Software Developer, Java Developer, Full Stack Developer

CBTS serves enterprise and midmarket clients in all industries across the United States and Canada. CBTS combines deep technical expertise with a full suite of flexible technology solutions--including Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, CBTS delivers comprehensive technology solutions for its clients' transformative business initiatives.

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OnX is a leading technology solution provider that serves businesses, healthcare organizations, and government agencies across Canada. OnX combines deep technical expertise with a full suite of flexible technology solutions—including Generative AI, Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, OnX delivers comprehensive technology solutions for its clients’ transformative business initiatives.

For more information, please visit .

We are seeking experienced Java Developers to join a focused remediation team responsible for addressing security issues in legacy web applications.

In this hands‑on role, you will work on fixing identified vulnerabilities and upgrading outdated libraries.

The position requires strong familiarity with Java-based web applications built on legacy technologies.

• Update web application codebases built with JSP and traditional Java frameworks, applying secure coding practices with a focus on resolving Cross‑Site Scripting (XSS) and similar vulnerabilities.
• Upgrade outdated dependencies such as commons-fileupload, springframework, etc. to address known vulnerabilities.
• Collaborate effectively using Git, following established workflows and participating in peer‑reviewed pull requests.

• 5+ years of experience in Java web application development
• Strong hands‑on experience with JSP, Servlets, and traditional Java frameworks
• Experience upgrading and managing Java dependencies using tools like Maven or Gradle
• Familiar with Eclipse IDE for Java development
• Proficiency in using Git, with solid understanding of branching, pull requests, and code reviews
• Good communication skills and ability to work independently or in a distributed team

Four years of College resulting in a bachelor's degree or equivalent