Experience
Nine years of hands-on infrastructure work — from structured cabling to HPC fabrics. Pick a role to see what I actually did.
Linux Engineer / Junior Solution Engineer
Robust HPC Sdn Bhd · Selangor, Malaysia
Jan 2025 – Present · 1 year 10 months
Project Involvement
Perodua – VxRAIL Cluster Expansion, VDI Cluster Expansion, Storage Expansion
- Installed Dell VxRail servers on the rack.
- Configured the ToR switch for VMware networking.
- Set up the Omnissa Horizon Connection Server for the new cluster.
- Set up and configured the NVIDIA license server for VDI.
- Documented all networking and VDI configuration for the design documents.
- Created administration documents and UAT for the customer.
Perodua – VxRAIL Old Cluster Upgrade
- Performed the upgrade using vCenter.
- Engaged with the cluster team and VMware support during troubleshooting of the upgrade issue.
SNS Sdn Bhd – Configure InfiniBand Network Switch, Change InfiniBand Switch Firmware
- Reset and migrated the InfiniBand switch from Onyx OS to Mellanox OS.
- Configured the InfiniBand switch for the HPC/AI cluster.
- Set up HA for the InfiniBand switch.
National University of Singapore – Set Up NVIDIA UFM for HPC Cluster Expansion
- Installed and configured UFM on RHEL (bare metal).
- Troubleshot UFM HA compatibility issues on RHEL.
- Ran UFM in Docker and applied HA using Corosync for cluster messaging and membership management, Pacemaker for resource management, and DRBD for data redundancy and fault tolerance.
- Performed NCCL tests on Hopper H200 infrastructure for TOP500 benchmarks.
Sains Sarawak – HPC Deployment
- Helped the engineer set up the InfiniBand network remotely.
Support
Perodua – VDI Support
- Troubleshot and administered VDI infrastructure for both the old and new clusters.
- Performed preventive maintenance for both clusters.
- Attended troubleshooting sessions with the principal vendor for critical issues.
Gamuda Land – VDI Support, Render Farm Support, Storage Support
- Troubleshot and administered VDI Horizon infrastructure.
- Troubleshot and administered render farm infrastructure.
- Performed patching and applied OS and application updates in line with security compliance.
- Arranged disk replacement with the principal vendor and the customer.
- Performed preventive maintenance for VDI and render farm infrastructure.
Malaysia Palm Oil Board – HPC Support
- Supported the HPC network, management network, and IBM Storage Scale as the DR backup solution.
- Performed firmware patches, troubleshooting, and fine-tuning of backup schedules.
Side Task
R&D and Development
- Deployed OpenStack infrastructure on top of Proxmox using Kayobe and Kolla-Ansible.
- Set up a Rancher cluster to manage and deploy RKE2, with Harvester and OpenStack as the cloud provider.
- Set up staging infrastructure with an open-source firewall, 1G and 10G switches, and bare-metal hosts.
- Set up a Cloudflare Tunnel with Zero Trust to access the data centre from outside.
- Set up a NetBird secure tunnel to manage connectivity for the staging infrastructure.
- Managed the open-source DNS server (Pangolin) by integrating it with the Kubernetes cluster via the Pangolin API.
- Implemented DevOps practices and developed software with GitLab CI/CD pipelines on the Kubernetes cluster.
- Deployed VMs using Terraform and configured them with custom Ansible playbooks.
- Set up a local LLM on CPU and GPU nodes with Open WebUI, and integrated agentic AI.
- Deployed self-hosted n8n workflows for in-house AI agent integration with the staging infrastructure.
- Documented all setup for the testing and staging infrastructure.
- Implemented open-source HCI on the staging infrastructure, including Harvester, OpenStack, Proxmox, and VMware.
- Set up Grafana, Prometheus, and Alertmanager with a mail relay to monitor infrastructure and receive alerts by email.
Senior IT Engineer (Resident Engineer)
Datakraf Solution Sdn Bhd · Selangor, Malaysia
Aug 2024 – Nov 2024 · 3 months
Project Involvement
Majlis Keselamatan Negara (MKN) – IT Infrastructure (NOC)
- Resident Engineer for Bahagian Teknologi Maklumat, Majlis Keselamatan Negara (MKN), Putrajaya.
- Engaged vendors and partners to keep the MKN infrastructure running smoothly.
- Performed preventive maintenance and presented the report to the MKN technical team.
- Planned and designed the wireless access points with an HA centralised controller.
- Designed and deployed the H3C wireless access point project:
- Proposed the configuration for the H3C Wi-Fi controller, access points, and PoE access switch connectivity.
- Prepared configuration documentation and support materials.
- Organised the team for configuration and deployment tasks.
Support
- Provided first and second level technical support to end users on infrastructure-related issues.
- Oversaw, supported, and ensured the functionality of network operations for the Data Centre (DC), Disaster Recovery Centre (DRC), and Network and Security Operations Centre (NSOC).
- Provided Level 2 network support for the National Cyber Security Agency (NACSA).
- Conducted analysis and prepared comprehensive reports on firewall and Intrusion Detection Systems (IDS).
- Adjusted and configured the MKN infrastructure according to recommended best practices.
- Engaged with partners and support teams for preventive maintenance and troubleshooting.
- Generated reports for security and device health checks.
- Presented and revised reports to customers.
