Senior Designer, Communications (OT Network Architect) (13484)

Toronto Transit Commission (TTC); Toronto; Hybrid; CAD 116,000 - 145,000; Full time

Benefits offered by this job

Hybrid work environment

Hillcrest location visits

Job summary

Toronto Transit Commission (TTC) in Toronto seeks a Senior Designer, Communications (OT Network Architect) to lead design, architecture, and maintenance of OT network systems for critical transit operations.

You will provide engineering guidance, supervise the network team, and coordinate with Operations, Cybersecurity, IT, and external partners on capital projects and modernization efforts.

Qualifications

• University degree in a related discipline or equivalent experience.
• Proficiency with networking protocols: TCP/IP, DNS, DHCP, VLANs, routing.
• Certifications such as CCNP, CISSP would be assets.
• Strong knowledge of OT networks, industrial comms, telecoms infrastructure.

Responsibilities

• Develop and maintain OT network architecture, standards, and design frameworks.
• Lead planning, design, integration, testing, and commissioning of OT network solutions for projects.
• Set network design standards, specs, and cybersecurity requirements for reliability and security.

Skills

University degree in CS/EE

TCP/IP DNS DHCP VLANs routing

CCNP

CISSP

OT networks

Enterprise OT architecture

Education

University degree in Computer Science or Electrical/Electronics Engineering

Job description

Department: Signals/Electrical/Communications

Salary Information: $115,570.00 - $144,526.20

Employment Type: Regular (Hybrid)

New or Existing Vacancy: New

Weekly Hours: 35 Off Days: Saturday/Sunday Shift: Day

Posted On: August 10, 2026

Last Day to Apply: August 21, 2026

Reports to: Assistant Manager, Design and Coordination

The Toronto Transit Commission (TTC), North America's third largest transit system and recognized as one of the top places to work in the GTA has introduced its new 2024-2028 TTC Corporate Plan - Moving Toronto, Connecting Communities which continues the TTC’s legacy of delivering service to hundreds of millions of customers a year. The TTC’s new vision and mission statements also help promote the many environmental, social equity and economic benefits that the TTC provides:

Vision: Moving Toronto towards a more equitable, sustainable, and prosperous future.

Mission: To serve the needs of transit riders by providing a safe, reliable, efficient, and accessible mass public transit service through a seamless integrated network to create access to opportunity for everyone.

The full Plan can be viewed on ttc.ca.

Looking for a new and exciting job opportunity? We are looking for a Senior Designer, Communications (OT Network Architect) to join our team!

This position performs design duties and manages the activities associated with the network design and/or maintenance of systems and equipment related to assigned work. The role provides design and technical support and guidance to staff. Work includes coordinating design services with operating, construction and commissioning schedules. Inspecting, assessing, and preparing design details for the modification and rehabilitation of various communications to ensure acceptable standards of performance and reliability. Conducting comprehensive testing programs, diagnosing complex network problems, preparing reports and recommendations related to design work requirements, priorities, budgets and schedules.

The role provides overall engineering expertise, support and guidance to maintenance staff on a 24-hour basis.

What You Will Do

• Develop and maintain the architecture, standards, and design frameworks for Operational Technology (OT) network infrastructure supporting critical transit operations.
• Lead the planning, design, integration, testing, and commissioning of OT network solutions for capital expansion, state-of-good-repair, and modernization projects.
• Establish network design standards, technical specifications, and cybersecurity requirements to ensure reliability, availability, maintainability, and security of operational systems.
• Conduct architecture reviews and provide technical governance for network-related projects to ensure compliance with corporate standards and industry best practices.
• Evaluate emerging networking, telecommunications, and cybersecurity technologies and provide recommendations for future implementation.
• Provide senior technical leadership and subject matter expertise related to OT network architecture, network security, routing, switching, wireless communications, and system integration.
• Collaborate with Operations, Maintenance, Cybersecurity, Information Technology, Engineering, and external stakeholders to support the delivery of safe and reliable transit services.
• Lead root cause investigations and complex technical assessments involving critical network infrastructure and operational systems.
• Provide supervisory leadership to the Network Team, including assigning work, establishing priorities, monitoring workload, and ensuring projects and operational activities are completed safely, efficiently, and in accordance with established standards.
• Lead, coach, mentor, and develop technical staff by providing guidance, training, performance feedback, and support for professional development.
• Plan, coordinate, and oversee the daily activities of the network team to ensure reliable operation, maintenance, and enhancement of Operational Technology (OT) network infrastructure.
• Participate in workforce planning, recruitment, onboarding, and performance management processes in accordance with TTC policies and procedures.
• Manage consultant and contractor resources, reviewing deliverables and ensuring compliance with contractual obligations, technical requirements, and project schedules.

