Senior Network Systems Engineer

Job Description & Requirements

Job Description

Design, implement, administer, and provide operational support for network and data centre infrastructure.

Perform network configuration, troubleshooting, maintenance, and optimisation to ensure high availability and performance.

Manage and support network infrastructure including Cisco/Aruba network devices and Cisco ACI.

Configure and troubleshoot routing and network technologies including TCP/IP, IPsec, VRRP, HSRP, SNMP, NAT, Multicast, Subnetting, Ethernet, and Access Control Lists.

Manage and troubleshoot routing protocols including BGP, OSPF, EIGRP, IS-IS, and MPLS.

Administer and support network security infrastructure including firewalls, VPNs, authentication servers, and other security devices.

Perform administration and support of network security platforms such as Check Point, Cisco Firepower, Fortinet, and Palo Alto.

Monitor network performance, availability, capacity, and health proactively, and implement corrective actions to maintain service levels.

Perform network and infrastructure changes in accordance with approved change management procedures.

Plan and execute hardware, firmware, and software upgrades, security patches, and infrastructure refresh activities.

Perform backup and recovery activities, including high availability and failover configuration, to meet required RTO and RPO.

Participate in Disaster Recovery (DR) and Business Continuity Plan (BCP) activities, including testing, failover, and recovery exercises.

Provide 24x7 operations support, including scheduled on-call and after-hours emergency support when required.

Investigate and troubleshoot incidents within the required response timeframe and work towards timely resolution and root-cause identification.

Maintain accurate technical documentation, network diagrams, configuration records, operational procedures, and system manuals.

Manage network-related projects, including infrastructure upgrades, new deployments, migrations, and technology refreshes.

Work closely with internal teams, customers, vendors, and contractors to resolve technical issues and deliver infrastructure projects.

Manage vendors and contractors to ensure project implementation meets technical requirements, agreed timelines, and service levels.

Review infrastructure requirements, technical solutions, risks, migration plans, and capacity requirements for new projects.

Support RFQ/RFP preparation by providing technical specifications, architecture information, and network requirements.

Identify opportunities to improve network monitoring, operational processes, automation, and overall infrastructure efficiency.

Requirements

Diploma/Degree in Information Technology, Computer Science, Engineering, or a related discipline.

Minimum 5 years of relevant experience in network engineering, network administration, infrastructure support, or data centre environment.

Strong hands-on experience supporting and maintaining Cisco/Aruba network devices and/or Cisco ACI.

Strong knowledge of network technologies including TCP/IP, IPsec, VRRP, HSRP, SNMP, NAT, Multicast, Subnetting, Ethernet, and Access Control Lists.

Good working knowledge of routing protocols including BGP, OSPF, EIGRP, IS-IS, and MPLS.

Hands-on experience with network security devices such as Check Point, Cisco Firepower, Fortinet, or Palo Alto firewalls.

Experience with VPN, authentication servers, DNS, proxy, F5 Load Balancers, Infoblox, and network management platforms will be advantageous.

Experience in network monitoring, performance management, capacity planning, and availability management.

Good knowledge of backup/recovery, High Availability (HA), Disaster Recovery (DR), and Business Continuity Planning (BCP).

Experience managing network-related projects and vendors, including RFQ/RFP preparation, implementation, and project coordination.

Strong troubleshooting, analytical, and problem-solving skills.

Good understanding of ITIL and change management processes.

Strong communication, interpersonal, and stakeholder management skills.

Meticulous, proactive, self-motivated, and able to work independently under pressure.

Willingness to participate in 24x7 on-call support and after-hours emergency support when required.

Relevant certifications such as CCNP or higher are preferred. CCIE, CDCP, CISSP, or ITIL certifications will be advantageous.

Candidates with less than 5 years of relevant experience will not be considered.

Working Hours:

9:00am to 6:00pm (Mondays to Fridays)

24x7 on-call support may be required based on operational requirements.