Linux Engineer / Junior Solution Engineer

Robust HPC Sdn Bhd · Selangor, Malaysia

Jan 2025 – Present · 1 year 10 months

Industry
IT Services
Specialization
IT/Computer – Hardware/Software
Role
Deployment Engineer, Solution Architect, Project Assistance, SME NVIDIA UFM / InfiniBand HPC Network
Position level
Permanent

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

Industry
IT Services
Specialization
IT/Computer – Hardware
Role
Infra Lead, Solution Architect, Project Assistance
Position level
Permanent

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

Industry
Information Technology
Specialization
IT/Computer – Hardware
Role
Cloud Engineer
Position level
Contract

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

Industry
Aerospace / Aviation / Airline
Specialization
IT/Computer – Hardware
Role
Technical Support
Position level
Permanent non-executive

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

Industry
Education
Specialization
Manage Hardware and Software
Role
Technical Administration
Position level
Permanent executive

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

Industry
Computer / Information Technology (Hardware)
Specialization
IT/Computer – Network/System
Role
Project deployment and support
Position level
Permanent non-executive

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.