Senior Network Engineer

Nityo Infotech Limited; Singapore; Hybrid; SGD 90,000 - 130,000; Full time

Job summary

Nityo Infotech Limited is seeking an experienced Network Engineer in Singapore to design, implement, and optimize large-scale enterprise and data center networks. The role emphasizes Cisco routing/switching, security, and hands-on deployment across Nexus 9K and Catalyst 9K platforms.

The ideal candidate has 7+ years in network engineering with strong data center experience, capable of handling L2/L3, VRF, VPC, and security technologies, and will engage directly with customers and technical teams.

Qualifications

• 7+ years of proven Network Engineering experience.
• Strong experience in Cisco Routing & Switching.
• Hands-on experience with Cisco Nexus 9K & Catalyst 9K.
• Strong Data Center & Enterprise Core Network experience.
• Strong knowledge of L2/L3 networking.
• Strong routing knowledge – OSPF, EIGRP & BGP.
• Network security knowledge – IPsec VPN, SSL VPN, AAA, NAT, QoS, 802.1X, SGT/TrustSec.
• Experience with Cisco ASA / Firepower.
• Strong troubleshooting and customer-facing communication skills.
• Enterprise wireless/network security experience.

Responsibilities

• Design and implement High-Level and Low-Level Network Designs (HLD/LLD).
• Deploy and manage Campus and Data Center Networks.
• Configure Cisco Nexus 9K and Catalyst 9K platforms.
• Work on L2/L3, VLAN, VRF, VPC, VTP, and data center zones.
• Configure and troubleshoot routers, switches, firewalls, and network appliances.
• Monitor network performance and resolve complex issues.
• Collaborate with customers and stakeholders.

Skills

Cisco Routing

Cisco Switching

Network Security

Data Center Networking

Enterprise Core Network

L2/L3 Networking

OSPF/EIGRP/BGP

VLAN/VPC

Firewall & VPN

Tools

Cisco Nexus 9K

Cisco Catalyst 9K

Cisco ASA

Firepower

Job description

Work Mode: Hybrid – Minimum 3 days at client premises

Evaluation: Manager Screening (Sankha) → 2 Technical Rounds with WWT

We are looking for an experienced Network Engineer to deliver network planning, design, implementation and optimization solutions for enterprise customers.

The ideal candidate should have strong hands‑on experience across Cisco Enterprise & Data Center networking, including routing, switching, security and network infrastructure deployment.

• Design and implement High-Level & Low-Level Network Designs (HLD/LLD)
• Deploy and manage Campus & Data Center Networks
• Implement Cisco Nexus 9K & Catalyst 9K switching platforms
• Work on L2/L3, VLAN, VRF, VPC, VTP, Spanning Tree & Data Center Zones
• Configure and troubleshoot routers, switches, firewalls and network appliances
• Perform network installation, configuration, upgrades and maintenance
• Monitor network performance and resolve complex network issues
• Implement and troubleshoot enterprise routing and security technologies
• Work closely with customers, technical teams and business stakeholders
• Research and evaluate networking technologies, products and industry standards

• 7+ years of proven Network Engineering experience
• Strong experience in Cisco Routing & Switching
• Hands‑on experience with Cisco Nexus 9K & Catalyst 9K
• Strong Data Center & Enterprise Core Network experience
• Strong knowledge of L2/L3 networking
• Strong routing knowledge – OSPF, EIGRP & BGP
• Network security knowledge – IPsec VPN, SSL VPN, AAA, NAT, QoS, 802.1X, SGT/TrustSec
• Experience with Cisco ASA / Firepower
• Strong troubleshooting and customer‑facing communication skills
• Enterprise wireless/network security experience

We are looking for a technically strong Network Engineer who has experience working on large‑scale enterprise and/or data center environments and can independently handle network design, implementation, troubleshooting and customer interactions.

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