IT Infrastructure Administrator

We're Hiring: IT Infrastructure Administrator
Location: HCM, Vietnam
Department: Corporate IT
Level: Specialist
Reports to: IT Operations Lead
About the Role
We are looking for an IT Infrastructure Administrator to take ownership of our group-wide corporate infrastructure, with a strong focus on:
Identity & Access Management
Cloud Infrastructure
Enterprise SaaS
Security Operations
Infrastructure Automation
This is a hands-on individual contributor role for someone with strong technical ownership, security awareness, and the ability to collaborate across international teams.
Key Responsibilities
Administer and optimize Identity Providers such as Okta and Microsoft Entra ID
Manage SSO, MFA, OAuth 2.0, SAML, Conditional Access, and identity lifecycle
Administer corporate cloud environments and related IAM, networking, VPN, and security configurations
Manage and maintain Aruba network infrastructure and related network environments
Implement and manage Cloudflare solutions, including Zero Trust / ZTNA and secure network access
Administer ManageEngine solutions for endpoint, device, system, or IT operations management
Manage corporate DNS, domains, network policies, and internal connectivity
Administer enterprise applications including Google Workspace, Slack, Jira, and Confluence
Manage endpoint management and security solutions such as Intune/Jamf and EDR platforms
Support security monitoring, incident investigation, audit readiness, and compliance
Implement Infrastructure as Code and automation using Terraform, Ansible, Python, Bash, or PowerShell
Improve infrastructure reliability, security, scalability, and operational efficiency
Requirements
5+ years of experience in System Administration, IT Infrastructure, Network Administration, or Cloud Operations
Hands-on experience working with ManageEngine
Hands-on experience with Aruba network infrastructure
Hands-on experience with Cloudflare, particularly Cloudflare Zero Trust / ZTNA
Strong experience with Identity & Access Management, particularly Okta or Microsoft Entra ID
Good understanding of SSO, MFA, OAuth 2.0, SAML, Conditional Access, and identity lifecycle management
Hands-on experience with AWS or Azure core services
Solid understanding of TCP/IP, DNS, VPN, network security, and Zero Trust concepts
Experience with endpoint management / UEM and EDR platforms
Proficiency in at least one scripting language: Python, Bash, or PowerShell
Experience with Terraform, Ansible, or similar infrastructure automation tools
Familiarity with ISO 27001, NIST CSF, security hardening, and audit readiness
Strong English communication skills
Strong troubleshooting, root-cause analysis, and problem-solving skills
High ownership, accountability, and security-first mindset