Senior Network Engineer (L3)

NTT
Singapore
Workplace: OnsiteFull timeFunction: Solutions Engineering & Sales EngineeringEducation: bachelorsSkills: ["Client service orientation","Communication","Work well under pressure","Change management","Active listening"]

Provide L3/L4 network security managed services by acting as the highest-tier escalation point for complex security incidents, performing root-cause analysis, and restoring client services within SLA. Architect and maintain defensive network security, including firewalls, IDS/IPS, NAC, WAF, and Zero Trust/SASE roadmaps. Design secure cloud network patterns, support disaster recovery, drive automation, mentor engineers, and document high- and low-level designs.

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FursaFursa
NTT
NTT
1 month ago

Senior Network Engineer (L3)

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Source: Company careers pageValidated by: Fursa AI
Last checked: 3 hours agoStatus: Live

Job Summary

Provide L3/L4 network security managed services by acting as the highest-tier escalation point for complex security incidents, performing root-cause analysis, and restoring client services within SLA. Architect and maintain defensive network security, including firewalls, IDS/IPS, NAC, WAF, and Zero Trust/SASE roadmaps. Design secure cloud network patterns, support disaster recovery, drive automation, mentor engineers, and document high- and low-level designs.
Location: Singapore
Workplace: Onsite
Employment Type: Full time
Job Function: Solutions Engineering & Sales Engineering
Seniority: Mid level

Key Responsibilities

  • •Define and lead network security strategy and roadmap across on-premise, cloud, and hybrid environments.
  • •Serve as the highest-tier escalation point for complex network security incidents, driving resolution and preventative actions.
  • •Design, deploy, and manage core network security components such as NGFW, IDS/IPS, load balancers, VPN concentrators, and NAC systems.
  • •Establish and enforce security policies, standards, and baselines across network devices and segmentation zones.
  • •Mentor junior engineers, create HLD/LLD documentation, maintain ticket updates, and contribute automation to optimize routine tasks.

Key Requirements

  • •Bachelor’s degree (or equivalent IT/Computing qualification) or demonstrated equivalent work experience.
  • •Certifications relevant to the managed services, including strong network/security vendor certifications (e.g., Fortinet, RSA, Tenable, Trend Micro, F5).
  • •Expert-level management of Cisco or FortiGate firewalls and deep technical skills across relevant network/security domains.
  • •Experience with Zero Trust Architecture (ZTA) / SASE and segmentation (micro-segmentation, VLANs, VRFs).
  • •Basic scripting skills in Python and experience using Ansible for security configuration.
Education:Bachelor's
Skills:Client service orientationCommunicationWork well under pressureChange managementActive listening
Certifications:FortinetRSATenableTrend MicroF5CCIECCNPPCNSECISSPCiscoFortiGate
Tech Stack:FortinetRSATenableTrend MicroF5CiscoFortiGateZero Trust Architecture (ZTA)SASEVLANsVRFsAWSAzureGCPVPCSecurity GroupsNSGsCisco ISENACIDS/IPS

Company Brief

NTT
Dimension Data, operating under NTT Ltd, provides managed IT services, cloud and data center solutions, networking, cybersecurity, and digital transformation services to enterprise customers worldwide.
Industry: Professional Services
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Established Company
Valuation: Public Company (Market Cap in USD)
Headquarters: London, United Kingdom
Founded: 1983
WebsiteLinkedIn