NTT

3 months ago

Cross Technology Managed Services Engineer (L3)

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Last checked: 22 hours agoStatus: Live

Job Summary

Operate and continuously improve Secure Access Service Edge (SASE) services, handling day-to-day ZIA and ZPA operations. Monitor service health and user experience, troubleshoot L2/L3 incidents across authentication, tunnels/connectors, and policy blocks, and administer changes under CAB/ITSM controls. Manage integrations (IdP, SIEM, ticketing, endpoints), maintain forwarding architecture and documentation, and support audit/compliance and exception lifecycles.

Location: Singapore

Workplace: Hybrid

Employment Type: Full time

Job Function: Solutions Engineering & Sales Engineering

Seniority: Mid level

Key Responsibilities

•Run day-to-day operations for ZIA components (web gateway, SSL inspection, URL filtering, cloud app control, sandbox, DLP, DNS security).
•Run day-to-day operations for ZPA components (App Segments, Access Policies, Connector management, posture requirements, policy troubleshooting).
•Monitor service health and user experience; identify trends and recurring issues proactively.
•Perform L2/L3 incident troubleshooting including authentication issues (SSO/SAML), PAC/forwarding issues, tunnel/connector issues, policy blocks, and certificate/SSL inspection issues.
•Maintain and administer policies and forwarding architecture; manage integrations (IdP, SIEM, ticketing, endpoint tools, MFA), support audits/compliance, and maintain runbooks/SOPs.

Key Requirements

•Strong working knowledge of ZIA capabilities such as SSL inspection, URL filtering, CASB/app control, sandbox, and forwarding methods.
•Strong working knowledge of ZPA including connectors, app segments, access policies, posture, and authentication flows.
•Troubleshooting across endpoint, network, and identity (DNS, TLS certificate chains, proxy behavior, SAML/SSO, routing).
•ITSM/change management discipline using ServiceNow or JIRA, with solid documentation habits.
•Nice-to-have: SIEM integration, DLP, and basic scripting for ops automation (PowerShell/Python).

Skills:Incident troubleshootingChange managementDocumentationPolicy governanceVendor management

Tech Stack:Zscaler Internet Access (ZIA)Zscaler Private Access (ZPA)Secure Access Service Edge (SASE)Zscaler Client ConnectorGRE/IPsecPAC filesForwarding profilesSSL inspectionURL filteringCASBSandboxDLPDNS securityApp segmentsAccess policiesPosture requirementsSSOSAMLAzure ADEntra ID

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

Website LinkedIn

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NTT