Designs, implements, maintains, and supports enterprise LAN, WAN, WLAN, data center, routing, switching, telephony, and load-balancing infrastructure. Administers Cisco and Huawei networks, Cisco CUCM, SIP and voice gateways, and F5 BIG-IP load balancers. Provides Level 2/3 support, monitors performance, troubleshoots incidents, performs capacity planning and upgrades, maintains documentation, and participates in change, problem, and on-call activities.
Job Description: Senior Network Engineer (5-8 Years Experience)
Position Title
Senior Network Engineer
Location
Singapore
Employment Type
Full-Time
Job Summary
We are seeking a highly skilled Senior Network Engineer with 5 to 8 years of experience in enterprise network infrastructure design, implementation, and support. The ideal candidate will possess strong expertise in Cisco and Huawei networking technologies, Cisco Unified Communications Manager (CUCM), F5 Load Balancers, and enterprise-grade routing and switching environments. The candidate will play a key role in maintaining network availability, performance optimization, troubleshooting, and driving infrastructure improvement initiatives.
Key Responsibilities
Network Infrastructure Management
- Design, implement, maintain, and support enterprise LAN, WAN, WLAN, and Data Center networks.
- Configure and troubleshoot Cisco and Huawei network devices, including routers, switches, and wireless infrastructure.
- Monitor network performance and ensure high availability and reliability of network services.
- Perform network capacity planning, upgrades, and technology refresh activities.
Routing & Switching
- Configure and manage Layer 2 and Layer 3 network services.
- Implement and troubleshoot routing protocols such as:
- OSPF
- BGP
- EIGRP
- Static Routing
- Configure VLANs, STP, EtherChannel, HSRP/VRRP, and network redundancy solutions.
- Conduct root cause analysis for network incidents and performance issues.
Cisco Unified Communications (CUCM)
- Administer and support Cisco Unified Communications Manager (CUCM).
- Manage IP Telephony infrastructure, SIP trunks, voice gateways, and call routing.
- Troubleshoot voice quality issues, call failures, and telephony-related incidents.
- Support integrations with collaboration and communication platforms.
F5 Load Balancer Administration
- Configure and manage F5 BIG-IP Load Balancers.
- Create and maintain Virtual Servers, Pools, Health Monitors, and SSL profiles.
- Troubleshoot application delivery and load balancing issues.
- Implement high availability and traffic optimization solutions.
Operations & Support
- Provide Level 2/Level 3 support for network and voice infrastructure.
- Participate in incident management, problem management, and change management processes.
- Create and maintain network documentation, diagrams, and operational procedures.
- Work closely with security, infrastructure, and application teams to ensure seamless service delivery.
- Participate in on-call support and maintenance activities as required.
Required Qualifications
- Bachelor's Degree in Computer Science, Information Technology, Telecommunications, or related field.
- 5 to 8 years of hands-on experience in enterprise network engineering.
- Strong experience with:
- Cisco Routing and Switching
- Huawei Campus and DC Routing and Switching
- Cisco Unified Communications Manager (CUCM)
- F5 BIG-IP Load Balancers
- Extensive knowledge of TCP/IP, DNS, DHCP, NAT, VPN, and QoS.
- Experience with network monitoring and troubleshooting tools.
- Strong analytical and problem-solving skills.
- Excellent communication and stakeholder management abilities.
Preferred Certifications
One or more of the following certifications are highly desirable:
- Cisco CCNP Enterprise
- Cisco CCNA
- CCNP Collaboration
- Huawei HCIP / HCIE
- F5 Certified BIG-IP Administrator (F5-CA)
- ITIL Foundation
Technical Skills
Networking
- Cisco Catalyst, Nexus, ISR, ASR
- Huawei Campus and DC Cloud Engine Switches
- Routing Protocols: OSPF, BGP, EIGRP
- VLAN, STP, VTP, HSRP, VRRP
- MPLS, VPN, QoS
Voice & Collaboration
- Cisco CUCM
- SIP
- Voice Gateways
- Cisco IP Phones
- UCCX (Preferred)
Load Balancing
- F5 BIG-IP LTM
- SSL Offloading
- Traffic Management
- High Availability Configuration
Monitoring & Tools
- SolarWinds
- PRTG
- Wireshark
- Cisco DNAC
- Network Performance Monitoring Tools
Key Competencies
- Network Troubleshooting
- Technical Leadership
- Incident & Problem Management
- Infrastructure Design
- Customer Focus
- Stakeholder Management
- Documentation & Reporting
- Team Collaboration
Nice-to-Have
- Experience in large enterprise or data center environments.
- Knowledge of network security technologies such as Firewalls, NAC, Cisco ISE.
- Experience with cloud networking ( AWS).
- Exposure to network automation tools such as Python, Ansible, or Cisco DNA Center.
Experience Required: 5-8 Years
Seniority Level: Senior Engineer / Senior Network Engineer
RHB Banking Group Singapore, Singapore, SGP Office
Singapore, Singapore
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