Senior IT System Engineer

Join Alphline Technologies, a dynamic, innovative Singapore-based IT solutions company where creativity meets technical expertise. We craft cutting-edge web, mobile, and infrastructure solutions that empower businesses to thrive. Since 2002, we have served MNCs, government agencies, SMEs, and start-ups with secure, high-quality technology solutions tailored to meet stringent standards. We are seeking a technically proficient and proactive Senior IT System Engineer to play a key role in designing, deploying, and managing robust infrastructure solutions across our client environments. As a Senior IT System Engineer, you will take end-to-end ownership of on-premises infrastructure , from solution design and implementation through to ongoing operations and optimization. You will also serve as a senior technical partner to our clients , leading infrastructure projects, resolving complex technical challenges, and providing guidance to the wider engineering team. This is a hands-on role suited to an experienced engineer who enjoys technical ownership, client engagement, problem-solving, and mentoring others . At Alphline Technologies, we're more than just an IT company; we're a team of passionate technologists dedicated to delivering impactful solutions. We foster a collaborative and innovative culture where your contributions are valued, and you'll have opportunities to grow alongside our success. If you're passionate about contributing to a collaborative and growth-oriented environment, we want to hear from you! Responsibilities: Client & Project Ownership — Act as the senior technical point of contact for assigned client accounts. Lead infrastructure projects from scoping and solution design through implementation, testing, documentation, and go-live. Infrastructure Design & Administration — Design, deploy, manage, and maintain on-premises Windows and Linux server environments, ensuring reliability, performance, and availability. Virtualization & Storage — Administer enterprise virtualization platforms such as VMware, Hyper-V, and Nutanix , together with SAN/NAS storage solutions. Perform capacity planning and optimization to support business requirements. Network Administration — Support and administer network infrastructure, including LAN/WAN, VLANs, routing, switching, firewalls, and VPNs, working closely with relevant teams and vendors where required. Operations & Incident Management — Oversee day-to-day infrastructure operations, monitoring, incident response, troubleshooting, and root cause analysis, driving issues through to permanent resolution. Security & Hardening — Implement system hardening, patch management, access controls, and other security best practices to maintain a secure and resilient infrastructure environment. Backup & Disaster Recovery — Implement, monitor, maintain, and periodically test backup and disaster recovery solutions to ensure data protection and business continuity. Compliance & Validation — Manage infrastructure in accordance with applicable ISO standards, CIS benchmarks, and GxP requirements, ensuring appropriate controls and documentation are maintained. Technical Documentation — Prepare and maintain SOPs, change records, validation documents, and infrastructure diagrams. Technical Leadership & Mentoring — Guide and mentor junior IT System Engineers, reviewing their work, supporting their technical development, and acting as an escalation point for complex issues. Innovation & Continuous Improvement — Identify opportunities to improve infrastructure reliability, security, efficiency, and automation. Contribute to hybrid/cloud initiatives and infrastructure improvement projects in collaboration with other teams. Requirements: Degree/Diploma in IT, Computer Science, or a related discipline At least 3 years of hands-on experience in on-premises IT infrastructure operations Strong experience with: Microsoft Windows Server, Active Directory, DNS, DHCP Linux server administration (at least one major distribution) Designing and architecting virtualization environments (VMware, Microsoft Hyper-V, or Nutanix AHV) Enterprise storage (SAN/NAS) Core networking fundamentals (LAN/WAN, VLANs, firewall, VPN) Proven ability to troubleshoot and resolve infrastructure issues independently Proven track record owning client relationships and leading project delivery end-to-end Comfortable guiding or mentoring junior engineers Fluent in English and Mandarin (spoken and written) to communicate with Chinese-speaking stakeholders and clients Able to work independently while collaborating effectively with internal teams Added Advantage: Immediate availability or short notice period No visa or work pass sponsorship required, now or in the future Experience in a regulated or compliance-driven environment (e.g., pharma, MNC) ISO27001 MSSQL administration Scripting or automation (PowerShell, Bash, VBA) DevOps or infrastructure as Code (Ansible, Terraform, CI/CD) Cloud platforms (AWS, Azure, or GCP) Monitoring and observability tools (ELK, TIG, or similar) Professional certifications in: Infrastructure (VMware, Microsoft, Nutanix) Networking (CCNA / CCNP) Security (CompTIA Security+) Cloud platforms Working Hours & Location: 5-day workweek (Mondays - Thursdays 9:30 am – 6:30 pm; Fridays 8:30 am – 5:30 pm) Location: Ang Mo Kio Benefits Work-from-anywhere once per week Competitive salary and performance-based bonuses Opportunities for professional development and career growth Up to 22 days of Annual Leave Health and wellness benefits