System Administrator – Infrastructure & Security

Overview

System Administrator – Infrastructure & Security Jobs in Ho Chi Minh City, Vietnam at Seamless Insure

Title: System Administrator – Infrastructure & Security

Company: Seamless Insure

Location: Ho Chi Minh City, Vietnam

About Seamless.insure: 

Seamless.insure is an end-to-end SaaS-based insurance management platform designed to empower underwriters and distributors with efficiency, compliance, and superior customer experiences. Our platform is adaptable, innovative, and crafted to address the complexities of the insurance sector. 

We are seeking a System Administrator – Infrastructure & Security to take a leading role in managing, optimizing, and securing our IT systems and cloud environments. This role combines deep technical knowledge across infrastructure, Microsoft ecosystems, and security operations, with a strong focus on reliability, compliance, and user support. You’ll work closely with cross-functional teams to ensure business continuity and infrastructure excellence

 

Responsibilities

System & Infrastructure Management 

• Administer, monitor, and maintain enterprise-level infrastructure (servers, networks, endpoints). 
• Diagnose, troubleshoot, and resolve hardware, software, and connectivity issues. 
• Design, configure, and maintain Microsoft 365 services, including Entra ID, MFA, Privileged Identity Management, and administrator-level configuration. 
• Manage Active Directory (including inter-forest migrations, upgrades, and AD Connect deployments). 
• Implement automation and configuration management tools to drive operational efficiency. 
• Plan and execute high-availability and disaster recovery solutions. 

SecuritSecurity Operations & Compliance

• Collaborate closely with DevSecOps and Technical Architecture teams to ensure server security controls, vulnerability remediation, and patching activities remain up to date.
• Monitor and manage enterprise Anti-Virus platforms and vulnerability remediation efforts. 
• Administer and maintain SIEM solutions for log collection, threat detection, and incident correlation. 
• Enforce security policies, compliance configurations, and data loss prevention (DLP) controls. 

Office 365 & Cloud Services Administration 

• Oversee Microsoft 365 services including: 

1. Microsoft Intune (device management and endpoint compliance) 
2. Microsoft Entra ID (Azure AD) (identity, SSO, access control, MFA, PIM) 
3. Exchange Online, SharePoint Online, Power Automate, and Microsoft Forms 

• Implement and manage policies related to compliance, email security, and information governance. 
• Support integration and governance across Microsoft workloads, including Entra ID, Intune, Defender, Purview, Exchange Online, SharePoint Online, and Teams. 

Operational Support & Communication 

• Support the secure adoption and governance of AI-enabled productivity tools, including Microsoft Copilot and related Microsoft 365 AI capabilities, by helping define usage policies, access controls, data protection requirements, and user enablement practices. 
• Provide advanced support for infrastructure-related incidents and service requests. 
• Collaborate with end-users and IT support teams to deliver effective IT solutions. 
• Lead root cause analysis, documentation, and follow-up on incidents and outages. 

Governance & Documentation 

• Maintain documentation for infrastructure design, standard operating procedures (SOPs), and change logs. 
• Support internal/external audits by providing system evidence, logs, and reports. 
• Contribute to IT policy development and security awareness efforts. 

Qualifications

Must-Have 

• 3+ years of experience in a system administration or infrastructure operations role. 
• Strong hands-on experience with: 

1. Microsoft platforms (Active Directory, Office 365, Intune, Azure/Entra ID) 
2. Security systems (SIEM, Antivirus, DLP) 

• Basic Linux administration and scripting experience, including Bash and PowerShell. 
• Experience configuring and supporting end-user hardware (desktops, laptops, printers). 
• Knowledge of security tools such as disk encryption, endpoint protection, and local firewalls. 
• Strong communication and documentation skills in English. 
• Practical experience using AI tools to improve IT operations, documentation, troubleshooting, reporting, or user support workflows. 
• Experience working in enterprise or regulated environments. 

Preferred Qualifications 

• Familiarity with AI governance, responsible AI usage, Microsoft Copilot administration, or AI-enabled security and productivity tooling. 
• Experience with IT audit frameworks (e.g., ISO 27001, SOC 2, NIST). 
• Familiarity with automation/configuration tools. 
• Exposure to IAM systems, compliance platforms, and backup solutions. 

Preferred Qualifications

• Microsoft Azure Administrator – AZ-104 
• Cloud certifications related to Azure or Microsoft 365 administration, such as Intune, Entra ID, or SharePoint. 
• SC-300: Microsoft Identity & Access Administrator Associate 
• MD-102: Endpoint Administrator Associate 
• MS-102: Microsoft 365 Administrator (Expert)