IT Infrastructure Engineer

The IT Infrastructure Engineer will support and maintain critical network security and communication systems across a major tunnel construction project. This fully onsite role involves managing Fortinet and Ubiquiti network equipment maintaining CCTV and access control systems and ensuring reliable LTE/WiFi and UHF communication networks in challenging field environments. 

This position requires frequent travel to multiple active construction sites strong problemsolving skills and clear communication with both technical and construction teams. Candidates must be comfortable working in rugged conditions and be available for oncall support to ensure seamless operational continuity across the project.

Key Responsibilities:

Network Infrastructure Management

• Configure manage and maintain Fortinet firewalls switches and security appliances to ensure a secure and resilient network.
• Oversee Ubiquiti wireless and routing equipment for stable and optimized connectivity across project sites.
• Utilize Meraki knowledge (if applicable) to support or integrate systems when required.
• LTE/WiFi Underground Network: Support monitor and troubleshoot LTE and WiFi radio systems in tunnels and other difficult environments to ensure continuous service.

Site Communications & Security Systems

• Maintain monitor and troubleshoot IP camera systems NVRs and networked video infrastructure.
• Operate and support access control hardware/software to maintain site security and compliance.
• Oversee UHF radio equipment ensuring reliable communication for construction and safety teams.
• Track system performance maintain configuration records and provide reporting as required.

Field Operations & Physical Environment Support

• Work safely and effectively in muddy dusty wet underground and confined environments.
• Perform site visits across multiple locations to install maintain and troubleshoot equipment.
• Carry and manage field tools and technical equipment (backpack up to approx. 10 kg and devices up to 15 kg).
• Support installation and physical deployment of networking equipment in active construction zones.

Support & Operational Continuity

• Provide oncall support for urgent system issues outside standard hours.
• Communicate clearly with construction crews contractors engineering teams and technical staff.
• Work both independently and collaboratively to resolve issues optimize systems and ensure seamless operations.
• Manage multiple priorities adapt to evolving site needs and escalate issues appropriately.

Qualifications :

• Undergraduate Degree or Diploma in Information Technology or a related field. 
• Valid G Class Drivers License.
• Minimum 4 years of industry experience ideally in construction industrial or similar environment; experience working on large-scale infrastructure or construction projects preferred.
• Proven handson experience with Fortinet and Ubiquiti network equipment.
• Networking certifications such as CompTIA Network Cisco CCNA or Fortinet NSE is an asset.
• Familiarity with Meraki networking equipment is an asset.
• Knowledge of CCTV access control LTE/WiFi radio networks and UHF radio systems.
• Ability to work in physically demanding outdoor and challenging site conditions.
• Strong troubleshooting and problemsolving skills.
• Excellent communication and interpersonal abilities.
• Ability to work independently and make informed decisions in the field.
• Willingness to participate in oncall rotation.

Physical Requirements:

• Ability to lift and carry equipment up to 15 kg and a tool-filled backpack weighing approximately 10 kg.
• Comfortable working in wet muddy dusty underground confined or elevated environments.
• Capable of frequent site travel and extended periods of field work.

Additional Information :

What We Offer

• Competitive Salary
• Comprehensive Benefits Package:
  • Disability Insurance
  • Dental Insurance
  • Extended medical insurance
  • (Optional) RRSP matching
  • Discretionary Bonus

Why OTG

Welcome to Ontario Transit Group (OTG) located in the heart of Downtown Toronto where diversity and passion collide. As we work on the groundbreaking Ontario Line project we prioritize fostering a positive culture. Join us and be part of a team that celebrates our employees organizes family events and promotes health and wellness initiatives. Our commitment to personal and professional growth means annual performance reviews salary increases comprehensive health benefits generous RRSP matching industry education support and career development opportunities.

OTG uses artificial intelligence (AI) tools as part of the applicant screening process. However applications are reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

At OTG we embrace diversity recognizing that it strengthens us as a team and as a company. We are an equal-opportunity employer encouraging applications from all interested candidates. We value Indigenous people racialized people neurodivergent people people with disabilities and individuals from gender and sexually diverse communities with intersectional identities. OTG is committed to fostering an inclusive equitable and accessible environment. If you require accommodation during the selection process please contact  

If youre ready to be part of our dynamic team in one of the worlds most diverse cities dont wait any longerapply now!

While we appreciate your interest only selected candidates will be contacted for interviews. Please note that we do not accept agency submissions.

Remote Work :

No

Employment Type :

Full-time