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Urgent! Senior Network Engineer – Infrastructure, Security Job Opening In Geylang – Now Hiring Henderson Security Services Pte Ltd

Senior Network Engineer – Infrastructure, Security



Job description

Job Summary:

We are seeking a seasoned Senior Network Engineer with extensive experience in designing, implementing, and maintaining mission-critical network infrastructure across hybrid environments.

The ideal candidate will have deep technical expertise in enterprise routing and switching, network security, cloud-based networking (AWS/Azure/GCP), automation (Ansible, Python), and next-generation firewalling.

This role demands a proactive and strategic thinker capable of delivering low-latency, high-availability network solutions while ensuring scalability and compliance with global security standards.

Responsibilities:

  • Architect and implement highly available, scalable, and secure Layer 2/3 network solutions across multiple data centers, branch locations, and cloud environments.

  • Lead the migration of on-prem infrastructure to cloud-native networking architectures (e.g., AWS VPC, Transit Gateway, Azure VNets, etc.).

  • Design and optimize BGP/OSPF/MPLS/EVPN-based topologies for multi-homed ISP connectivity, WAN edge, and internal traffic engineering.

  • Provide Tier 3/4 level escalation support for complex networking incidents involving switching loops, asymmetric routing, DNS failures, etc.

  • Analyze pcap dumps, NetFlow, SNMP, and syslogs to perform deep-dive root cause analysis.

  • Perform regular network performance assessments and latency optimization across global circuits.

  • Design and enforce zero-trust network access (ZTNA) and microsegmentation policies using tools like Cisco ISE, Palo Alto, or Fortinet.

  • Collaborate with SecOps to implement network access controls, IDS/IPS, VPNs, and Next-Gen Firewalls.

  • Maintain compliance with regulatory standards such as ISO 27001, PCI-DSS, SOX, and HIPAA, including network audit preparation and documentation.

  • Automate network provisioning and configuration using Ansible, Python (Netmiko/NAPALM), or Terraform.

  • Integrate network telemetry with monitoring systems (e.g., SolarWinds, Zabbix, Prometheus, Grafana) for proactive alerting and capacity planning.

  • Develop custom scripts and playbooks to streamline repetitive tasks and enforce configuration compliance.

  • Work closely with cross-functional teams including CloudOps, DevOps, Security, and Application teams to ensure seamless connectivity.

  • Contribute to the development of network engineering standards, runbooks, and architectural documentation.

Requirements:

  • Bachelor's or Master's degree in Computer Science, Information Systems or related field.

  • At least 12 years of hands-on experience in enterprise or service provider networking.

  • Expert-level knowledge of:
  • Routing protocols (OSPF, BGP, EIGRP)
  • Switching technologies (VLANs, STP, VTP, VXLAN, LACP)
  • Security appliances (Palo Alto, Cisco ASA/Firepower, FortiGate)
  • Load balancers (F5, Citrix ADC, HAProxy)
  • Cloud networking (AWS VPCs, Azure NSGs, Direct Connect, ExpressRoute)
  • High-availability and failover configurations (VRRP, HSRP, GLBP)
  • Strong understanding of cybersecurity principles, including encryption, identity & access management (IAM), VPNs, SIEM/SOAR, and secure tunneling protocols.

  • Experience with IPAM/DHCP/DNS solutions like Infoblox.

  • Strong familiarity with IPv6, NAT64/DNS64, and dual-stack configurations.

  • Experience with SD-WAN solutions Cisco Viptela, Silver Peak, Fortinet SD-WAN.

  • Familiarity with Kubernetes networking (CNI plugins, service mesh).

  • Experience in regulated industries (finance, healthcare, telecom).

  • Working knowledge of SASE, NaaS, and emerging network paradigms.

  • Willingness to work in a rotational shift model, including nights, weekends, and holidays, if required for global support.


Required Skill Profession

Other General



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