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Application Security Engineer - AI-Assisted Remediation Category: Architecture
Main location: Canada, Montréal
Position ID:J1026-1891
Employment Type: Full Time
Position Description: Senior • Assesses risks and remediates vulnerabilities with the support of AI coding agents
Your future duties and responsibilities: Responsibilities
• Assess security risks in complex, legacy or poorly documented applications, and define remediation work in collaboration with development, architecture and security teams.
• Analyze and confirm vulnerabilities identified by tools or security reviews, taking into account the code, actual exposure, existing controls and impact on the client's business operations.
• Prioritize fixes based on risk, technical dependencies and operational constraints; document false positives and residual risks for decisions by the accountable stakeholders.
• Remediate vulnerabilities in code, libraries, dependencies and configurations; resolve compatibility issues associated with upgrades and component changes.
• Use AI coding assistants and agents to accelerate analysis, fix preparation, test creation and documentation, while maintaining rigorous human validation.
• Develop security, regression and integration tests to verify the effectiveness of fixes and confirm that expected functional behaviour is preserved.
• Conduct code reviews and the checks needed to confirm that proposed fixes, including those generated with AI, do not introduce new vulnerabilities.
• Integrate security controls and fix verification into pull requests and CI/CD pipelines, with acceptance criteria and traceable evidence.
• Prepare and review deployment plans, post-deployment validation in production and rollback procedures, in collaboration with delivery and operations teams.
• Compile remediation evidence, document limitations and residual risks, and share secure development practices and reusable fixes with teams.
Required qualifications to be successful in this role: Required qualifications
• At least 5 years of experience in software development or application security, with demonstrated experience remediating vulnerabilities in code.
• Strong development and code analysis skills in at least one environment among C#/.NET, Java, Python or JavaScript/TypeScript, including Node.js.
• Proficiency in secure development principles and common application vulnerabilities, including authentication, access control, injection and data protection issues.
• Hands-on experience with static application security testing (SAST), software composition analysis (SCA) and secrets detection tools; ability to interpret and validate their findings.
• Experience upgrading libraries and dependencies, resolving compatibility issues and remediating existing applications.
• Proficiency in automated testing, debugging, Git, code reviews, and continuous integration and delivery practices.
• Demonstrable hands-on experience with at least one AI coding assistant or agent, such as GitHub Copilot, Codex, Claude Code or Cursor, with the ability to verify the security and suitability of its proposals.
• Ability to use AI tools in accordance with requirements for protecting source code, secrets and data, and to recognize situations that require in-depth human analysis.
• Ability to explain risks, work with development teams and produce clear, verifiable evidence of remediation.
• Bilingual in French and English.
Assets
• Experience with remediation programs covering multiple applications or large volumes of vulnerabilities.
• Experience with dynamic application security testing (DAST), threat modelling or application penetration testing.
• Knowledge of software bills of materials (SBOMs), dependency traceability and software supply chain risks.
• Experience securing cloud applications, APIs and containers, or a relevant application security certification.
• Experience delivering solutions in regulated environments or environments with formal validation and remediation evidence requirements.
Compensation and position status
CGI provides a reasonable estimate of the pay range for this role, taking into account factors such as skill set, geographic market, experience, training, and licenses and certifications. Compensation decisions depend on the facts and circumstances of each candidate.
#LI-NO1
Use of the term 'engineering' in this job posting refers to the technical sense related to Information Technology (IT) and does not imply that the individual practices engineering or possesses the requisite license as prescribed by the applicable provincial or territorial engineering regulator. We are seeking individuals with expertise in IT engineering-related functions, but licensure from an engineering regulator is not a prerequisite for this position. Engineering is a regulated profession in Canada which is restricted in terms of use of titles and designation.
Skills: - .NET
- C#
- GIT
- Java
- Node.Js
- Python
