L3 Network engineer- Hyderabad/Mumbai/Ahmedabad

Company: Nipun Net Solutions Pvt Ltd
Location: Palo Alto
Posted on: June 1, 2025

Job Description:

Required Skills:Routing, Switching, Wireless, FirewallsExperience:5+ years of experience in network engineering, with a strong focus on wireless, switching, and firewalls, and at least 2-3 years in L3 role.Qualification:Bachelor's degree in computer science/Btech or equivalent degree.No. of Positions:3Email:kedar.v@nipun.netJob DescriptionThe L3 Network Engineer specializing in Wireless, Switching, and Firewalls is a senior-level professional responsible for designing, implementing, managing, and troubleshooting complex network environments. This role involves working with wireless infrastructure, Layer 2/3 switching, and firewall security systems to ensure a robust and secure network. The L3 Network Engineer 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.
        • Network Monitoring and Maintenance:
          • Implement and maintain network monitoring systems to proactively detect and resolve issues before they impact operations.
          • Perform regular maintenance tasks, such as firmware upgrades, configuration backups, and patch management for network devices.
          • Maintain accurate network documentation, including network diagrams, device configurations, and procedures.
          • Collaboration and Mentorship:
            • Work closely with cross-functional teams (e.g., systems, security, applications) to integrate network solutions and ensure seamless operation.
            • Provide mentorship, training, and guidance to L1 and L2 engineers to help them develop their technical skills and knowledge.
            • Participate in technical workshops, knowledge-sharing sessions, and project planning meetings.
            • Process Improvement and Automation:
              • Identify opportunities to improve network processes and workflows to increase efficiency and reduce manual effort.
              • Develop automation scripts and tools (e.g., Python, Ansible) to streamline network configuration, monitoring, and management tasks.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.
                  • Problem-Solving Skills: Excellent analytical and troubleshooting skills with the ability to resolve complex network issues.
                  • Communication Skills: Strong verbal and written communication skills, with the ability to interact with technical and non-technical stakeholders.
                  • Organizational Skills: Ability to manage multiple tasks, prioritize work, and meet deadlines in a fast-paced environment.Preferred Qualifications:
                    • Experience with cloud networking (AWS, Azure, GCP) and hybrid environments.
                    • Knowledge of network access control (NAC) solutions such as Cisco ISE or Aruba ClearPass.
                    • Familiarity with SD-WAN technologies and implementations.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.
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