Cross Technology Managed Services Engineer (L3) at NTT Ltd.

Role Overview

• The Cross Technology Managed Services Engineer (L3) is a senior technical specialist responsible for delivering operational excellence across multiple technology domains within managed services environments. The role requires a strong foundation in core infrastructure technologies, including operating systems, Active Directory, identity and messaging services, with primary expertise in public cloud platforms, cloud networking, and cloud security.
• This position provides advanced technical support, complex incident resolution, proactive service optimisation, and technical leadership across hybrid and multi-cloud customer environments. The engineer acts as an escalation point for lower-tier engineers and contributes to the design, automation, and continuous improvement of managed services operations.

Key Responsibilities
Public Cloud Operations

• Manage, maintain, and optimise Azure, AWS and/or GCP environments.
• Support cloud-native networking, identity, security, and governance services.
• Implement and maintain cloud security controls, policies, and best practices.
• Monitor cloud platform performance, availability, and cost optimisation initiatives.
• Support cloud migration, modernisation, and transformation projects.

Cloud Networking & Security

• Administer and troubleshoot:
• Virtual Networks (VNETs)
• AWS VPCs
• Routing and segmentation
• VPN connectivity
• ExpressRoute / Direct Connect
• Load balancing
• DNS services
• Firewalls and security appliances
• Implement and manage:
• Zero Trust principles
• Network Security Groups
• Web Application Firewalls
• Cloud security services
• Identity-based access controls

Service Operations

• Act as L3 escalation point for critical incidents and complex technical issues.
• Lead root cause analysis and problem management activities.
• Deliver proactive maintenance and service improvement initiatives.
• Develop automation and standardisation opportunities.
• Produce and maintain technical documentation and operational procedures.

Customer Engagement

• Provide technical guidance to clients and internal teams.
• Participate in service reviews and technical governance discussions.
• Support project teams during implementations and transitions into support.
• Contribute technical expertise during solution planning and design discussions.

Required Technical Skills

• Public Cloud
• Microsoft Azure (preferred) SC700
• Amazon Web Services (advantageous)

Cloud Networking

• VNET / VPC Design
• Routing and Switching
• VPN Technologies
• SD-WAN
• ExpressRoute / Direct Connect
• DNS and Load Balancing
• Cloud Firewalls

Cloud Security

• Microsoft Defender Suite
• Microsoft Sentinel
• Security Center / Defender for Cloud
• IAM and RBAC
• Conditional Access
• Zero Trust Architecture
• Security Monitoring and Compliance

Infrastructure

• Windows Server
• Linux Administration
• PowerShell
• Infrastructure Automation

Experience Requirements

• 5+ years experience in managed services or enterprise infrastructure environments.
• Demonstrated experience supporting public cloud platforms in production environments.
• Strong experience in cloud networking and security technologies.
• Experience with Microsoft identity and messaging platforms.
• Proven ability to lead technical troubleshooting and major incident resolution.

Preferred Certifications

• Microsoft
• AZ-104 Microsoft Azure Administrator
• AZ-305 Azure Solutions Architect Expert
• AZ-700 Azure Network Engineer Associate
• AZ-500 Azure Security Engineer Associate
• SC-100 Cybersecurity Architect Expert (advantageous)