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2568

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : System Engineer (Mid-Level)

ระยะเวลา : กันยายน 2568  ถึง  ปัจจุบัน

รายละเอียดงาน :

- Adhered to IT Workflow processes, including Service Request and Change Management, responsible for managing and resolving system issues in accordance with organizational policies.
- Governed VMware vSphere 7.0/8.0 (vCenter & ESXi) including system provisioning, relocation via vMotion, host/VM hardware upgrades and patching, as well as capacity planning and data protection to ensure high availability.
- Operated Microsoft Exchange Server 2019 managing Mailbox/Shared Mailbox/Room Mailbox and Distribution Groups; controlling Mail Flow & Transport (Receive Connectors, Mail Queues); administering Anti-Spam/Anti-Malware; monitoring Services/Databases/Queues; and performing Log Analysis and Incident Troubleshooting.
- Deployed CrowdStrike Falcon (XDR) for real-time AI-driven behavioral threat detection covering zero-day, malware, and ransomware, while conducting Attack Path analysis, performing Root Cause Analysis (RCA), and executing Incident Response and proactive Threat Hunting to reduce MTTD/MTTR.
- Orchestrated servers and clients using HCL BigFix, focusing on Windows patch deployment to mitigate security risks, software deployment in compliance with organizational standards and policies, and PowerShell/.bat script deployment to automate system operations.
- Ensured and managed Veeam Backup & Replication across VM, Agent, and Repository layers, monitor logs and troubleshoot Backup/Replication jobs including tuning job configuration, proxy, and overall performance, and manage storage capacity while performing system upgrades.
- Optimized and managed storage systems on IBM FlashSystem 900 and Lenovo ThinkSystem Expansion Perform provisioning, RAID/pool configuration, LUN mapping, and host integration (VMware/backup) Monitor and optimize performance to support workloads efficiently.
- Diagnosed alerts from the monitoring system and analyze root causes of incidents, troubleshoot and resolve server performance and resource utilization issues, and perform basic server configuration while coordinating with relevant teams to ensure SLA compliance.
- Provisioned Synology NAS including RAID and storage configuration, user and file service administration (SMB/NFS, iSCSI), implement backup and snapshot policies for data protection, and monitor system health while applying security patches.
- Standardized Windows Server covering Roles/Features, User/Group, permissions, and NTP configuration, monitor and troubleshoot performance, services, and resource utilization in production environments, and support Network Layer 1–3 while utilizing PowerShell for automation and system optimization.
- Executed SAN Switch (Brocade Fibre Channel) configuration by creating aliases and zones to connect servers with storage, perform zoning configuration including create zone, add member, and enable/save configuration via CLI, and verify port status and connectivity to ensure proper server access to storage.
- Maintained and configured Unix/Linux systems including user/group administration and permission management, monitor processes, memory, and disk utilization with log analysis, and perform TCP/IP network configuration while supporting Network Layer 1–2 operations.
- Strengthened email security policies in Trend Micro Vision One / Cloud Email Gateway, including allow/block lists, trusted sender lists, detect and quarantine email threats (spam, malware, phishing), and analyze email security logs, while integrating with Exchange Server to adjust policies and resolve security issues.
- Secured CyberArk (PAM) including Vault, PTA, CPM, Alero, and PSM by overseeing privileged accounts, safes, and platforms, developing and enforcing policies such as password rotation, policy enforcement, and troubleshooting authentication/connectivity issues, while coordinating version upgrades to ensure system security.

2566

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : System Engineer (Level 2)

ระยะเวลา : ธันวาคม 2566  ถึง กันยายน 2568

รายละเอียดงาน :

