Network Security Engineer (Contract)

Location: Ottawa, ON (Hybrid, 2 days onsite)
Compensation: $95–$120/hour INC
Language: Strong written and verbal communication in English required
Duration: April to December 2026
Background Check Requirement: Enhanced security clearance required

About the Opportunity
This is an exciting opportunity to join a large, complex organization within a critical infrastructure environment, supporting a major data centre migration initiative. You will play a key role in ensuring secure and seamless application transitions by working at the intersection of network security, infrastructure, and application teams.

In this role, you will collaborate with cross-functional stakeholders to analyze application communication flows, implement firewall policies, and maintain system integrity throughout the migration. This is a hands-on, high-impact opportunity where your work directly contributes to the stability and security of enterprise systems operating in a real-time environment.

What’s In It for You

• Exposure to large-scale infrastructure transformation projects
• A collaborative environment that values precision, teamwork, and accountability
• Opportunity to work alongside experienced network and security professionals
• A workplace that supports learning and continuous improvement

Your Responsibilities

• You’ll analyze firewall logs and traffic patterns to identify and validate application communication flows
• You’ll translate business and technical requirements into firewall policies and rule sets
• You’ll implement and test firewall configurations to ensure secure and reliable connectivity
• You’ll troubleshoot network and security issues in a production environment
• You’ll document application dependencies, configurations, and changes to support audit and operational needs

Skills and Qualifications

• 8–10 years of progressive experience in network security within enterprise environments
• Hands-on expertise with Check Point technologies, including Security Gateways, MDS, Smart Console, and GAIA
• Strong experience creating, implementing, and troubleshooting firewall rules
• Proven ability to analyze logs and resolve connectivity issues
• Experience working in structured, high-availability or production environments
• Exposure to load balancing concepts, including L4 and L7, is an asset
• Strong communication skills with the ability to collaborate across technical teams

Why Partner with Altis
If you’ve never worked with a staffing agency before, we make it easy. We work with top employers across Canada who have great jobs to fill, each vetted and verified by our team. When you apply for a job with Altis, we get to know you as a candidate and learn about your strengths. Then, if you’re a solid match, we handle all the logistics, advocate for you as a candidate for the role, provide access to coaching, and connect you directly with the hiring manager. And rest assured, all our services are free of cost for candidates.

We appreciate the time and effort all applicants invest in their submissions. Please note that only candidates shortlisted for this role will be contacted directly. However, your profile will remain under consideration for future opportunities that align with your experience and career goals. All qualified applicants will receive fair consideration for employment. We welcome individuals of all backgrounds, experiences, and identities including those who identify as women, members of racialized groups, Indigenous Peoples, persons with disabilities, and 2SLGBTQIA+ communities. If you require an accommodation, please review our accessibility policy and reach out to our accessibility officer with any questions. Our human recruiters review all applications and always make the final hiring decision. On occasion, we also use AI-assisted tools to help review applications.