Top Cybersecurity Jobs in Montréal, QC

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

Conducts advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Responsibilities include discovering and exploiting systemic vulnerabilities, penetration testing, developing proof-of-concept exploits, researching AI and agentic security threats, building automated research tooling, coordinating remediation, mentoring security professionals, and communicating findings to engineering and security communities.

Own and evolve GitLab’s authorization systems across its Ruby on Rails monolith and next-generation Rust policy engine. Design fine-grained permissions for users, tokens, roles, and AI agents; secure GraphQL and REST APIs; lead feature-flagged rollouts and migrations; improve performance and reliability; and collaborate across authentication, platform, AI, and modular-service teams in a distributed asynchronous environment.

Owns GitLab’s global security awareness and human-risk program, including training, phishing simulations, behavior-change initiatives, security culture campaigns, multimedia content, platform administration, reporting, vendor management, policy support, audit evidence, and remediation tracking. The role requires measurable risk reduction across a globally distributed enterprise and strategic influence across technical and non-technical teams.

Lead enterprise IAM and AI access security engineering across Okta, GCP, AWS, and IGA platforms. Replace low-code automation with tested Python services, codify identity infrastructure using Terraform/OpenTofu/Pulumi, implement least-privilege and privileged-access controls, govern human and non-human identities, and secure enterprise AI platforms. Drive cross-functional initiatives, develop technical roadmaps and proposals, support compliance, and mentor engineers.

Build and improve GitLab authentication services across Ruby on Rails and Go codebases. Design token issuance, validation, identity, access management, passwordless authentication, workload identity federation, and secure automation features. Migrate authentication paths to GATE while supporting multiple deployment models, address reported vulnerabilities, optimize performance, review code, establish engineering standards, and collaborate on complex projects in a remote, asynchronous environment.

Lead corporate endpoint security architecture with a focus on macOS, designing secure-by-default controls, automation, patching, software distribution, and security baselines across macOS, iOS, Windows, and Linux. Manage configurations through Terraform, GitOps, version control, CI pipelines, and automated rollouts. Partner with IT and security teams to improve telemetry, detection, response, auditability, and operational efficiency. Mentor engineers and serve as a senior escalation point for complex endpoint security issues in a fully remote environment.

Build and maintain Ruby on Rails backend features for vulnerability management, including security dashboards, reports, and ingestion pipelines. Improve system performance, reliability, and scalability; collaborate across backend, frontend, product, design, and security teams; review code; address technical debt; and participate in on-call rotations. The role requires relational database experience, distributed-team collaboration, technical problem-solving, and contributions across the stack when needed.

Lead GitLab’s Security Posture Management team within Product Security. Drive governed security capability rollouts across the software estate, establish secure configuration baselines, build software supply chain security, manage risk registers and posture metrics, support audit evidence, and provide customer-zero feedback to Product and Engineering. Hire, coach, and develop the team while representing GitLab’s security practices externally and driving measurable risk reduction in a remote, asynchronous environment.

Design, maintain, and extend abuse detection and prevention systems for GitLab's SaaS platform. Serve as a core maintainer of a Ruby on Rails monolith, build anomaly detection and agentic AI mitigations, automate abuse response, collaborate with peer engineering and security teams, and produce runbooks and operational documentation.