Network Administrator - L3

Job description

Position Description Company Profile: Founded in 1976, CGI is among the largest independent IT and business consulting services firms in the world. With 94,000 consultants and professionals across the globe, CGI delivers an end-to-end portfolio of capabilities, from strategic IT and business consulting to systems integration, managed IT and business process services and intellectual property solutions. CGI works with clients through a local relationship model complemented by a global delivery network that helps clients digitally transform their organizations and accelerate results. CGI Fiscal 2024 reported revenue is CA$14.68 billion and CGI shares are listed on the TSX (GIB.A) and the NYSE (GIB). Learn more at cgi.com. Job Title: Network Administrator - L3 Position: SSE Experience: 8+ yrs Category: IT Infrastructure Main location: Bangalore Position ID: J0526-0802 Employment Type: Full Time Qualification: Bachelor's degree in Computer Science or related field or higher with minimum 3 years of relevant experience. Job Description: Key Responsibilities The Network L3 Administrator is responsible for advanced management, troubleshooting, and optimization of enterprise network infrastructure. This includes switches, routers, firewalls, WAN/LAN links, and related technologies. The role requires deep expertise in networking, strong problem solving skills, and the ability to resolve complex issues independently while supporting enterprise scale deployments. Key Responsibilities - Manage and maintain enterprise network infrastructure (switches, routers, firewalls, WAN/LAN links). - Provide L3 support for escalated incidents, ensuring timely resolution of complex network issues. - Configure and optimize routing protocols (OSPF, BGP, EIGRP) and switching technologies (VLANs, STP, trunking). - Administer and secure firewalls (Cisco ASA, Palo Alto, Fortinet, Check Point). - Perform patching, upgrades, and configuration management across network devices. - Conduct performance tuning, capacity planning, and bandwidth optimization. - Implement network security policies, VPNs, and intrusion prevention systems. - Designing high level network architecture installing hardware and migrating sites to SD-WAN - Setting up overlay tunnels, application aware routing, and optimizing traffic policies. - Integrating SD-WAN with security solutions (SASE. Zscaler, Fortinet) to secure WAN Edges. - Automate routine tasks using Python, Ansible, or other scripting tools. - Collaborate with infrastructure, server, and security teams to ensure seamless delivery of network services. - Lead root cause analysis for critical incidents and document resolutions. - Maintain knowledge base and documentation for configurations, processes, and troubleshooting guides. **Required Skills & Experience** - 7–12 years of experience in network administration with strong L3 expertise. - Hands on experience with Cisco, Juniper, HP, or Arista switches and routers. - Strong knowledge of firewall administration (Cisco ASA, Palo Alto, Fortinet, Check Point). - Expertise in routing protocols, switching technologies, and WAN optimization. - Experience with VPNs, MPLS, SD WAN, and load balancers. - Familiarity with network monitoring tools (SolarWinds, Nagios, PRTG). - Proficiency in network automation and scripting (Python, Ansible). - Solid understanding of network security, IDS/IPS, and compliance standards. - Ability to lead critical incident resolution and mentor junior administrators. **Preferred Qualifications** - Certifications: CCNP, CCIE, JNCIP, PCNSE, NSE, CISSP (for security focus). - Experience with cloud networking (AWS, Azure, GCP). - Exposure to SDN (Software Defined Networking) and network virtualization (NSX, ACI). - Knowledge of ITIL processes for incident, problem, and change management. Behavioural Competencies : Proven experience of delivering process efficiencies and improvements Clear and fluent English (both verbal and written) Ability to build and maintain efficient working relationships with remote teams Demonstrate ability to take ownership of and accountability for relevant products and services Ability to plan, prioritize and complete your own work, whilst remaining a team player Willingness to engage with and work in other technologies CGI is an equal opportunity employer. In addition, CGI is committed to providing accommodations for people with disabilities in accordance with provincial legislation. Please let us know if you require a reasonable accommodation due to a disability during any aspect of the recruitment process and we will work with you to address your needs. Life at CGI: It is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons Come join our team, one of the largest IT and business consulting services firms in the world Your future duties and responsibilities **Required Qualifications To Be Successful In This Role** **Together, as owners, let’s turn meaningful insights into action.** Life at CGI is rooted in ownership, teamwork, respect and belonging. H