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Cross Technology Managed Services Engineer (L3)

NTT Ltd.

SingaporeFull-timeOn-site

Posted 24 Jun 2026

About this role

Architect and maintain the enterprise network's defensive architecture to protect infrastructure from sophisticated threats. Act as the highest-tier escalation point for complex security incidents while defining the strategic roadmap for firewalls and Zero Trust models. Requires a Bachelor's degree in IT/Computing and expert-level experience with Cisco or FortiGate firewalls. Candidates should possess advanced certifications such as CCIE or CISSP and have deep technical skills in cloud security and network automation.

What they're looking for

Network Security ArchitectureFirewall ManagementZero Trust ArchitectureCloud Network SecurityIncident ManagementRoot Cause AnalysisSASEMicro-segmentation

Frequently asked questions

What does a Cross Technology Managed Services Engineer (L3) at NTT Ltd. do?

Architect and maintain the enterprise network's defensive architecture to protect infrastructure from sophisticated threats. Act as the highest-tier escalation point for complex security incidents while defining the strategic roadmap for firewalls and Zero Trust models. Requires a Bachelor's degree …

What skills does this Cross Technology Managed Services Engineer (L3) role need?

Key skills for this role include Network Security Architecture, Firewall Management, Zero Trust Architecture, Cloud Network Security, Incident Management, Root Cause Analysis.

How much does a Cross Technology Managed Services Engineer (L3) at NTT Ltd. pay?

The employer did not list a salary for this role. Most similar Singapore roles publish their band on the job page.

Is this Cross Technology Managed Services Engineer (L3) role remote, hybrid, or on-site?

This role is on-site, based in Singapore.

How do I apply for this Cross Technology Managed Services Engineer (L3) role?

You can apply directly on NTT Ltd.'s careers page. ApplyLah can tailor your résumé and cover letter to this exact role in seconds first.