Job Summary
As a Network L3 Engineer, you will perform advanced troubleshooting to ensure high performance, availability, and security of complex network infrastructures. You will lead major upgrades, develop strategic network plans, analyze traffic and security threats, and provide technical leadership and mentorship to junior engineers. This role is part of a high-impact project environment and requires deep networking expertise across multi-vendor platforms.
Key Responsibilities
• Expert-Level Troubleshooting: Handle complex and critical network issues that require deep expertise, often performing root cause analysis to prevent recurring incidents.
• Strategic Planning: Develop long-term strategies for network growth and optimization, aligning network capabilities with business goals.
• Security Management: Design and implement advanced security measures, develop security policies, and monitor network traffic to identify and mitigate threats.
• Project Leadership: Lead major network projects such as upgrades, migrations, and the integration of new technologies.
• Documentation & Best Practices: Create and maintain detailed documentation for network configurations, processes, and procedures.
• Mentorship & Training: Provide technical guidance, training, and mentorship to L1 and L2 network engineers.
• Vendor & Stakeholder Collaboration: Coordinate with external partners and vendors for solutions, and collaborate with other IT professionals and management.
Key Skills & Knowledge
• Deep Understanding of Protocols: In-depth knowledge of network protocols, switching, routing, and wide-area network (WAN) technologies.
• Technical Expertise: Hands-on experience with multi-vendor network equipment, including routers, switches, firewalls, and load balancers.
• Problem-Solving: Strong analytical and problem-solving skills to address complex network challenges under pressure.
• Security Focus: Experience with security tools and frameworks, including intrusion detection systems (IDS) and network access control (NAC).
• Communication: Excellent verbal and written communication skills for clear reporting and collaboration.
Job Requirements
• Essential Skills: Zscaler (Proxy), Palo Alto Firewall
• Nice to Have Skills: SD WAN – Velo Cloud, Cisco Meraki.
• Strong experience in troubleshooting and securing networks.
• Advanced certifications such as the Cisco Certified Network Professional (CCNP) are recommended.
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Things to know before you apply
- Work authorization: Cognizant will only consider applicants for this position who are legally authorized to work in Canada without requiring employer sponsorship, now or at any time in the future.
- Accommodations: If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
- AI in hiring: We use artificial intelligence (AI) tools to help us screen and assess applications more efficiently. Our team performs additional human review and ultimately decides who moves forward in our hiring process.
- Open position: Unless otherwise stated, this job posting is for an open position on our team.
- Language proficiency: We ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.
- Inclusion: Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
About Cognizant
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
