Network Engineer

Job Description

This role will be based at client site. Network Engineer is responsible for supporting and maintaining mission-critical Wireless network infrastructure. The role involves troubleshooting, maintenance, incident response, preventive maintenance, implementation activities, vendor coordination, and support for large-scale wireless environments operating in a 24/7 environment.

Job Responsibilities

• Support day-to-day operations of wireless infrastructure including Cisco Wireless solutions, Aruba solutions, switches, firewalls, captive portals, and authentication systems.
• Perform troubleshooting for Wireless connectivity issues, DNS, DHCP, captive portal access, OTP login issues, VLAN routing, authentication failures, and internet access problems.
• Manage service technical escalations and support major incident troubleshooting during service disruptions.
• Support preventive maintenance, firmware upgrades, patching, and technology refresh activities for wireless and network infrastructure.
• Support WLC upgrade activities including Access Point image updates, failover testing, rollback planning, and validation activities.
• Work closely with vendor TAC such as Cisco TAC and Aruba TAC for issue analysis and problem resolution.
• Perform root cause analysis (RCA) and prepare incident reports, technical findings, and preventive recommendations.
• Support implementation activities including Access Point deployment, switch replacement, firewall migration, SSL certificate updates, and network migrations.
• Coordinate with stakeholders, vendors, contractors, and facility management teams during maintenance and implementation activities.
• Support testing activities such as congestion testing, failover testing, WiFi roaming optimization, and POE/network validation.
• Monitor infrastructure health using tools such as Catalyst Center, AirWave, SevOne, LogicMonitor, NetAlly.
• Fluent in ITSM Incident, Change Management, Service Request platforms such as ServiceNow.
• Maintain technical documentation including install plans, diagrams, inventory records, validation evidence, and maintenance reports.
• Support after-office-hour maintenance windows, standby support, and emergency troubleshooting activities.
• Ensure compliance with operational governance, safety requirements, and change management procedures.

Qualifications

• Diploma or Degree in Information Technology, Computer Engineering, Network Engineering, or related field.
• Minimum 3–5 years of hands-on experience in network and wireless infrastructure support.

Strong knowledge of:

• Cisco Wireless LAN Controllers (WLC)
• Aruba Wireless solutions
• Switching and routing technologies
• Firewalls and network security concepts
• DNS, DHCP, VLANs, and authentication systems

Experience with monitoring and management tools such as:

• Cisco Catalyst Center
• AirWave
• SevOne
• ServiceNow
• Familiarity with incident management, RCA preparation, and maintenance support processes.
• Experience supporting enterprise or mission-critical environments is an advantage.
• Good troubleshooting, communication, and stakeholder coordination skills.
• Ability to work independently and support after-hours maintenance activities when required.

Preferred Certifications

• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)
• Aruba Certified Mobility Associate/Professional
• ITIL Foundation Certification

Work Arrangement

• Onsite support role
• May require standby support, shift work, and after-office-hour maintenance activities depending on operational requirements.