Network Security Analyst

apartmentTele-centre Services Pte Ltd placeGeylang scheduleFull-time calendar_month 

Join our Digital Infrastructure & Cybersecurity team as a Network & Security Specialist, securing and maintaining IT systems across on-premise and cloud (AWS) environments.

Responsibilities and Authorities
  1. Network Administration & Operations:
  • Design, implement, manage, and troubleshoot secure LAN/WAN, SD-WAN, and VPN architectures
  • Configure and maintain routers, switches, firewalls, and wireless systems to ensure availability, reliability, and performance
  • Policy configuration, VPN setup, Web filtering and content inspection
  • Oversee IP addressing, DNS, DHCP, NAT, and VLAN configurations
  • Monitor network traffic and bandwidth usage to identify and resolve bottlenecks or abnormal activity
  • Perform root-cause analysis of network outages and implement corrective actions
  1. IT Security Operations:
  • Implement and manage security controls, including firewalls, IDS/IPS, anti-virus/malware protection, endpoint security, DLP, and mobile device management (MDM)
  • Conduct security monitoring using SIEM tools and respond to real-time security incidents
  • Perform regular vulnerability scans, patch management, and remediation activities
  • Lead or support incident response processes, including threat analysis, containment, eradication, and recovery
  1. Cloud Security (Azure / AWS / Google Cloud): Co-Own the following duties with the Cloud & Infrastructure Specialist. Ensure proper configuration of cloud-native security services such as:
  • Cloud Security Groups, IAM, GuardDuty, Config, CloudTrail, WAF, Defender for Cloud, Azure AD, NSGs, IAM, VPC Firewall & Cloud Security Command Center
  • Implement and monitor logging, alerting, and auditing for cloud-based workloads
  • Manage secure access to cloud resources using conditional access, MFA, role-based access control (RBAC), and zero-trust principles
  • Stay current with evolving cloud security trends, threats, and compliance frameworks
  1. Compliance & Governance:
  • Ensure compliance with regulatory standards such as ISO 27001, Data Protection and ISO23001
  • Maintain up-to-date documentation of network and cloud infrastructure, configurations, security policies, and access controls
  • Participate in audits and support internal and external security assessments
  • Develop and enforce security policies, standards, and best practices for both on-prem and cloud environments
  1. Collaboration & Support:
  • Support and train IT staff and end-users on cybersecurity awareness, phishing prevention, and secure IT practices
  • Provide tier 2/3 support for security incidents, outages, or escalated network issues
  1. Disaster Recovery & Business Continuity
  • Regularly test DR plans and ensure high availability and compliance with organization BCP objectives
  1. Others
  • Performs other duties as may be directed by the Department Manager.
Qualifications
  • Bachelor’s degree in Computer Science, Information Security, Network Engineering, or related field
  • Minimum 3–5 years of experience in network and IT security roles, with at least 1–2 years focused on cloud security
  • Hands-on experience with both on-premise and cloud infrastructures in a mid-to-large scale environment
Certifications (Preferred/Required):
  • Required (any one or more):
  • CompTIA Security+
  • Cisco CCNA Security
  • Microsoft Certified: Azure Security Engineer Associate
  • AWS Certified Security – Specialty
  • Certified Ethical Hacker (CEH)
  • Preferred:
  • CISSP, CISM, CCSP, GSEC
Technical Skils:
  • Proficiency in configuring and securing networking equipment (Cisco, Fortinet, Palo Alto, etc.)
  • Experience with cloud platforms (Azure, AWS), cloud networking, and cloud security services
  • Familiar with SIEM, SOAR, EDR, NAC, and vulnerability scanners
  • Hands-on experiences on authentication protocols and Zero Trust Architecture
Competencies / Skills Requirement
  • Strong analytical and troubleshooting skills
  • High attention to detail and sense of urgency in handling incidents
  • Clear written and verbal communication
  • Ability to work independently and collaborate across departments
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