Building Controls Technician

Duties And Responsibilities

On-site Network Start-up & Commissioning

Modern Niagara Building Services, a proud part of BCTS, is a trusted partner for building owners and facility managers across Ontario. We deliver tailored building services that help commercial, institutional, industrial, healthcare, and residential facilities operate safely, efficiently, and sustainably. From proactive maintenance and 24/7 emergency service to HVAC, plumbing, electrical systems, building automation, energy optimization, and facility support, we help our customers maximize building performance throughout the entire lifecycle of their assets.

At Modern Niagara Building Services, our people are at the heart of everything we do. Backed by the strength and resources of BCTS, we foster a collaborative, safety-first culture where innovation, accountability, and exceptional customer service drive our success. We are committed to creating an environment where employees can grow their careers while delivering reliable, responsive solutions that keep our customers' buildings operating at their best.

The Building Controls Service Technician is responsible for inspecting, maintaining, repairing, and installing building automation systems (BAS) across client sites in the GTA. Based out of our Vaughan office, this role supports field and office teams to ensure projects are executed safely, efficiently, and in alignment with Modern Niagara’s technical and safety standards. Success means delivering reliable system performance, accurate documentation, and exceptional client service.

Building Controls Service Technicians are essential for ensuring that building automation systems operate safely and efficiently. Their expertise directly impacts system reliability, client satisfaction, and project success. By providing technical leadership in commissioning, troubleshooting, and maintenance, this role helps Modern Niagara uphold its reputation for high-quality building solutions.

• Ensure BAS projects are executed safely, on schedule, and to Modern Niagara standards.
• Provide accurate system commissioning, documentation, and reporting to support operational excellence.
• Strengthen client and contractor relationships through timely communication and technical expertise.
• Support ongoing team development through mentorship, knowledge sharing, and training.

On-site Network Start-up & Commissioning

• Coordinate with installers to ensure field device installations follow best practices.
• Verify controller power, BACnet MSTP/IP configurations, and BAS network communications.
• Troubleshoot network issues using tools such as BACnet Discovery Tool, Wireshark, and Visual BACnet.
• Guide installation teams to correct deficiencies and ensure project compliance.

• Commission field controllers and end devices, validating operation of safety interlocks and mechanical equipment.
• Calibrate flow, temperature, and pressure transmitters; verify BAS input signals.
• Test valves/dampers actuators and variable speed drives; maintain accurate commissioning documentation.
• Ensure all devices and controllers are labeled according to project specifications.
• Safely lift and carry up to 50lbs and work on ladders as required.

• Download and verify controller software using Distech Controls software tools.
• Integrate 3rd party BACnet, Modbus, and Lonworks devices.
• Validate program operation, control sequences, system trends, alarms, and graphics.
• Escalate software issues to the Lead BAS Controls Technician and execute functional demonstrations for terminal units.

• Complete daily Safety Plan of the Day and maintain project documentation.
• Assist in development of graphical user interfaces, user views, and project databases under Lead BAS Controls Technician guidance.
• Upgrade and commission supervisory devices, program field devices, and support technical knowledge sharing.

• College Diploma in Electromechanical Engineering Technology or equivalent.
• Demonstrated knowledge of HVAC control systems and building automation.
• Strong verbal and written communication skills.
• Comfortable interfacing with clients, contractors, and internal teams.
• Ability to multi-task between fieldwork and other responsibilities.
• Ability to work effectively in a team-based environment with minimal supervision.
• Proficient with Microsoft software including Excel, Outlook, and Visio.

• Familiarity…