API Architect

51789-  Markham -  Regular   Not Applicable/Optional  

Hiring salary range: $4,374.92 - $6,249.88 / Bi-weekly

Hydro One is proud to be the largest electricity transmission and distribution provider in Ontario, serving nearly 1.5 million customers. We have a long history in the industry with our roots dating back over 110 years to 1906. Since then, we have worked to grow and evolve to meet the changing needs of our customers and communities across Ontario. Today, we’re focused on providing exceptional customer service and ensuring we are building safe communities where we live, work and play.

It’s an exciting time to join the team at Hydro One!

Job Function:

Provide consultation and support to internal and external stakeholders regarding integration platform use, business process analysis, technology strategy, and technology product selection specific to API platform(s). Oversee and plan the end-to-end API and Integration reference architecture. Define, assess, design, build, test and deploy the API integrations. Responsible for API security configuration, key validation, authentication, authorization and identity, traffic management, token management and updating micro service inventory. Provide leadership and guidance to teams of professional and technical staff engaged in the software development, deployment, and operational support to stipulate the technical direction and approach for each API design and implementation with enterprise-wide impact. Contribute to the development and maintenance of architectures and standards for technology, data and applications used by the Hydro One for API use.

Job Description:

1. Oversee and plan the end-to-end API and Integration reference architecture. Define, assess, design, build, test and deploy the API integrations. Responsible to define API security configuration in collaboration with ISD Security teams, key validation, authentication, authorization and identity, traffic management, token management and updating microservice inventory. Review and approve solution architecture designs and ensure the performance and security of the solutions.
2. Provide leadership and guidance to teams of professional and technical staff assigned to assist with the development, integration, and implementation for each API solutions with enterprise-wide impact. Collaborate with development and cross-functional teams within Hydro One to stipulate the technical direction and approach for each API design and implementation.
3. Plan work, coordinate staff activities, advise and provide guidance to staff on technical or business issues, monitor progress and take necessary corrective actions to ensure successful completion of assigned duties. Monitor performance of staff assigned to teams and advise managers on staff performance.
4. Be responsible in the development and maintenance of policies, strategies, standards, and elements of architecture for technologies, data and applications used by the company for API use. Review project scope, solution blueprints, process and technical design documentation, test strategies etc. to ensure that the needs of the business are being met. Provide expert guidance to others in the application of API architectural principals and frameworks.
5. Provide leadership and guidance to teams of professional and technical staff (such as architects and engineers) engaged in the development, deployment, and operational support to provide the technical direction and approach for each API design and implementation with enterprise-wide impact.
6. Provide consultation and support to internal stakeholders regarding integration platform use, business process analysis, technology strategy, and technology product selection specific to API (s). Provide expert advice on the design and implementation of complex integrations. Oversees API and Integration architecture implementation and ongoing refinement activities.
7. Maintain up-to-date knowledge of existing and emerging technology through literature reviews, self-study and participation in workshops, user groups, seminars, and detailed information exchanges with other utilities.
8. Communicate technical and strategic insights about the business value of digital offerings to business leaders and stakeholders. Serve as liaison to the business community, to ensure that its needs are fully understood by the project team.
9. Assess impacts of proposed solutions and architecture requirements through consultation with staff at all levels from across the Company and ensure that API architecture supports realization of technology investment.
10. Ensure and augment the principles of technology strategy. Analyze technology industry and market trends and determine potential impact upon the business services and processes.
11. Design and participate in the governance activities associated with ensuring compliance with the enterprise business architecture. Assess (via appropriate measurement) and communicate the achievement and impact of the enterprise business architecture.
12. Develop relationships with professional organizations, user groups, and industry trade groups to stay current with business information and technology trends.
13. Perform other duties as required.

Selection Criteria:

Education :

• Requires in-depth knowledge of Information Technology.
• Requires good knowledge of English to communicate effectively with others, provide effective presentations, and create and/or update documentations such as reports. This knowledge is normally considered to be acquired through 4 years of University Training.

Experience :

• Requires experience in software development, specifically with developing, architecting and/or managing diverse API-based web and mobile applications to quality standards.
• Require experience with micro services and container-based application deployment, service-oriented architecture, REST techniques, event-driven design, Node.js or other runtime environments, and CI/CD tools (e.g., Jenkins, GitHub). Requires strong analytical problem-solving skills with ability to apply their technical experience and knowledge to develop APIs, troubleshoot and develop actionable recommendations to support business needs within complex and changing environments.
• Requires strong written and verbal communication skills and interpersonal skills to collaborate and coordinate with various stakeholders. A period of over 10 years and up to and including 12 years is considered necessary to gain this experience. 

At Hydro One we understand that the success and strength of our business rests with our people. When we develop their skills, we are investing in both their success and ours. To secure the best talent, we seek to create a workforce that reflects the diverse populations of the communities where we live and work and to create a culture based on safety, innovation and inclusiveness.

We are honoured to be recognized by Forbes in its list of Canada’s Best Employers for 2026. 

Thank you for considering a career with Hydro One, we welcome applications from all qualified candidates. If you are having difficulty using our online application system and you need an accommodation due to a disability, please email View email address on jobs.hydroone.com . Hydro One will provide reasonable accommodation for qualified individuals with disabilities in the job application process.

Please note this email is only for accommodation requests. Resumes sent to this email address will not be considered.

"Employer of the year 2026"

Deadline: July 7, 2026

The base salary for this role considers a variety of factors, including candidates' knowledge, skills, experience, education, and any applicable collective agreement requirements for union-represented positions. Hydro One provides an extensive offering of programs to promote a culture of safety, wellbeing, inclusivity, and sustainability to enable our employees to be the best version of themselves. For management roles, compensation is based on the principle of pay-for performance compensation philosophy, and the amount of annual adjustments and incentive payments depends on how well you and the company perform (subject to plan terms). We encourage open dialogue about compensation with our Talent Acquisition Team, who can provide more detailed information specific to this role.

This posting is for an existing vacancy. 

Hydro One uses AI tools to assist in the screening and assessing candidates for this role. Our use of AI does not replace human decision-making.

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We thank all applicants for their interest in a career at Hydro One; however, only those candidates who are selected for an interview will be contacted.