Upstaff

Software Developer - Full Stack - Senior

📍 Location
Toronto, ON
⏰ Job Type
Full-time
📅 Posted
June 06, 2026
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Job Description

Position Title: Software Developer Full Stack Client: Land & Resources Cluster Location: 40 St Clair Ave W Overview We are seeking a highly experienced Full Stack Software Developer with 15+ years of IT experience and at least 10 years of hands-on expertise in Java-based enterprise application development. The successful candidate will be responsible for modernizing legacy applications, developing and enhancing web-based solutions, supporting data migration initiatives, and delivering secure, scalable, and accessible applications within a Government of Ontario environment. This role requires strong experience across front-end and back-end technologies, Oracle databases, DevOps practices, application modernization, vulnerability remediation, and Agile delivery methodologies. Key Responsibilities Lead the design, development, testing, implementation, and maintenance of enterprise application components. Modernize legacy applications and migrate existing solutions to contemporary archite...

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