Cloud Engineer
CTC Global Sdn Bhd · Petaling Jaya, Selangor
Sep 2022 – Aug 2024 · 1 year 11 months
Project Involvement
Cardzone Sdn Bhd – Managed Services for Kasikorn Bank (KBANK), United Amara Bank (UAB)
- Created golden images for Red Hat Enterprise Linux (RHEL).
- Provisioned VMs for applications and databases on TM Cloud (Huawei Alpha Edge).
- Configured and fine-tuned the web application firewall (WAF), firewalls, and switches.
- Provisioned and configured monitoring tools, the privileged access management (PAM) server, and the email relay server.
- Hardened infrastructure to comply with KPMG and PCI DSS requirements.
Aurelius Hospital – Managed Services for Aurelius Private Cloud
- Created and maintained all documentation related to the infrastructure environment (network, system, application).
- Verified the server rack layout and device installation.
- Managed and monitored the infrastructure using vROps.
Permodalan Nasional Berhad (PNB) – Managed Services for PNB Infrastructure
- Implemented deployment solutions for monitoring applications across all Linux/Unix servers.
Support
Cardzone Sdn Bhd — Bank Muamalat / Kasikorn Bank / United Amara Bank
- Stood by 24/7 for the production environment.
- Prepared Method of Procedure (MOP) and work plan documents for each change request and service request related to network (firewall) and system (Linux, application).
- Executed failover and failback operations during disaster recovery activities.
- Restored servers and set up mock servers using Acronis backup software.
- Facilitated knowledge transfer among team members.
- Created RCAs for critical issues, and prepared and presented reports to the internal team.
- Provisioned servers based on client service requests.
- Managed Red Hat servers with Red Hat Satellite.
- Managed repositories, manifests, licenses, and server lifecycles in Red Hat Satellite.
- Created and managed policies for Trellix Endpoint Protection.
- Updated and patched certificates on the web application firewall (WAF).
- Managed and updated firewall policies in line with the security protection reports.
- Created VPN connections for clients based on service requests.
- Performed disk expansion on Red Hat servers by attaching new disks and extending the volume groups.
- Monitored cron jobs and daily backups to ensure schedules ran correctly.
KPJ Hospital — HQ and Branches
- Provided support for troubleshooting Linux servers and application integration.
- Provided security alerts by email to customers about VNA advisories.
- Troubleshot Citrix workloads based on incident requests.
- Created VPNs for clients on request.
- Managed tier 1 and tier 2 firewalls by blocking IPs and updating policies.
- Performed daily health checks and sent reports to the customer.
- Performed 3-2-1 backups in vSphere at the end of every month.
- Checked, updated, and patched all Windows servers against security alerts and available updates.
Aurelius Hospital — HQ and Branches
- Led operations by identifying underlying issues found during daily activities.
- Created and maintained all documentation related to infrastructure environments (network, Linux system, application).
- Facilitated knowledge transfer among team members.
Permodalan Nasional Berhad (PNB) – Special Request
- Provided support for troubleshooting technical issues on Linux systems (Oracle, HP-UX, RHEL, Ubuntu).
- Resolved deployment challenges for monitoring applications.
- Assisted in diagnosing and resolving disk issues.
- Aided in troubleshooting access issues on Linux and database servers.
IT Support Officer
Malaysia Airports Holdings Berhad · Selangor, Malaysia
Nov 2018 – Aug 2022 · 3 years 10 months
Project Involvement
Network Migration
- Provided and documented all information for the network inventory.
- Assisted the vendor with switch replacement.
- Verified switch connectivity.
Support
- Performed backups and restores of Dell Force10 and Cisco switch configurations.
- Maintained familiarity with computer hardware relating to desktop, FIDS, and CCTV networking.
- Installed and configured hardware and software to ensure optimal performance and meet network requirements.
- Monitored and maintained computer systems and networks effectively.
- Guided users and clients through setup processes and issue resolution, either in person or over the phone.
- Troubleshot and resolved system and network issues by diagnosing hardware and software faults.
- Provided IT support services to all Application Management Groups.
- Created and managed databases for internal Microsoft Forms checklists and walkabouts.
- Created automation forms and databases to record all health check data.
- Performed daily health checks on passenger Wi-Fi connectivity and the baggage network.
IT Executive
Taj International College · Perak, Malaysia
Dec 2017 – Nov 2018 · 11 months
Support
- Managed all IT facilities (networking, computers, projectors, printers, hall audio system).
- Engaged vendors and outsourced providers for other services and maintenance.
- Kept track of and reported daily on all work progress.
- Maintained all computers in the student laboratories and for all staff.
- Managed the PA system (audio hall) for every event in the hall.
- Created matrix cards for students and staff.
- Managed and administered the email server for account creation and deletion.
Cabling Technician
SNS Network (M) Sdn Bhd · Perak, Malaysia
May 2017 – Nov 2017 · 7 months
Project Involvement
- Laid more than 500 network cables for a factory project.
- Performed cable tagging and housekeeping for all networking projects.
- Installed cable pipes and trunking to protect and secure the cables.
- Fabricated patch cords for Cat5e and Cat6 cabling.
- Installed and set up CCTV cameras, both PoE and powered.
- Laid DC power cabling for CCTV.
- Installed network faceplates and 3-pin power outlets for IT points in malls around Perak and Kuala Lumpur.
- Troubleshot network and CCTV faults from hardware to software.
- Involved in dismantling outlets for power and network cabling.