Senior Systems & Network Operations Leader

ARCHANA SUPERMARKET PTE. LTD.; Singapore; On-site; SGD 100,000 - 167,000; Full time

Job summary

ARCHANA SUPERMARKET PTE. LTD. is seeking a Senior Systems Administrator to lead a technical team and drive design, planning, and maintenance of the company’s IT infrastructure across servers and networks.

You will oversee server and network projects, configure internal systems, troubleshoot issues, manage virtualization (VMware, Citrix), ensure security, and document changes while aligning with business needs.

Qualifications

• Senior-level experience in system administration and team leadership.
• Experience designing and managing complex IT infrastructures.
• Strong troubleshooting and documentation skills.

Responsibilities

• Configure internal systems.
• Diagnose and troubleshoot technical issues.
• Supervise the Operations team.
• Upgrade the network infrastructure.
• Install servers, devices, and firewalls.
• Provide technical services and support for the company IT infrastructure.
• Maintain IBM Server and uptime during business transactions.
• Monitor the performance of servers, software, and hardware.
• Ensure the smooth deployment of new applications.
• Update technical documentation.
• Back up the server SQL database at regular intervals.
• Network-level: LAN connectivity, routers, firewalls, and security.
• Maintain internal systems, cloud, and network infrastructure.
• Virtualization technologies: VMware, Citrix, and Microsoft.
• Remote access solution support: VPN, Terminal Services, and Citrix.
• Remote monitoring and management of system alerts and notifications.
• Work escalated support issues related to Microsoft's core business solutions, WAN and LAN connectivity, routers, firewalls, security, and remote access solutions.
• Perform network assessments and security audits.
• Work with Sales Team to Engineer projects, identify new products and solutions, and research solutions for issues.
• Document maintenance for all computer systems and network infrastructure.
• Work with executive team members, decision-makers, and stakeholders to define business requirements and systems goals, and to identify and resolve business systems issues.
• Design and deploy new applications and enhancements to existing applications, software, and operating systems.
• Perform cost-benefit and return on investment analyses for proposed systems to aid management in making implementation decisions.
• Conduct research on software and systems products to justify recommendations and to support purchasing efforts.
• Gauge the effectiveness and efficiency of existing systems; develop and implement strategies for improving or further leveraging these systems.
• Ensure system connectivity of all servers, shared software, groupware, and other applications.
• Ensure compatibility and interoperability of in-house computing systems.
• Monitor and test system performance; prepare and deliver system performance statistics and reports.
• Provide orientation and training to end-users for all modified and new systems.
• Able to work on both Saturday, Sunday, and Public holidays, off days, will be on weekdays.

Skills

System administration

Team leadership

Network design

Troubleshooting

IT strategy

Tools

VMware

Citrix

Microsoft Windows Server

Firewalls

Job description

ARCHANA SUPERMARKET PTE. LTD. is seeking a Senior Systems Administrator to lead a technical team and drive design, planning, and maintenance of the company’s IT infrastructure across servers and networks.

You will oversee server and network projects, configure internal systems, troubleshoot issues, manage virtualization (VMware, Citrix), ensure security, and document changes while aligning with business needs.