MIS IT Infrastructure Manager

Lumina Advisory & Global Search; Singapore; On-site; SGD 180,000 - 240,000; Full time

Job summary

Lumina Advisory & Global Search is seeking a senior IT Infrastructure leader to oversee global systems, security, and cross‑platform integration across Windows, macOS and Linux environments, ensuring reliability and regulatory compliance.

You will drive automation, scripting, cloud IAM, zero‑trust policies, and multinational project delivery while balancing hands-on administration with strategic governance in a fast‑moving enterprise.

Qualifications

• Bachelor’s degree or higher in computer science, information management, or related field.
• 8+ years IT/MIS infrastructure experience, with at least 3 years in leadership.
• Proven track record in multinational infrastructure integration.

Responsibilities

• Oversee end-user devices and server environments globally.
• Lead IT integration projects across subsidiaries with governance policies.
• Develop and enforce security policies (RBAC, patching, EDR, DLP).

Skills

Leadership

Automation

Networking

Cloud IAM

Security governance

Education

Bachelor’s degree in CS/IS

Tools

AD/LDAP

SAML

MDM

EDR/DLP

Job description

• Systems Administration & Management: Oversee and maintain end-user devices and server environments across global offices, spanning Windows, macOS, and Linux platforms; standardize provisioning, configuration, routine maintenance, and lifecycle refresh processes.
• IT Automation & Scripting: Hands‑on development of scripts (e.g., Bash, Python, PowerShell) to automate administrative tasks, routine health checks, log aggregation, software deployments, and system orchestration.
• Network Infrastructure Management: Architect and monitor enterprise network infrastructure (LAN/WAN/VPN/SD-WAN and cloud connectivity) for branch offices worldwide, ensuring high availability, security, and low latency.
• Resource Integration & Hybrid Optimisation: Plan and execute IT infrastructure integration (file systems, identity providers, servers); establish seamless interoperability across heterogeneous Windows, macOS, and Linux environments (e.g., AD/LDAP, MDM, SSO, file sharing).
• Cloud & Collaboration Ecosystems: Manage and federate Microsoft 365, Google Workspace, and core cloud environments (Azure / AWS / GCP); implement unified identity and access management (IAM) and zero‑trust policies.
• Global IT Integration: Spearhead multinational subsidiary IT integration projects; establish baseline global IT governance policies compliant with regional regulations and corporate standards.
• Information Security & Endpoint Protection: Implement multi-platform endpoint security policies (RBAC, automated patch management, EDR, and DLP) to detect and mitigate unauthorised access or data leakage.
• Risk Control & Compliance: Enforce security benchmarks aligned with international standards (e.g., ISO 27001, GDPR); coordinate vulnerability assessments, penetration testing, backup/DR drills, and staff security awareness programs.

Qualifications

Education: Bachelor’s degree or above in Computer Science, Information Management, or related technical discipline.

Experience

• Minimum 8 years of IT/MIS infrastructure experience, including at least 3 years in a technical leadership or managerial capacity.
• Proven track record in multinational infrastructure integration and large-scale project execution.
• Hands‑on administration experience in mixed Windows, macOS, and Linux enterprise environments.

Technical Skills

• Linux Proficiency: Deep understanding of Linux distributions (Ubuntu/Debian, RHEL/CentOS), including package management, service configuration, permission models, performance tuning, and troubleshooting.
• Automation & Scripting: Strong hands‑on scripting capability in Bash, Python, and/or PowerShell to build operational tooling and automated workflows from scratch.
• Infrastructure & Security: Solid command of enterprise networking (LAN/WAN/VPN), cloud infrastructure, directory services (AD/LDAP/SAML), firewalls, EDR/DLP, and vulnerability remediation.

Certifications (Preferred)

• Cloud & Systems: Microsoft Certified (Azure Administrator/Architect, M365 Enterprise Administrator), AWS Certified SysOps/Solutions Architect, Apple Certified Support Professional (ACSP).
• Security & Leadership: CISSP / CCNP / PMP.
• Personal Attributes: Strong hands‑on troubleshooting mindset, strategic architecture vision, clear communication skills, and high resilience under pressure.