As a TTC employee, you will be responsible for promoting a respectful work and service environment that supports diversity, inclusion, and is free from harassment and discrimination. You will provide leadership in the development and implementation of inclusive and accessible policies, programs and/or services for employees and customers in accordance with TTC’s commitments and obligations under the Ontario Human Rights Code (OHRC) and Related Orders, the Accessibility for Ontarians with Disabilities Act (AODA), and TTC’s policies. You will also be participating in the TTC Customer Service Ambassador Program.

What Qualifications Do You Bring?

• Completion of a university degree in a related discipline (i.e., Computer Science, Electrical/Electronics Engineering) or a combination of education, training and experience deemed to be equivalent.
• Proficiency in networking protocols such as TCP/IP, DNS, DHCP, VLANs, and routing protocols.
• Certifications such as CCNP, CISSP or equivalent would be considered an asset.
• Strong knowledge of Operational Technology (OT) networks, industrial communication systems, telecommunications infrastructure, and associated network equipment.
• Several years of progressively responsible experience in the design, architecture, implementation, and lifecycle management of enterprise and Operational Technology (OT) network infrastructures. Experience developing network architecture standards, evaluating emerging technologies, preparing technical specifications, and providing technical leadership for complex, multi-disciplinary capital projects is required.
• Demonstrated experience developing secure network architectures for mission-critical environments, including network segmentation, resiliency, redundancy, cybersecurity controls, disaster recovery, and integration of OT and IT systems.

What We Offer

• Commitment to creating a diverse, equitable and inclusive culture that promotes a sense of belonging and represents and reflects the needs of the communities we serve.
• The Communication Engineering team operates in a hybrid work environment, combining remote work with in-office collaboration. Team members are typically expected to work from our Hillcrest location (1138 Bathurst Street, Toronto). However, on occasion you will be required to visit work sites based on the assigned work.

Commitment to EDI

The TTC is committed to upholding the values of equity, diversity, anti-racism and inclusion in the delivery of its services and in its workplaces. The TTC is committed to fostering a diverse workforce that is representative of the communities it serves at all levels of the organization and supports an inclusive environment where diverse employee and community perspectives and experiences bring value to the organization. The TTC encourages applications from all applicants, including members of groups with historical and/or current barriers to equity, including but not limited to, Indigenous, Black and racialized groups, people with disabilities, women and people from the LGBTQIA+ community. The TTC values and supports an inclusive and barrier-free recruitment and selection process. Accommodations for applicants are available upon request throughout the recruitment and selection process, including for those who identify as having a disability. Please contact Talent Management at [phone] or [e-mail] . Any information received related to an accommodation will be addressed confidentially.

General Prohibition in Hiring Process

• The use of any artificial intelligence (AI) tool including, but not limited to, ChatGPT and Microsoft Copilot, to generate or produce any information or materials to be submitted or any response to any assessment question or any interview question, is prohibited.
• All information and materials you submit, including resume, cover letter, and assessment responses, are your own original work without the use of any AI tool
• During any interview, your response to any interview question is your own without the use or assistance of any AI tool or any person.
• You will not disseminate or disclose to any person any interview question.

Should you breach the prohibition of AI tool use, or information dissemination or disclosure, you will be in violation of TTC’s hiring process and TTC may withdraw your application and may prohibit you from participation in the TTC hiring process.

Relatives of TTC Employees

The TTC’s policy prohibits relatives of current TTC employees from being hired, assigned, transferred or promoted into positions, where there is a conflict of interest due to a relationship. Should you be selected for an interview, you will be required to disclose the name, relationship and position of any relative who is a current TTC employee.

We thank all applicants for their interest but advise only those selected for an interview will be contacted.