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Senior IT System Administrator

Company prefers not to disclose
Computer & Software
Full-Time · On-site
Minimum Bachelor’s Degree
5 - 10 years of experience
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Job Requirements

On-site
5 - 10 years of experience
Minimum Bachelor’s Degree

Skills

Network Administration

Windows Server Administration

Linux

Job Benefits

Career Path

Laptop Provided

Annual Leave

Training/Certification

Perform Bonus

Meal Allowance

Health Insurance

This job post is managed by

GV
Gradion Vietnam

Job description for Senior IT System Administrator at Gradion

CORE RESPONSIBILITIES

System Administration & Infrastructure

- Identity & Access Management: Manage and maintain Microsoft Active Directory (AD) and integrated SSO solutions.

- MDM Ownership: Architect and oversee Mobile Device Management (MDM) policies across a heterogeneous environment comprising Windows, macOS, and Linux.

- Cloud & Domains: Administer Google Workspace at the Enterprise level.

- Cloud Infrastructure: Provide baseline support and monitoring for AWS environments (EC2, S3, IAM, Route 53).

- Network Management: Oversee office networking hardware (Firewalls, Switches, APs), VPNs, and SD-WAN configurations.

Security & Compliance

- Endpoint Protection: Deploy and manage enterprise-grade Antivirus/EDR solutions across all endpoints.

- Patch Management: Ensure 100% compliance on OS and third-party software updates.

- Audit Readiness: Maintain comprehensive documentation for IT assets, network diagrams, and security protocols.

- ISO 27001 Compliance: Uphold and support ongoing ISO 27001 certification requirements.

Service Desk Excellence

- Escalation Support: Serve as the final escalation tier for complex internal technical issues.

- Process Improvement: Refine ticketing workflows and build a comprehensive internal Knowledge Base.

- Onboarding/Offboarding: Automate the full lifecycle of employee hardware provisioning and software access management.

TECHNICAL REQUIREMENTS

- Operating Systems: Expert-level proficiency in Windows Server, macOS, and Linux (Ubuntu/Debian/RHEL).

- Directory Services: Deep experience with Active Directory, Group Policy (GPO), and Azure AD/Entra ID.

- SaaS & Cloud: Advanced Google Workspace administration and foundational AWS knowledge.

- Networking: Strong grasp of TCP/IP, DNS, DHCP, VLANs, and Firewall management.

- Security: Hands-on experience with EDR tools and MDM platforms.

SOFT SKILLS & QUALIFICATIONS

- Experience: 5+ years in IT operations, with at least 2 years in a Senior or Lead capacity.

- Service Mindset: Even at a senior level, you understand that internal stakeholders (employees) are the priority.

- Communication: Ability to translate complex technical concepts into clear, plain language for non-technical audiences.

- Problem Solver: A "find a way or make one" approach to technical roadblocks.

About the company
Gradion
201 - 500 employees

ABOUT US:

At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.

With a global vision and an AI-first approach, we enable clients to reshape strategies, optimize systems, and adopt cutting-edge technologies to create sustainable value.

From AI and data to cybersecurity, robotics, and large-scale enterprise platforms, Gradion designs practical solutions that lay the foundation for the next generation of billion-dollar companies.

OUR FACTS & FIGURES:

  • 23+ years of expertise — Gradion builds digital platforms & deep-tech solutions.
  • 3 continents: Asia, Europe and Africa.
  • 300+ specialists across 7 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany, Egypt, Indonesia.
  • 100+ enterprise clients, including several unicorns (e.g., Alaiko, HomeToGo, Roadsurfer).
  • Vietnam’s Best IT Company – recognized by ITViec for 7 consecutive years, including 2 consecutive years of ranking #1 (2024 and 2025) ISO 27001.
  • ISO 27001.
Office address

Phòng số PF-08, Tầng Lửng, Tòa Nhà Sapphire 2, số 92, Đường Nguyễn Hữu Cảnh, Phường 22, Quận Bình Thạnh, Thành phố Hồ Chí Minh, Việt Nam

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Senior IT System Administrator