Job Title: IT Infrastructure Engineer (System Administration) Contract: 2+ Years (Extendable) Location: East, Singapore Role Overview We are seeking an experienced IT Infrastructure Engineer (System Administration) to join our infrastructure team. The successful candidate will be responsible for the operations, support, maintenance, enhancement, and continuous improvement of critical enterprise systems, ensuring high availability, reliability, and performance across both on-premises and cloud environments. Key Responsibilities Manage enterprise IT infrastructure including installation, configuration, operation, and maintenance of hardware, software, and related systems. Administer, monitor, and support Linux and Windows servers across on-premises and Government on Commercial Cloud (GCC) environments. Support middleware systems including WebSphere Application Server and WebSphere MQ to ensure stable and reliable operations. Monitor systems proactively, troubleshoot issues, and resolve i...