Network Security Specialist

The Adecco Group; Singapore; Sur place; SGD 80 000 - 120 000; Plein temps

Résumé du poste

The Adecco Group in Singapore is seeking an L2 Network Security Production Support professional to safeguard and manage our network security infrastructure. You will handle incidents, changes, and routine service requests, while contributing to vulnerability remediation and hardening efforts.

Your role includes managing firewalls, VPNs, DNS/DHCP, and remote-access solutions, with a focus on operational excellence and ongoing improvements in a global operations context across Asia and other time

Qualifications

• 5+ years of hands-on Network Security support experience in a production/run environment.
• Experience supporting enterprise network-security infrastructure in a production/run environment.
• Financial-services experience would be advantageous.
• Strong troubleshooting, analytical and incident-resolution capabilities.
• Comfortable providing support in a shift/on-call environment.

Responsabilités

• Provide L2 production support for network and security infrastructure.
• Manage security incidents, service requests and changes.
• Investigate and respond to security incidents including phishing, malware and other security events.
• Perform vulnerability remediation and infrastructure hardening.
• Manage and troubleshoot firewalls, IPS/IDS, proxies, VPNs and remote-access solutions.
• Manage DNS and DHCP services.
• Support network-security implementation and enhancement projects.
• Maintain security SOPs, procedures, documentation and knowledge articles.
• Maintain network-security assets and CMDB records.
• Provide technical guidance and escalation support to L1 teams.
• Support security upgrades and continuous operational improvements.

Connaissances

Network Security

Firewalls

Fortinet / FortiGate

Check Point Firewall / MDS

VPN / Remote Access

IDS / IPS

LAN / WAN

DNS / DHCP

Vulnerability Remediation

Network Security Hardening

L2 Production Support

Security Incident Response

Formation

Bachelor’s degree in Computer Science, Information Technology, Computer Studies, Systems Analysis or a related discipline

Outils

Cisco ACI/Nexus/Catalyst

F5 LTM/ASM/APM/TMOS

Infoblox DNS/DHCP

Ivanti Remote Access

Trend Micro IPS/IDS

Arista Switches EOS

Python

Bash

Ansible

Wireshark

TShark

NetFlow

Encryption

Certificates

Description du poste

• Provide L2 production support for network and security infrastructure.
• Manage security incidents, service requests and changes.
• Investigate and respond to security incidents including phishing, malware and other security events.
• Perform vulnerability remediation and infrastructure hardening.
• Manage and troubleshoot firewalls, IPS/IDS, proxies, VPNs and remote-access solutions.
• Manage DNS and DHCP services.
• Support network-security implementation and enhancement projects.
• Maintain security SOPs, procedures, documentation and knowledge articles.
• Maintain network-security assets and CMDB records.
• Provide technical guidance and escalation support to L1 teams.
• Support security upgrades and continuous operational improvements.

Key Technical Skills

Must-have / high priority

• Network Security
• Firewalls
• Fortinet / FortiGate
• Check Point Firewall / MDS
• VPN / Remote Access
• IDS / IPS
• LAN / WAN
• DNS / DHCP
• Vulnerability Remediation
• Network Security Hardening
• L2 Production Support

Strongly preferred technologies

• Cisco: ACI, Nexus, Catalyst, DNAC, ISE, IOS, NX-OS
• F5: LTM, ASM, APM, TMOS
• Infoblox: DNS / DHCP
• Ivanti: Remote Access
• Trend Micro: IPS / IDS
• Arista: Switches / EOS

Additional technical skills

• Python
• Bash
• Ansible
• Wireshark
• TShark
• NetFlow
• Encryption
• Certificates

Experience

• Ideally 5+ years of hands‑on Network Security support experience.
• Experience supporting enterprise network‑security infrastructure in a production/RUN environment.
• Financial‑services experience would be advantageous based on the original requirement you provided.
• Strong troubleshooting, analytical and incident‑resolution capabilities.
• Comfortable providing support in a shift/on‑call environment.

Education

Bachelor’s degree in Computer Science, Information Technology, Computer Studies, Systems Analysis or a related discipline.

Work Arrangement

This role supports global operations across Asia, Paris and New York time zones and therefore requires flexibility to work across the following Singapore‑time shifts:

• 2:00 PM – 11:00 PM
• 4:00 PM – 1:00 AM during summer season
• 3:00 PM – 12:00 AM
• 5:00 PM – 2:00 AM during winter season