IT Systems & Infrastructure Engineer

About the Role: We are looking for a hands-on and motivated IT Systems & Infrastructure Engineer to join our MIS team in Singapore. This is a broad infrastructure role covering Microsoft365, identity and access management, endpoint security, servers, backup and recovery, SaaS platforms, networking, hardware and data-centre operations. You will work closely with our existing Network & Hardware Engineer and the MIS Manager, supporting CADIT users and systems globally. The role is designed for someone who wants to build a strong career in IT infrastructure and systems administration. We are looking for someone who is curious, methodical, hands-on, willing to learn and genuinely interested in infrastructure. Training and certification support will be provided. Key Responsibilities: Microsoft 365 & Identity Administration • Administer Microsoft 365 users, licences, groups, shared mailboxes and permissions. • Support Exchange Online, SharePoint, OneDrive and Microsoft Teams. • Manage user joiner, mover and leaver processes. • Support Microsoft Entra ID, MFA, account access and password/lockout issues. • Maintain accurate documentation of tenant and access changes. Endpoint & IT Support • Build, configure, deploy and maintain Windows PCs and laptops. • Install and maintain operating systems, applications, drivers, firmware and licensed software. • Provide first-line technical support for hardware, software, operating system, connectivity, printing and access issues. • Maintain endpoint protection and security coverage using Bitdefender GravityZone. • Monitor and respond to endpoint security alerts and escalate potential incidents appropriately. Systems & Infrastructure Operations • Support the company's office server room and co-located data-centre rack. • Assist with server installation, configuration, firmware, RAID, operating systems and monitoring. • Perform hardware replacement including disks, power supplies, memory and fans. • Maintain rack equipment, cabling, labelling, UPS systems and physical infrastructure. • Coordinate data-centre access, remote hands and scheduled maintenance activities. • Maintain proper change records and infrastructure documentation. Network &Infrastructure Support • Work alongside the Network & Hardware Engineer to learn and support: • Firewalls • VLANs • Switches • Wireless networks • IP addressing • DNS and DHCP • VPN connectivity • Handle routine network troubleshooting and changes under appropriate supervision. • Progressively develop the capability to provide infrastructure cover when the incumbent engineer is unavailable. • Support networking requirements for CAD-IT's IoT and project deployments where required. Backup, Patching & Monitoring • Monitor backup jobs and investigate failures. • Perform and document periodic restore tests. • Support operating system and firmware patching activities. • Monitor infrastructure alerts and system health. • Maintain records for backup, recovery and business continuity procedures. SaaS & Platform Administration • Administer CAD-IT's internal monday.com account, including users, licenses, permissions, workspaces and boards. • Support administration of other business SaaS platforms managed by MIS. • Maintain accurate user access and license records. • Identify opportunities to improve platform governance and operational efficiency. Documentation & Asset Management • Maintain hardware and software asset registers. • Track licenses, warranties and equipment ownership. • Maintain network diagrams, rack layouts, cable schedules and technical documentation. • Create and maintain practical runbooks and standard operating procedures. • Ensure infrastructure changes are properly documented. Global IT Support • Provide remote IT support to CAD-IT users and offices outside Singapore. • Communicate clearly with users across different time zones. • Explain technical issues in simple, non-technical language. • Maintain clear ticket updates and follow through until issues are resolved. Continuous Learning & Development • Develop your skills across systems administration, networking, infrastructure and security. • Complete relevant training and certifications supported by the company. • Work towards Microsoft, CompTIA and other relevant infrastructure certifications. • Develop sufficient cross-functional knowledge to provide infrastructure coverage and support. Requirements: Must Have • Post-secondary qualifications in IT, Information Technology, Infocom Technology, Computer Engineering, Electronics or a related discipline. • Candidates with ITE Higher Nitec, Polytechnic Diploma or Degree are welcome to apply. • Relevant hands-on experience may be considered in place of formal qualifications. • Basic working knowledge of Windows operating systems and an understanding of Windows Server. • Basic understanding of networking concepts including: • IP addressing and subnets • DNS • DHCP • VLANs • Switches • Firewalls • Comfortable working with physical IT hardware, including PCs, servers, cabling and rack equipment. • Able to follow technical procedures carefully and document work performed. • Good spoken and written English, with the ability to communicate with users across different countries. • Strong attention to detail and a responsible approach to IT security and access management. • Willingness to participate in an emergency contact/on-call roster and occasional planned evening or weekend maintenance activities. • Genuine interest in IT infrastructure and systems administration. Exposure to any of the following would be advantageous: • Microsoft 365 administration • Microsoft Entra ID / Azure AD • Microsoft Intune • Exchange Online, SharePoint, OneDrive or Teams • Endpoint security platforms such as Bitdefender, Microsoft Defender, CrowdStrike or Sophos • Business SaaS administration such as monday.com, Google Workspace or Atlassian • Firewalls such as…