Senior IT Infrastructure & Systems Support Specialist (Singapore) at Horizon Quantum Computing

Horizon Quantum Computing; Singapore; On-site; SGD 110,000 - 140,000; Full time

Job summary

Horizon Quantum Computing in Singapore seeks a Senior IT Infrastructure & Systems Support Specialist to join the on-site team. The role focuses on managing data center and AI infrastructure, ensuring secure, scalable systems for developers and end-users, with hands-on administration of Linux, Windows, and NVIDIA compute environments.

You will oversee networking, IAM/AD, backups, disaster recovery, and office IT services, including Google Workspace and MDM (Jamf) across multiple platforms.

Qualifications

• Bachelor’s degree in Computer Engineering, Information Systems, Technology, or a related field.
• 5+ years of combined experience in system administration, IT infrastructure management, data center operations, and user support.
• Hands-on system administration across Linux (Ubuntu) and Windows Server.
• Strong expertise in network administration, VPN, Wi‑Fi, firewalls, and access control.
• Proven track record in vendor management, hardware procurement, backups, and servicing schedules.

Responsibilities

• Data Center & AI Infrastructure: administer, configure, and maintain Linux, Windows Server, and NVIDIA GPU/AI compute nodes.
• Oversee data center physical safety, rack setup, power/cooling, cabling, and preventative servicing.
• System administration for backups, disaster recovery, server health monitoring, and storage capacity planning.
• Networking & Security: manage local network infrastructure, firewalls, VPN, Wi‑Fi, subnets, and security protocols.
• IAM/AD: manage access controls, Active Directory/LDAP, and least-privilege principles.
• Office IT & User Support: serve as primary sysadmin for infrastructure users, developers, and staff; manage Google Workspace and core SaaS provisioning.
• MDM management (Jamf) to deploy and secure endpoints; maintain office IT equipment and Zoom Room setups.
• Coordinate IT logistics for presentations, events, and onboarding.

Skills

Linux

Windows Server

NVIDIA HPC

Network administration

IAM/AD

Vendor management

Education

Bachelor's degree

Tools

Jamf

Google Workspace

VMware

Active Directory/LDAP

Job description

Senior IT Infrastructure & Systems Support Specialist (Singapore) at Horizon Quantum Computing in Singapore, S00, SG.

This Full time on site position offers great opportunities for career growth.

Key Responsibilities

Data Center & AI Infrastructure Administer, configure, and maintain Linux, Windows Server, and NVIDIA GPU/AI compute nodes, including OS deployment, kernel & cluster updates, system patching, hypervisor management, and performance tuning.

Oversee data center physical safety, rack setup, power/cooling distribution, cabling, and scheduled preventative servicing.

Execute system administration tasks for backup, disaster recovery, server health monitoring, and storage capacity planning.

Networking & Security Management Administer local network infrastructure, firewalls, office Wi-Fi networks, subnets, and network security protocols.

Manage Identity and Access Management (IAM), Active Directory/LDAP systems, and access controls in accordance with least-privilege principles.

Implement and enforce physical security controls, system vulnerability management, patch enforcement, data loss prevention (DLP), and endpoint defense solutions.

Office IT & User Support Serve as primary system administrator and technical support engineer for infrastructure users, developers, and general end users.

Perform system administration across Google Workspace and core SaaS applications, managing automated user provisioning and settings.

Administer MDM tools (especially Jamf) to deploy, patch, configure, and secure macOS, Windows, and Linux endpoints.

Maintain office IT equipment, including AV systems, Zoom Room setups, and copiers.

Coordinate IT logistics for company presentations, internal events, and seamless new-hire onboarding setups.

Essential Requirements

Bachelor’s degree in Computer Engineering, Information Systems, Technology, or a related field.

5+ years of combined experience in system administration, IT infrastructure management, data center operations, and user support.

Hands-on system administration expertise across Linux (Ubuntu), Windows Server, and NVIDIA server environments.

Strong expertise in network administration, VPN, Wi-Fi, firewalls, and access control.

Proven track record in vendor management, hardware procurement, system backups, and servicing schedules.

Excellent troubleshooting skills and clear communication with both technical power users and non-technical staff.

Available to start work immediately.

Desirable Requirements

Certifications in systems or network administration (e.g., MCSA, CCNA, or NVIDIA hardware systems).

Proficiency with shell scripting (Bash, PowerShell, Python) for system automation and administrative tasks.

Experience working in high-performance computing (HPC) or deep-tech research environments.

Strong documentation skills for IT operational procedures, system SOPs, and disaster recovery plans.

About the Company

At Horizon Quantum, our mission is to unlock broad quantum advantage by building the software infrastructure that empowers developers to use quantum computing to solve the world’s toughest computational problems.

We're bridging the gap between today’s quantum hardware and tomorrow’s applications through the creation of advanced software development tools. Triple Alpha, our integrated development environment, enables developers to write sophisticated, hardware-agnostic quantum programs at multiple levels of abstraction.

Learn more at www.horizonquantum.com.

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