Senior Systems administrator

ARCHANA SUPERMARKET PTE. LTD.; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

ARCHANA SUPERMARKET PTE. LTD. in Singapore seeks a Senior Systems Administrator to lead a small IT team and own design, planning, and maintenance of the company’s server, network, and software infrastructure.

You will oversee virtualization (VMware, Citrix), implement security measures, manage VPN and remote access, monitor performance, and document systems while supporting business operations across weekends/holidays.

Qualifications

• Experience designing and maintaining enterprise IT infrastructure.
• Strong troubleshooting and incident response skills.
• Experience managing a team of IT professionals.

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
• Monitor performance of servers, software, and hardware
• Document maintenance for all computer systems and network infrastructure
• Design and deploy new applications and enhancements to existing systems

Skills

Team leadership

IT infrastructure

Problem solving

Tools

VMware

Citrix

Microsoft Windows Server

VPN

Firewalls

IBM Server

Job description

As a Senior Systems administrator manage a team and responsible for designing, planning, IT software and hardware maintenance, and having the highest level of performance as an expert in the system administration for computers and their complex operating systems. Plan, implement, oversee and maintain server and network infrastructures and projects.

• 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 upkeep the server accessible 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.