Sr. Network Engineer - Cgpdtm - Delhi

Role: Senior Network Engineer

Responsibilities:

• Design, implement, and manage enterprise LAN/WAN/WLAN, SD-WAN, VPN, and data center networks.
• Configure and troubleshoot routers, switches, firewalls, load balancers, wireless infrastructure, Windows Server, and Linux servers.
• Administer routing and switching protocols including OSPF, BGP, EIGRP, STP, VLANs, VRRP/HSRP, QoS, NAT, ACLs, DNS, DHCP, and IPv4/IPv6.
• Manage network security solutions including firewalls, IDS/IPS, VPN, NAC, network segmentation, and endpoint security.
• Administer Windows Server (2016/2019/2022) and Linux servers (RHEL, Ubuntu, CentOS), including:
• Active Directory (AD DS)
• Group Policy (GPO)
• DNS, DHCP
• File and Print Services
• IIS Web Server
• Windows Failover Clustering
• Hyper-V
• Windows Server Update Services (WSUS)
• PowerShell administration
• User, group, and permission management
• System hardening and patch management
• Administer Linux servers (RHEL, Ubuntu, CentOS), including user management, networking, services, SSH, DNS, DHCP, web servers, package management, and system hardening.
• Configure and manage virtualization platforms including VMware vSphere, Hyper-V, and virtual networking.
• Monitor network, Windows, and Linux server performance; troubleshoot incidents; perform root cause analysis and capacity planning.
• Implement network and infrastructure automation using Python, Bash, PowerShell, and Ansible.
• Support high availability, disaster recovery, backup, replication, and business continuity solutions.
• Prepare network diagrams, technical documentation, SOPs, asset inventory, and change management records.
• Collaborate with security, cloud, and infrastructure teams to ensure secure and reliable IT operations.

Required Skills:

• Enterprise networking (Cisco, Juniper, Arista, or equivalent)
• TCP/IP, OSPF, BGP, MPLS, VLAN, VXLAN, QoS, VPN, DNS, DHCP, IPv4/IPv6
• Firewalls (Fortinet, Palo Alto, Cisco Firepower, Check Point)
• Windows Server Administration (2016/2019/2022)
• Active Directory, Group Policy, DNS, DHCP, IIS, WSUS, Hyper-V, Failover Clustering
• PowerShell scripting and Windows administration
• Linux administration (RHEL, Ubuntu, CentOS), Bash scripting, SSH, system monitoring
• VMware vSphere, Hyper-V, and virtualization technologies
• Network monitoring tools (SolarWinds, PRTG, Zabbix, Nagios)
• SD-WAN, Wi-Fi, IPsec/SSL VPN
• Automation using Python, Bash, PowerShell, and Ansible
• Backup and disaster recovery solutions
• Strong troubleshooting, performance tuning, documentation, and communication skills

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, Electronics & Communication, or a related field.
• 8 - 10 years of experience in enterprise networking, Windows Server administration, and Linux administration.
• Preferred certifications:
• CCNP / CCIE
• RHCSA / RHCE
• Microsoft Certified: Windows Server Hybrid Administrator Associate (or equivalent Microsoft certification)
• JNCIP
• NSE (Fortinet)
• PCNSA/PCNSE (Palo Alto)
• VMware VCP (preferred)
• ITIL Foundation (preferred)