Senior Network Engineer

KRYJAS PRIVATE LIMITED; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

KRYJAS PRIVATE LIMITED is seeking an experienced Senior Network Engineer to design, implement and optimize WAN/LAN/Wi‑Fi across regional data centres. You will monitor performance, troubleshoot incidents, and work with regional teams to deploy new solutions across sites.

Responsibilities include configuring security, VPNs, firewalls, and load balancers, plus ensuring documentation and capacity planning align with regulatory and security requirements.

Qualifications

• Expertise in IP networking protocols and related technologies (BGP, EIGRP, OSPF, MPLS).
• Proficient with firewall, VPN, IDS/IPS and load balancers; strong security posture.
• Experience with data centre architectures and cloud connectivity; good automation skills.

Responsibilities

• Administer, monitor, and optimize WAN, LAN, and Wi-Fi for maximum availability.
• Troubleshoot complex incidents (latency, DNS, firewall, VPN).
• Configure backups, maintain network documentation, and design solutions with regional teams.
• Collaborate with regional teams on new technical implementations.
• Operate security measures and enforce access policies across networks.

Skills

BGP/EIGRP/OSPF

MPLS/VLANs/IPsec/TCP-IP

Firewall/VPN/IDS-IPS/Load balancer

Network security concepts

Network monitoring tools

Data centre architecture

Cloud networking

Network automation

Python/Ansible/Terraform

Capacity planning

Zero Trust/Security best practices

Documentation practices

Tools

SolarWinds

NetScout

Wireshark

F5 BIG-IP

AVI Load Balancer

DNS/DHCP/NTP/IPAM

Job description

Roles & Responsibilities

• Administer, Monitor, maintain and optimize WAN, LAN, Wi-Fi networks for optimal performance and maximum availability.
• Troubleshoot complex incidents (latency, packet drops, DNS issues, firewall policies, VPN instability).
• Perform WAN/LAN/Wi-Fi/Firewall/Load balancer configuration, backups and regular network documentation updates.
• Collaborate with regional team on the design and implementation of new technical solutions.
• Troubleshoot and optimize WAN circuits with upstream provider.
• Manage and coordinate the administration of several systems
• Visit to sites and regional Data Centres carry on the tasks as required
• Assist with security and third-party software installations.
• Communicate and liaise with all company departments; notify appropriate parties immediately of any issues which may affect efficient operations including, but not limited to, outages, service disruptions and network bottlenecks.
• Maximizes network performance by monitoring performance; troubleshooting network problems and outages; scheduling upgrades; collaborating with network architects for network optimization.
• Secure network system by establishing and enforcing policies; defining and monitoring access.
• Take an automated data driven approach to diagnosing and solving complex network infrastructure issues
• Leverage on automation skills and take a "dev ops" approach to improve efficiency of solving complex network infrastructure issues, network management.
• Capacity Planning: Perform ongoing network performance monitoring and capacity planning to handle current and future data demands.
• Security Compliance: Collaborate with security teams to ensure networks are designed and implemented with security best practices, regulatory compliance (e.g., GDPR, HIPAA) and threat mitigation in mind.
• Documentation and Standards: Develop and maintain documentation for network architecture, including diagrams, configuration guides and operational procedures.
• Cross-Department Collaboration: Partner with application, cloud and infrastructure teams to optimize overall system performance and deliver integrated solutions.
• Troubleshooting: Support for diagnosing, troubleshooting and resolving complex network issues, ensuring business continuity.

Technical Requirements

• Networking Protocols: Expertise in IP networking protocols (e.g., BGP, EIGRP, OSPF, MPLS, VLANs, IPsec, TCP/IP, QoS) and related technologies.
• Network Security Technologies: Proficient in network security technologies like firewalls, VPNs, IDS/IPS, Load-balancers: F5 BIG-IP / AVI LB, Web proxy's; DDI Enterprise - DNS, DHCP, NTP, IPAM
• Security: Understanding of Network Segmentation in DMZ/ Perimeter networks, Zero Trust concepts, Cloud based DDOS/WAF capabilities.
• Network Monitoring: Familiarity with network monitoring tools (e.g., SolarWinds, NetScout, Wireshark) for performance and anomaly detection.
• Data Centre Architecture: In-depth understanding of data centre networking (e.g., spine-leaf, fabric architectures) and cloud connectivity.
• Cloud Networking: Good to have exposure, with basic understanding on various cloud-to-on-prem deployments like hybrid connectivity (VPN/Direct-Connect/Express-route)
• Network Automation: Knowledge of network automation tools (e.g., Ansible, Python scripting, Terraform) to automate configuration, deployment and management processes.

Job Requirements

• Experience: 8-12 years of experience in networking in domains such as data networks, security, FW, Proxy, LB, Voice, etc.,
• Demonstrated ability to lead cross-functional teams and communicate complex technical concepts to both technical and non-technical stakeholders.
• Proven track record of innovative problem-solving and ability to troubleshoot complex network systems.
• CCNA / CCNP or related professional certification is preferred.
• Firewall vendor certification (Fortinet NSE / Palo / Check Point) is good to have.