Senior System Administrator

MANTEC CONSULTING PTE. LTD.; Singapore; On-site; SGD 50,000 - 70,000; Full time

Job summary

A technology consulting firm in Singapore is seeking a qualified Technical Support Specialist to provide 24/7 support for technology infrastructure. The ideal candidate will have extensive experience with both Windows and Linux environments, skilled in network administration, server management, and troubleshooting. Strong technical knowledge and the ability to manage virtual machines are essential. This role offers opportunities for professional growth in a dynamic team environment.

Qualifications

• Hands-on experience with Windows and Linux servers.
• Strong knowledge in TCP/IP, DHCP, HTTP protocols.
• Experience in managing Active Directory and Domain Controllers.

Responsibilities

• Provide 24/7 support for technology infrastructure needs.
• Manage and troubleshoot server and network issues.
• Perform installations and configurations of server software.

Skills

Network administration

Linux systems management

Windows Server expertise

Virtual Machine management

Database management

Technical troubleshooting

Tools

VMware

Oracle Virtual Machines

Apache

IIS

MS SQL Server

Job description

• Delivered twenty‑four hour support for all technology infrastructure needs and issues, for environment including 5 Windows and 8 Linux based servers and 200 desktops and laptops (Windows, MAC and Linux) across three regional offices
• Efficiently implemented network file sharing by configuring NFS to share files and resources across the network
• Managing corn jobs, at Jobs, batch processing and job scheduling
• Hands on experience in protocols such as TCP/IP, DHCP, HTTP, SMTP, SSH, FTP
• Installed and configured SSH, SFTP, Managed email (Postfix and Sendmail), LDAP
• Installed Apache, IIS and configured Virtual hosts and also experience applying SSL certs for websites, CSR generation
• Installation of SAMBA utility software
• Create File systems using Logical Volume Management (LVM), LV Extend and Reduce
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations
• Provided systems and server management and oversight and resolution of network/connectivity and software issues for local and remote users
• Worked with Server OS performing setup, maintenance and troubleshooting for 2000, 2003, 2008, Responsible for building, configuring, and supporting workstations and servers.
• Performed hardware builds (upgrades and new machines), set up offsite backup systems, and contributed to system migrations
• Good hands on experience in building/managing Virtual Machines in Oracle and VMware virtual environments
• Experience in Windows Domain Controller, Active Directory configuration, users and group creation and management, folder permissions, network sharing, backup and maintenance
• Responsible for implementing and supporting Microsoft Office (2000, 2007, 2010) technologies
• Responsible for LAN/WAN administration and support
• Responsible upgraded and maintenance of server hardware components as per requirement.
• Worked with different hardware and software vendors to troubleshoot the hardware and software problems.
• Strong technical knowledge on Domain(Maintain and updating Domains CName and A Records in Godaddy.com, securepaynet.net, Net4in, Hostgator)
• Installed, configured and managed databases MS SQL 2000/2005 Server on Windows
• As the sole technical person, responsible for all technical matters, including architecture, purchasing, hardware/software setup, application installation, ongoing maintenance, desktop technical support to staff and clients, data backup, antivirus installations etc. Good team player with excellent work history as regards with work ethics, dependability and willingness to go an extra mile.