Associate Network Engineer (CISCO ACI)

HCLTech; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

HCLTech seeks an experienced network engineer to lead lifecycle management of Cisco Nexus 9000/ACI, DNAC, and ISE in a data center environment. You will manage BAU operations, upgrades, and fault isolation across DC, DR, and remote sites to ensure stable, secure connectivity.

The role requires deep routing/switching skills (OSPF, BGP, VLAN, STP, VTP, HSRP) and hands-on experience with Cisco Nexus 9000, VXLAN, vPC, DNAC, ISE, and security appliances. Strong ITSM and RCA capabilities are essential.

Qualifications

• Bachelor’s degree in IT or related field is required.
• 10 years of experience in network engineering for data center and enterprise settings.
• Strong ITSM process knowledge (Incident, Change, Problem Management).
• Solid grasp of OSI, TCP/IP, LAN/WAN fundamentals.
• Hands-on routing/switching: OSPF, BGP, VLAN, STP, VTP, HSRP.

Responsibilities

• Perform lifecycle management of Cisco APIC and Nexus 9000 (ACI mode), Cisco DNAC and Cisco ISE.
• Manage BAU operations, troubleshooting, and upgrades for routing and switching infra across DC, DR, and remote sites.
• Ensure connectivity and network stability between remote locations and data centers.
• Administer security platforms including Cisco FTD/ASA, Palo Alto, and Check Point firewalls.
• Implement, manage, and upgrade F5 Load Balancers (LTM, GTM, APM).
• Monitor network performance and ensure availability.
• Perform incident management and root cause analysis (RCA).
• Execute change and release activities aligned with ITSM processes.
• Conduct vulnerability assessment and mitigation planning for network and security infra.
• Support system integration and solution deployment.
• Handle stakeholder communication, inventory, and operational duties as needed.

Skills

Network engineering

ITSM processes

Troubleshooting

Root cause analysis

Incident management

Change management

Problem management

Security awareness

Education

Bachelor’s degree in Information Technology or related field

Tools

Nexus 9000 NX-OS

ACI

DNAC

ISE

Catalyst 9000

VXLAN

vPC

F5 LTM/GTM/APM

WLAN 9800 WLC

Cisco FTD/ASA

Palo Alto

Check Point

VPNs

GRE

802.1X

Wireshark

Job description

• Perform lifecycle management of Cisco APIC and Nexus 9000 (ACI mode), Cisco DNAC and Cisco ISE, Cisco Catalyst 9000 series (IOS-XE)
• Manage BAU operations, troubleshooting, and upgrades for routing and switching infrastructure across data center, DR, and remote sites
• Ensure connectivity and network stability between remote locations and data centers
• Administer and support network security platforms including Cisco FTD/ASA, Palo Alto, and Check Point firewalls
• Implement, manage, and upgrade F5 Load Balancers (LTM, GTM, APM)
• Monitor network performance and ensure optimal utilization and availability
• Perform incident management and root cause analysis (RCA)
• Execute change and release activities in alignment with ITSM processes
• Conduct vulnerability assessment and mitigation planning for network and security infrastructure
• Support system integration and solution deployment
• Handle stakeholder communication, inventory, and operational responsibilities as needed

Requirements

• Bachelor’s degree in Information Technology or related field
• 10 years of experience in network engineering (data center and enterprise environments)
• Experience with ITSM processes (Incident, Change, Problem Management)
• Strong knowledge of network fundamentals (OSI, TCP/IP, LAN/WAN concepts)
• Hands-on experience in routing and switching: OSPF, BGP, VLAN, STP, VTP, HSRP
• Experience with Cisco technologies: Nexus 9000 (NX-OS & ACI), VXLAN, vPC, Catalyst 9000, Cisco DNAC, Cisco ISE, Cisco Wireless (9800 WLC)
• Experience with network security solutions: Cisco FTD/ASA, Palo Alto, Check Point
• Strong knowledge of VPNs, GRE, DMZ, and 802.1X
• Hands-on experience with F5 Load Balancing (LTM, GTM, APM)
• Experience using packet analysis tools (e.g., Wireshark)
• Strong troubleshooting and analytical skills