Network Engineer (L2)

QUANTUM INFOTECH SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 78,000 - 123,000; Full time

Job summary

QUANTUM INFOTECH SOLUTIONS PTE. LTD. seeks a skilled network engineer to implement and maintain Cisco routers/switches, NAC systems, and wireless networks at client sites. You will work with Cisco IOS, ISE, ClearPass, and firewalls, delivering L2 troubleshooting and 24x7 on-site or remote support as needed.

The role requires CCNP certification, strong OSI/TCPIP knowledge, and experience with monitoring tools and vendor coordination for maintenance and security patches at customer premises.

Qualifications

• Expert level knowledge in implementation and maintenance of Cisco routers and switches.
• Strong knowledge of Cisco IOS.
• Experience with NAC implementations and operations support.
• Experience with Aruba Clear Pass and Cisco ISE.
• Experience with wireless networks, access points and controllers.
• Solid understanding of the OSI/TCP/IP model.
• Hands-on Level-2 troubleshooting and support.
• CCNP certification is required.
• Experience with monitoring, diagnostic tools and packet tracing.
• Familiarity with firewall products (Cisco ASA, FortiGate, Palo Alto, Check Point).
• Knowledge of Aruba ClearPass and Cisco ISE, Cisco wireless controllers.
• Familiarity with F5 load balancers.

Responsibilities

• Work at customer premises with strict workplace security.
• Perform problem resolution, escalation and closure related to routing and switching.
• Carry out configuration change activities.
• Update Service Desk with incident status and ticketing procedures.
• Operate day-to-day Network infra at client sites including performance and bandwidth monitoring.
• Coordinate testing and preventive maintenance with vendors per schedule.
• Perform OS upgrades and patching as required.
• Provide 24x7 standby/onsite support for critical incidents as needed.
• Deliver proactive incident reports within 24 hours for network issues.
• Escalate to vendor support and drive timely resolution.
• Provide multi-vendor support across models and devices.
• Maintain inventory of certificates and update renewals.
• Undertake security hardening and compliance activities per IBM policies.
• Maintain/Update client IBM inventory and compliance databases.
• Keep device software/firmware up to date and monitor vendor End of Life notices.
• Notify client of vulnerabilities and apply patches proactively.

Skills

Cisco routing

Cisco switching

Cisco IOS

NAC implementation

Aruba ClearPass

Cisco ISE

Wireless networks

OSI/TCPIP model

L2 support

CCNP

Network monitoring

Packet Tracer

Network analytics tools

Firewall management (Cisco ASA)

FortiGate

Palo Alto

Check Point

Aruba ClearPass

Cisco ISE

F5 load balancers

Tools

Packet Tracer

Network monitoring tools

Firewall management tools

Aruba ClearPass

Cisco ISE

F5 BIG-IP

Job description

Required Key Skills

• Expert level knowledge in implementation and maintenance of Cisco Routers and Switches of all series.
• Good knowledge in Cisco IOS
• Good knowledge in implementation and operations support of NAC (Network Access Control)
• Good knowledge in Aruba Clear Pass / Cisco ISE
• Good knowledge in Wireless Network / Access Points / Controllers support and troubleshooting
• Expert level understanding of the OSI or TCP/IP model
• Provide Level-2 technical support and troubleshooting to resolve issues
• CCNP certification
• Hands-on experience with monitoring, network diagnostic, Packet Tracers and network analytics tools
• Good knowledge on Firewall Products like Cisco ASA, FortiGate, Palo Alto, Checkpoint
• Good knowledge on Aruba ClearPass/Cisco ISE, Cisco wireless controllers
• Knowledge on F5 load balancers

Priority Tasks

• Workplace is at customer premises and staff has to follow instituted Workplace securities
• Perform Problem resolution, escalation and/or closure of incident including problem analysis and identification of the source of the problem w.r.t Routing and Switching
• Perform configuration change activities
• Provide problem status to the Service Desk and/or update into the ticketing tool according to the Procedures Manual
• Perform day-to-day Network operation for the Network Infra-structure and Network Equipment at the customer premises, including performance monitoring, bandwidth monitoring.
• Work with customer's vendor to perform testing and preventative maintenance according to the schedule provided by the customer for the Network Equipment
• Perform periodic OS upgrade and Patching as and when required.
• 24X5 rotational shift onsite availability and 24X7 standby / remote support availability as and when needed for critical incidents.
• Perform Problem resolution, escalation and/or closure of incident including problem analysis and identification of the source of the problem
• Provide proactive incident reports for all Network related problems, faults, events within TWENTY-FOUR (24) hours
• Respond to all fault calls inclusive of emails and other forms of communications for Firewall related issues and problems reported
• Escalate the problem to Vendors Support in timely manner and get the issue resolved within the specified time as agreed with the customer
• Provide multi-vendor equipment support across a wide range of models and types of networking equipment
• Maintain the inventory of certificates and install/update/renew certificates as and when required.
• Perform security activities like hardening/periodic health check/ ID validation and other compliance activities as per IBM security policies and standards.
• Maintain/Update IBM inventory list and compliance related databases or similar Databases.
• Maintain the device inventory list for the client when needed, Maintain the software/firmware for all the devices up to date
• Subscribe to vendor notifications for the managed devices for vulnerabilities and review/validate/apply security patches pro-actively.
• Perform device activation / deactivation as per IBM service activation and deactivation process.
• Maintain the IP address inventory and allocate new IP address when required by business.
• Engage third part vendors to resolve hardware issues and follow up till closure
• Monitor vendor End of Life / End of Support notifications for all In Scope Devices and inform the client.