Network Engineer (L1)

SAGL Consulting; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

SAGL Consulting seeks an experienced Network Administrator to administer, monitor, and secure enterprise network infrastructure in Singapore. You will ensure high availability, implement security controls, and meet SLAs.

Responsibilities include provisioning routers, switches, firewalls, and VPNs; performing incident response per ITIL; monitoring via NMS; maintaining diagrams and backups; and coordinating with ISPs and vendors for circuit provisioning.

Qualifications

• Diploma in IT or related field.
• CCNA and ITIL Foundation certifications.
• 3+ years of hands-on enterprise network and security infrastructure experience.
• Strong routing and switching, firewall policy administration, and ITSM familiarity.

Responsibilities

• Provision, configure, and manage core networking and security hardware (Routers, Switches, Firewalls, VPNs, proxies, load balancers).
• Execute rapid fault isolation and root-cause analysis per ITIL workflows.
• Monitor network telemetry, patterns, and security events using enterprise NMS.
• Maintain up-to-date topology diagrams, backups, and capacity planning metrics.
• Coordinate vendor escalations and circuit provisioning with ISPs and third parties.

Skills

L2/L3 routing

Firewall policy

Troubleshooting

ITSM platforms

Education

Diploma in Information Technology

CCNA

ITIL Foundation

Tools

NMS

ITSM platforms

Job description

Objective: Administer, monitor, and secure enterprise network infrastructure, ensuring high availability, performance, and strict SLA compliance.

Technical Responsibilities:

• Infrastructure Admin: Provision, configure, and manage core networking and security hardware, including Routers, Switches, Firewalls, IDS/IPS, WLCs, NAC appliances, Load Balancers, VPNs, and Proxies.

• Incident Response: Execute rapid fault isolation and root-cause analysis for network degradation and outages under high-pressure scenarios, strictly adhering to ITIL incident workflows and SLAs.

• Network Operations: Monitor network telemetry, traffic patterns, and security events utilizing enterprise Network Management Systems (NMS).

• Documentation: Maintain up-to-date network topology diagrams, configuration backups, RMA pipelines, and capacity planning metrics.

• Vendor Management: Drive technical escalations and integrations with ISPs, telcos, and third-party vendors for circuit provisioning and hardware onboarding.

Technical Requirements:

• Experience: 3+ years of hands-on operational experience in enterprise network and security infrastructure management.

• Certifications: Active CCNA (or equivalent vendor certification) and ITIL Foundation.

• Education: Diploma in Information Technology or a related technical discipline.

• Core Competencies: Strong L2/L3 routing and switching, firewall policy administration, highly analytical troubleshooting skills, and proficiency with ITSM platforms.