Duration: Until 31 Dec (possibility of extension) Location: Primarily remote, with onsite presence in the GTA as required.

Join a Gate Appointment Modernization program supporting enterprise transportation and terminal operations workflows across a major North American organization.

This role focuses on designing, developing, integrating, and testing Spring Boot backend services and APIs supporting appointment management, booking, reservation validation, and slot selection workflows.

The environment includes distributed delivery teams, enterprise integrations, and high-volume transactional application modernization initiatives.

Must Haves 7+ years of Java application development within enterprise environments Solid hands-on experience with Spring Boot , RESTful APIs, and microservices Strong SQL and relational database development experience Experience with Azure Dev

Ops , Git-based source control, and CI/CD development practices Education and professional experience in software development or application modernization programs Nice to Have Experience in transportation, logistics, terminal operations, booking, reservation,



or appointment-management platforms Experience developing applications involving high-volume transactional workflows Experience with application security, authentication/authorization, and enterprise API security patterns Experience working with distributed frontend, backend, and integration teams Experience working within Agile/Scrum delivery teams Responsibilities Design and develop scalable backend services using Java and Spring Boot Develop and maintain REST APIs and microservices supporting gate appointment functionality Implement backend business logic supporting appointment creation and management workflows Support integrations required for booking, reservation, and gate appointment functionality Develop unit and integration tests and support system and integration defect resolution Troubleshoot application, API, and integration issues across development and test environments Participate in solution design, code reviews, sprint planning, refinement, and demos

📌 Senior Java / Spring Boot Developer to develop and integrate backend services using Java, Spring Boot, REST APIs, and microservices (Toronto)
🏢 S.i. Systems
📍 Toronto