environments
- Industrial control systems (ICS) within manufacturing sites
- Ensure reliable system and network communication for production equipment
- Assist in troubleshooting production-impacting system issues
- Coordinate with manufacturing, automation, and controls teams
IT Integration & Security
- Support secure integration between IT and OT environments
- Implement system-level and network-level segmentation controls
- Contribute to Zero Trust Architecture initiatives
- Ensure secure authentication, access controls, and system hardening across environments
- Manage backup solutions for servers, systems, and critical OT data
- Develop and maintain disaster recovery procedures
- Participate in DR testing and incident recovery
- Monitor system and infrastructure performance across IT and OT environments
- Identify bottlenecks, risks, and availability issues
- Implement performance tuning and system improvements
- Apply patches, updates, and security baselines to systems
- Support vulnerability remediation and audit requirements
- Ensure compliance with corporate policies and regulatory standards
- Maintain documentation for:
- Systems configurations
- Network diagrams and dependencies
- OT system integrations and workflows
- Follow ITIL processes (change, incident, problem management)
- Work closely with:
- IT Infrastructure and Security teams
- Manufacturing / Production teams
- Automation and Controls Engineers
- Provide guidance on system and infrastructure requirements for projects
- Support Helpdesk escalation tickets
- Identify automation opportunities and improve operational efficiency
- Mentor junior staff and promote best practices
Education
- Bachelor’s degree in Computer Science, Information Systems, or equivalent experience
- Microsoft (Azure / Windows Server) certifications
- CCNA or equivalent networking certification
- Security+ or equivalent
- OT / ICS certifications (a plus)
Professional Experience
- 7+ years of experience in:
- Systems Administration
- Infrastructure / Network Support
- OT / Manufacturing environment experience preferred
- Experience supporting multi-site or global operations is a plus
Systems & Infrastructure
- Windows Server, Active Directory, Group Policy
- Virtualization (VMware / Hyper-V)
- Microsoft 365 / Azure
- Backup and recovery platforms
- TCP/IP, DNS, DHCP, VLANs
- Firewall and VPN technologies
- Wireless and enterprise networking
- Experience with:
- PLC-connected systems
- SCADA / HMI platforms
- Industrial protocols (Aveva, Modbus, OPC, Ethernet/IP)
- Understanding of IT segmentation and secure ICS environments
- Strong troubleshooting and analytical skills
- Ability to operate across IT and manufacturing environments
- Effective communication across technical and business teams
- Strong documentation and process discipline
- High sense of urgency, especially for production-impacting issues
Similar Jobs
Blockchain • eCommerce • Fintech • Payments • Software • Financial Services • Cryptocurrency
Lead end-to-end delivery of high-priority revenue programs, coordinating Product, Sales, Marketing, Finance, Legal, Risk, and Operations. Drive launch readiness for products and partnerships, establish governance and operating cadences, create repeatable launch frameworks and executive communications, and continuously improve cross-functional execution.
Blockchain • eCommerce • Fintech • Payments • Software • Financial Services • Cryptocurrency
Design, build, and operate services powering card issuance, transaction authorization, wallet provisioning, 3-D Secure, and disputes. Own features end-to-end within a microservice, event-driven architecture, write well-tested code, participate in reviews, and perform operational ownership including on-call and incident response. Leverage AI developer tools to improve velocity and quality.
Top Skills:
AuroraAWSBuildkiteClaudeDatadogDynamoDBEvent-Driven ArchitectureGooseGradleGrpcHibernateHTTPJavaJSONKafkaKotlinMcpMicroservicesMySQLProtocol BuffersRedis
Big Data • Fintech • Mobile • Payments • Financial Services
Design, build, and operate CIAM backend services for registration, authentication, authorization, and account lifecycle. Implement OAuth/OIDC/SAML/SCIM, develop APIs in Python/Kotlin, integrate identity platforms, automate deployments with IaC and CI/CD, and ensure secure, reliable, high-scale identity operations.
Top Skills:
Auth0AWSAzure Ad B2CBuildkiteCi/CdCursorForgerockGitInfrastructure As CodeKotlinKubernetesMySQLOauth 2.0OidcOktaPing IdentityPythonSAMLScimSparkTerraform
What you need to know about the Montreal Tech Scene
With roots dating back to 1642, Montreal is often recognized for its French-inspired architecture and cobblestone streets lined with traditional shops and cafés. But what truly sets the city apart is how it blends its rich tradition with a modern edge, reflected in its evolving skyline and fast-growing tech industry. According to economic promotion agency Montréal International, the city ranks among the top in North America to invest in artificial intelligence, making it le spot idéal for job seekers who want the best of both worlds.
Key Facts About Montreal Tech
- Number of Tech Workers: 255,000+ (2024, Tourisme Montréal)
- Major Tech Employers: SAP, Google, Microsoft, Cisco
- Key Industries: Artificial intelligence, machine learning, cybersecurity, cloud computing, web development
- Funding Landscape: $1.47 billion in venture capital funding in 2024 (BetaKit)
- Notable Investors: CIBC Innovation Banking, BDC Capital, Investissement Québec, Fonds de solidarité FTQ
- Research Centers and Universities: McGill University, Université de Montréal, Concordia University, Mila Quebec, ÉTS Montréal
