Senior Software Developer in Toronto

Metrolinx is connecting communities across the Greater Golden Horseshoe. Metrolinx operates GO Transit and UP Express, as well as the PRESTO fare payment system. We are also building new and improved rapid transit, including GO Expansion, Light Rail Transit routes, and major expansions to Toronto’s subway system, to get people where they need to go, better, faster and easier. Metrolinx is an agency of the Government of Ontario.

At Metrolinx, equity, diversity and inclusion are essential to living our values of serving with passion, thinking forward and playing as a team. This role is an in‑office position based at our 277 Front Street West office location. Our team is highly collaborative, and much of our work benefits from in‑person co‑creation, relationship‑building, and hands‑on partnership with leaders across the organization.

We are seeking a Senior Software Developer (Integrations) to design, develop, and deliver scalable, high-performing integration solutions across enterprise systems. This role supports critical platforms within Transit Operations and enterprise technology portfolios by enabling real-time interoperability, API development, and cloud-based integrations. The ideal candidate brings strong technical leadership, hands‑on development expertise, and the ability to translate business needs into robust technical solutions.

What will I be doing?

• Design, develop, test, and implement integration solutions, APIs, and enterprise applications aligned with SDLC best practices
• Lead technical analysis, architecture, coding, and deployment of scalable and secure systems
• Develop and maintain system integrations across cloud and on‑premise environments
• Define and document technical specifications and interface designs
• Collaborate with cross‑functional teams, stakeholders, and vendors to deliver solutions
• Ensure solutions align with enterprise architecture, cybersecurity, and data governance standards
• Lead code reviews, quality assurance, and troubleshooting activities
• Mentor junior developers and promote best practices in software development
• Support continuous improvement, performance optimization, and system reliability

What Skills and Qualifications Do I Need?

• Degree in Computer Science, Engineering, or related field (or equivalent experience)
• Demonstrated years of experience in software development, including technical leadership roles.
• Experience with cloud platforms (Azure Container App, ACR, Azure Functions, Key Vault preferred) and DevOps/CI-CD pipelines
• Knowledge of security protocols (OAuth2, SAML, encryption) and API management
• Experience with messaging/event streaming (e.g., Azure Event Hub, Service Bus, RabbitMQ)
• Familiarity with Agile methodologies.

Additional Assets

• Experience with enterprise systems, data platforms, or real‑time integrations
• Certifications such as Microsoft Certified Developer or Agile/Scrum credentials

All applicants must be legally entitled to work in Canada. Please be advised that a Criminal Record Check may be required of the successful candidate.

We invite all interested individuals to apply and encourage applications from members of equity‑deserving communities, including those who identify as Indigenous, Black, racialized, women, people with disabilities, and people with diverse gender identities, expressions and sexual orientations. We thank all applicants for their interest, however, only those selected for further consideration will be contacted.

Accommodation: Metrolinx is an equal opportunity employer and committed to a diverse and inclusive workforce. We are also committed to offering reasonable accommodation to job applicants in accordance with applicable legislation. If you require assistance or an accommodation at any point during the hiring process, please contact us at: 416-202-5601 or email hr.recruitment@metrolinx.com.