Java Developer – Web Security Remediation

Contract: 6 months +

Location: Toronto (light hybrid/(remote is possible for Sr candidates outside of GTA)

Main Deliverables

- Remediate vulnerabilities in legacy Java web applications.
- Upgrade outdated libraries and dependencies.
- Maintain and enhance applications built on older Java web technologies.
- Deliver code fixes through established development and source control processes.

Technical Stack

- Java (Java-based web applications built on legacy technologies)
- JSP (JavaServer Pages)
- Servlets
- Traditional Java Web Frameworks
- Vulnerability remediation (tools such as Checkmarx or Snyk)
- Maven / Gradle
- Git
- Eclipse IDE
- Jira
- Spring Framework
- Apache Commons FileUpload

Requirements

- 7+ years of Java web application development experience.
- Strong hands-on experience with legacy Java applications
- Deep expertise with JSP, Servlets, and traditional Java frameworks.
- Familiarity with secure coding principles.
- Experience working with vulnerability remediation (fixing identified vulnerabilities and upgrading outdated libraries)
- Experience modifying, debugging,



and maintaining mature enterprise codebases.
- Experience upgrading Java libraries and dependencies using Maven or Gradle.
- Robust understanding of dependency management and version upgrades.
- Proficiency with Git, including branching, pull requests, and code reviews.
- Experience using Eclipse IDE for Java development.

Responsibilities

- Analyze and remediate vulnerabilities identified through automated scanning tools.
- Modify and maintain legacy Java web applications built with JSP, Servlets, and traditional frameworks.
- Upgrade vulnerable or unsupported libraries while ensuring application stability.
- Resolve issues related to outdated dependencies and framework versions.
- Perform testing and validation of code changes after remediation activities.
- Manage source code changes through Git-based workflows and peer-reviewed pull requests.
- Track remediation work and development activities using Jira.
- Support ongoing maintenance and modernization efforts for legacy enterprise applications.

📌 Java Developer – Web Apps Security Remediation (Ontario)
🏢 Company
📍 Ontario