This role is ideal for experienced cybersecurity professionals with expertise in Tenable Nessus, vulnerability management, security engineering, risk assessment, and enterprise network security.
Adecco is currently hiring a Cybersecurity Specialist for a contract opportunity supporting a large-scale enterprise cybersecurity environment in Ottawa, ON. This role is ideal for experienced cybersecurity professionals with expertise in Tenable Nessus, vulnerability management, security engineering, risk assessment, and enterprise network security.
Pay Rate: $80 000 - $115 000/year
Shift: Monday to Friday | 8:00 AM - 4:30 PM
Job type: Temporary contract 39 weeks | Full time
Vacancy Status: This posting is for an existing vacancy .
Here's why you should apply: Paid weekly accurate and on time
Strong health and safety programs
Medical and dental benefits once qualified
Free training programs
New and quicker onboarding process
Responsibilities: Vulnerability Management & Security Operations Administer, configure, and optimize Tenable Nessus vulnerability management solutions.
Perform vulnerability scanning, analysis, remediation validation, and reporting activities.
Develop and improve scanning strategies, policies, and vulnerability management workflows.
Conduct risk-based vulnerability assessments and provide remediation recommendations.
Security Engineering & Integrations Design and maintain vulnerability management architectures and supporting documentation.
Integrate vulnerability management tools with SIEM, asset management, endpoint security, and other cybersecurity platforms.
Identify opportunities to improve automation, reporting, and operational efficiency.




Technical Advisory & Stakeholder Support Provide technical guidance and support to cybersecurity and infrastructure teams.
Participate in stakeholder meetings, project planning sessions, and technical reviews.
Develop technical documentation, implementation plans, operating procedures, and security recommendations.
Support compliance with cybersecurity frameworks, standards, and best practices.
Contribute to risk assessments, security reviews, and continuous improvement initiatives.
Assist with security awareness, documentation, and knowledge-sharing activities.
Qualifications and Skills: Diploma or degree in Computer Science, Information Technology, Cybersecurity, Network Administration, or a related field.
6+ years of experience in cybersecurity, vulnerability management, or security engineering.
Extensive experience with Tenable Nessus and enterprise vulnerability management programs.
Experience deploying, configuring, and maintaining vulnerability scanning infrastructure.
Strong understanding of CVSS scoring, vulnerability prioritization, and remediation strategies.
Experience supporting the full vulnerability management lifecycle, including scanning, analysis, remediation, validation, and reporting.
Knowledge of cybersecurity frameworks such as NIST, CIS Controls, or similar standards.
Experience integrating security tools, APIs, SIEM solutions, and asset management platforms.
Excellent analytical, troubleshooting, communication, and documentation skills.
Experience mentoring junior cybersecurity professionals is considered an asset.
Current Secret Security Clearance, or held a Secret Clearance within the last 6 months.
Legally authorized to work and reside in Canada.

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📌 Cybersecurity Specialist (Ontario)
🏢 Adecco Canada
📍 Ontario