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 on‑site role involves managing Fortinet and Ubiquiti network equipment, maintaining CCTV and access control systems, and ensuring reliable LTE/Wi‑Fi and UHF communication networks in challenging field environments. 

This position requires frequent travel to multiple active construction sites, strong problem‑solving skills, and clear communication with both technical and construction teams. Candidates must be comfortable working in rugged conditions and be available for on‑call 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/Wi‑Fi Underground Network: Support, monitor, and troubleshoot LTE and Wi‑Fi 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 on‑call 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 hands‑on 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/Wi‑Fi radio networks, and UHF radio systems.
• Ability to work in physically demanding, outdoor, and challenging site conditions.
• Strong troubleshooting and problem‑solving skills.
• Excellent communication and interpersonal abilities.
• Ability to work independently and make informed decisions in the field.
• Willingness to participate in on‑call 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 hr@ontransitgroup.ca. 

If you're ready to be part of our dynamic team in one of the world's most diverse cities, don't wait any longer—apply now!

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