Java expertise drives enterprise full-stack development in Toronto, with this fully onsite contract focused on secure APIs and scalable applications.
As a Senior Software Developer, you will design, develop, integrate, and maintain large-scale web applications. The work spans front-end, backend, workflow, API, and data-access layers using Java and up-to-date web frameworks. You will build reusable platform services and microservices within an Agile workplace.
Key Responsibilities: Design and maintain enterprise application code across full-stack layers
Build scalable Java microservices, REST APIs, and web services
Optimize relational databases, queries, and data transformation pipelines
Implement OAuth 2.0, JWT, SSL, and identity integrations




Maintain Azure Dev Ops pipelines and automated deployment scripts
Requirements: Ten or more years designing large-scale multi-client web applications
Extensive hands-on Java and relational database development experience
Significant REST API and microservices architecture experience
Experience with security gateways, JWT, OAuth 2.0, and SSL
Experience with SQL tuning, middleware, conversion, and data migration
Apply senior Java development, microservices, database optimization, and security expertise to enterprise applications in Toronto.
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📌 Senior Java Full Stack Developer Toronto
🏢 randstad canada
📍 Toronto