Mid/Sr System Administrator - Infrastructure, Security

About [protected info]

[protected info] 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 Senior 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.

Key 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 Office 365 (Microsoft 365 Administrator (Expert), Designs Entra ID, MFA, PIM)
• 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.

Security Operations & Compliance

• Collaborate with DevSecOps and TA teams to ensure secure server configurations.
• 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:
• Microsoft Intune (device management and endpoint compliance)
• Microsoft Entra ID (Azure AD) (identity, SSO, access control, MFA, PIM)
• 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 (Entra, Intune, Defender, Purview, Exchange, Teams).

Operational Support & Communication

• 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.

Must-Have

• 4+ years of experience in a system administration or infrastructure operations role.
• Strong communication and documentation skills in English.
• Strong hands-on experience with:
• Microsoft platforms (Active Directory, Office 365, Intune, Azure/Entra ID)
• Security systems (SIEM, Antivirus, DLP)
• Basic Linux administration and scripting (e.g., Bash, PowerShell).
• Experience configuring and supporting end-user hardware (desktops, laptops, printers).
• Knowledge of security tools such as disk encryption, endpoint protection, and local firewalls.
• Experience working in enterprise or regulated environments.

Preferred Qualifications

• 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.

Certifications (Preferred)

• Microsoft Azure Administrator - AZ-104
• Cloud certifications - Azure, Office 365 (Intune, Entra, SharePoint)
• SC-300: Microsoft Identity & Access Administrator Associate
• MD-102: Endpoint Administrator Associate
• MS-102: Microsoft 365 Administrator (Expert)

Our benefit

• Attractive salary package + 13th payment + additional performance bonus
• Salary review every year
• Your contributions to social insurance, medical insurance, unemployment insurance and your income tax are covered. The social insurance contribution is calculated based on your real income (the above salary) and the social insurance law.
• 15 days of annual leave and 5 days of paid sick leave per year.
• Premium health checkup + health care package
• Company trip, big annual year-end party every year, team building, etc.
• Fitness & sport activities: Football, Badminton, Yoga, and Table Football.
• Free and unlimited snacks, tea, coffee...
• You will have Laptop or desktop and extra full HD monitor for work purposes
• Good career advancement opportunities
• Opportunities to work overseas in UK / Norway / Singapore
• Coaching and training supported ( Udemy, edex, courase) , self-studying supported(returning fee for getting AWS, Azure, and other certificates)
• And much more, join us and let yourself explore other fantastic things!

Our working environment

• Agile project management style. International, English-speaking, dynamic and friendly working environment
• Work with those who see the workplace as a second home
• Working Time: Flexibly register your starting time of a day from 8:30am to 10:00 am, Monday to Friday
• Office Address: 6th Floor, Van Thanh Tower, 602/27 Dien Bien Phu, Ward 22, Binh Thanh District, HCMC

Why Join [protected info]?

• Be part of a global team driving innovation in the insurance sector.
• Work in a dynamic, fast-paced environment with opportunities for professional growth.
• Contribute to a platform that impacts thousands of users worldwide.
• Enjoy a supportive and collaborative workplace culture.