L3 Network engineer

Role Overview: The L3 Network Engineer specializing in Wireless, Switching, and Firewalls is a senior-level professional responsible for designing, implementing, managing, and troubleshooting complex network environments. Your role involves working with wireless infrastructure, Layer 2/3 switching, and firewall security systems to ensure a robust and secure network. You will provide advanced technical support, mentor junior staff, and collaborate with various teams to deliver high-quality network solutions. Key Responsibilities: - Network Design and Implementation: - Design, deploy, and manage wireless network solutions, including access points, controllers, and wireless LAN controllers (WLCs) to provide optimal coverage and performance. - Configure and maintain Layer 2/3 network switching environments, including VLANs, STP, VTP, HSRP/VRRP, VSS, and port channel configurations. - Implement and manage firewall solutions from vendors like Cisco, Palo Alto, Fortinet, and Check Point, including configuring access control lists (ACLs), NAT, VPNs, and intrusion prevention systems (IPS). - Advanced Troubleshooting and Support: - Act as an escalation point for L1 and L2 network support teams, providing advanced troubleshooting for wireless, switching, and firewall-related issues. - Diagnose and resolve complex network issues such as connectivity problems, packet loss, latency, and security incidents. - Use network monitoring tools and packet analyzers (e.g., Wireshark, SolarWinds, Cisco DNA Center) to identify and address performance bottlenecks and failures. - Wireless Network Optimization: - Conduct site surveys using tools like Ekahau or AirMagnet to design and optimize wireless coverage, capacity, and performance. - Troubleshoot RF-related issues, such as interference, channel overlap, and signal degradation. - Configure and optimize wireless security protocols, including WPA3, 802.1X, RADIUS, and EAP. - Network Security and Compliance: - Configure and manage firewall rules, VPNs, and security policies to protect network resources and ensure compliance with security standards. - Perform regular security assessments, vulnerability scans, and audits to identify and mitigate security risks. - Respond to and resolve network security incidents, including DDoS attacks, malware outbreaks, and unauthorized access attempts. Qualifications and Skills: - Certifications: Relevant certifications such as CCNP Wireless, CCNP Enterprise, CCNP Security, CWNA/CWSP, PCNSE, or equivalent are highly desirable. - Technical Skills: - In-depth knowledge of wireless networking standards (802.11a/b/g/n/ac/ax), WLAN design, and RF optimization. - Expertise in Layer 2/3 switching technologies, including VLANs, STP, LACP, HSRP/VRRP, and VSS/VPC. - Proficiency in configuring and managing firewalls (e.g., Cisco ASA/Firepower, Palo Alto, Fortinet, Check Point) and security features like IPS/IDS, NAT, and VPN. - Experience with network monitoring and analysis tools (e.g., Cisco Prime, DNA Center, Wireshark, SolarWinds). - Knowledge of scripting and automation (Python, Ansible) is a plus. Additional Details of the Company: - Working Conditions: - Office environment with potential for remote work. - May require occasional travel to client sites, data centers, or for training purposes. - On-call availability and occasional after-hours work for network maintenance or emergencies. Role Overview: The L3 Network Engineer specializing in Wireless, Switching, and Firewalls is a senior-level professional responsible for designing, implementing, managing, and troubleshooting complex network environments. Your role involves working with wireless infrastructure, Layer 2/3 switching, and firewall security systems to ensure a robust and secure network. You will provide advanced technical support, mentor junior staff, and collaborate with various teams to deliver high-quality network solutions. Key Responsibilities: - Network Design and Implementation: - Design, deploy, and manage wireless network solutions, including access points, controllers, and wireless LAN controllers (WLCs) to provide optimal coverage and performance. - Configure and maintain Layer 2/3 network switching environments, including VLANs, STP, VTP, HSRP/VRRP, VSS, and port channel configurations. - Implement and manage firewall solutions from vendors like Cisco, Palo Alto, Fortinet, and Check Point, including configuring access control lists (ACLs), NAT, VPNs, and intrusion prevention systems (IPS). - Advanced Troubleshooting and Support: - Act as an escalation point for L1 and L2 network support teams, providing advanced troubleshooting for wireless, switching, and firewall-related issues. - Diagnose and resolve complex network issues such as connectivity problems, packet loss, latency, and security incidents. - Use network monitoring tools and packet analyzers (e.g., Wireshark, SolarWinds, Cisco DNA Center) to identify and addres