- Optimized daily operations, monitoring, reporting, and optimization of virtualized environments to enhance system stability and resource utilization.
- Governed VMware vCenter and ESXi environments, including user and group access control, host resource optimization, troubleshooting vSphere/vCenter alerts, VM lifecycle management (provisioning, OVF deployment, snapshot, vMotion, and datastore relocation), virtual networking configuration (vSwitch and VLAN), and vCenter certificate management.
- Oversees Microsoft 365 tenant environments covering Microsoft Exchange Online, SharePoint Online, OneDrive, and Microsoft Teams, administering Identity & Access via Microsoft Entra ID (RBAC, Conditional Access, MFA), managing licensing and provisioning, implementing Email Security & Compliance (SPF, DKIM, DMARC, DLP, eDiscovery), performing directory synchronization using Azure AD Connect, integrating Microsoft Graph API, and perform cloud migration initiatives.
- Conducted vulnerability scanning with Tenable Nessus for Windows and Linux servers (domain and non-domain), configuring credentialed scans, assessing risks, and performing remediation to improve system security.
- Ensured Veeam Backup & Replication, monitoring and troubleshooting backup jobs, generating daily, weekly, and monthly reports, managing DC-to-DR replication, performing upgrades, optimizing performance, and planning backup capacity.
- Provisioned and managed enterprise storage systems (IBM V7000 and HPE 3PAR), including volume/pool creation, host configuration, LUN mapping, and storage rescanning to support ESXi and backup environments.
- Stabilized Active Directory Domain Services (AD DS), including user, group, and organizational unit (OU) management and access control. Managed replication between Domain Controllers, monitored and resolved AD replication sync issues to ensure data consistency across sites, and performed system migration and version upgrades.
- Enforced Group Policy Objects (GPOs) to manage user and computer permissions, enforce security baselines, and control software installation, administrator rights, password policies, screen savers/lock screens, service accounts, and logon scripts for enhanced domain security.
- Supported and configured Internet Information Services (IIS) for deploying applications using ASP.NET and .NET Core, including troubleshooting issues. Managed SSL certificate renewal for Web Servers and Web Hosting to ensure secure HTTPS connections.
- Streamlined Windows Print Server, including installing Printer Drivers, sharing printers with clients via Devices and Printers, and setting up network mapping and drive path configurations for seamless printer access.
- Hardened and optimized Sangfor EDR (Endpoint Detection and Response) for real-time behavior-based and IOC threat detection, Attack Chain analysis, RCA, and Incident Response including endpoint isolation, malware/ransomware remediation, and enforcement of security policies.
- Regulated internal DNS and DHCP services by creating DNS zones, adding DNS records (Host/Alias), configuring DHCP scopes, defining IP ranges, lease times, subnet masks, gateways, DNS settings, and managing IP reservations for internal devices.
- Automated Windows Server Update Services (WSUS) to update security patches for various servers, including Application Servers, Web Servers, and Database Servers, to ensure system security and stability.
- Developed monitoring dashboards using Zabbix to track the status of servers, services, hardware, and systems, providing proactive monitoring support for Service Management Center Tier 1, and troubleshooting issues to ensure system reliability.
- Standardized the Windows Server operating system by configuring Local User access, Group Access, and Permissions to ensure efficiency and security, including setting up NTP to synchronize system time with standard protocols.
- Fine-tuned Windows File Server (SMB) on VM Server, created sub-folders, configured storage quotas, shared files, and set access permissions for users/groups via network map drives.
- Evaluated Proof of Concept (POC) testing for new solutions such as Proofpoint (Email Security) and CyberArk (Privileged Access Management) to evaluate their feasibility and effectiveness.

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : System Administrator

ระยะเวลา : กันยายน 2566  ถึง พฤศจิกายน 2566

รายละเอียดงาน :

- Adhered to IT Service Management (ITSM) processes covering Incident, Change, and Service Request management, ensuring tasks are completed within defined SLAs.
- Governed Active Directory (AD), including user and group management, permission assignment, and domain administration to support organizational access control.
- Standardized and maintain Windows Server systems, including system configuration, local user/group management, and service monitoring to ensure system availability.
- Sustained operational support for Linux servers by monitoring system status, executing scheduled scripts or batch jobs, and coordinating issue resolution with relevant teams.
- Provisioned Virtual Machines via VMware vCenter, including VM provisioning, operational support, and snapshot management.
- Executed Vulnerability Assessment (VA) scans on servers, analyze risk severity, prepare reports, and coordinate remediation with relevant teams.
- Automated Windows Server Update Services (WSUS) to manage patch deployment across Production (PRD) and UAT environments.
- Supervised system performance using SolarWinds across Server, Application, Database, and Storage environments, including performance, resource utilization, and alert management.
- Facilitated operational support for Microsoft SQL Server, including service restarts and management of blocking or long-running sessions via Activity Monitor.
- Resolved critical business systems in collaboration with application teams and vendors, including Voice Call Center and payment transaction systems.

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : Cloud Operations

ระยะเวลา : มกราคม 2566  ถึง สิงหาคม 2566

รายละเอียดงาน :

- Provisioned and managed cloud infrastructure on Microsoft Azure and OpenStack, including Virtual Machine (VM) creation, configuration, and secure access management using password-based and SSH key-based authentication.
- Operated and support containerized workloads on Azure Kubernetes Service (AKS), monitor Pod and Service status, and perform application-level troubleshooting using Kubernetes CLI (kubectl).
- Automated and managed Virtual Machines across cloud environments using Terraform to support application deployment and environment consistency.
- Utilized GitLab to retrieve and update application files for server deployment, validate versions, and coordinate patch releases to Production.
- Adapted configuration files or scripts provided by the development team using Visual Studio Code, ensuring compatibility before deployment.
- Maintained and configured Linux operating systems, including user and file permission management, service monitoring, and system log analysis to ensure stable operations.
- Resolved incidents across VM, container, and application layers to minimize downtime and maintain production stability.
- Developed and designed monitoring dashboards using Grafana to track server and application health, define key metrics, and support Tier 1 Operations in proactive monitoring.
- Collaborated within an Agile (Scrum) framework, managing tasks via Jira and maintaining technical documentation in Confluence.

2564

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : IT Infrastructure Administrator

ระยะเวลา : มิถุนายน 2564  ถึง ธันวาคม 2565

รายละเอียดงาน :

- Resolved server and client issues under the ITIL framework through Incident and Service Request processes, ensuring SLA compliance aligned with organizational targets.
- Governed Active Directory (AD), including user and group administration and access control configuration.
- Standardized WSUS policies via Active Directory (GPO), manage OU and computer groups, and monitor patch deployment and compliance to mitigate operating system vulnerabilities.
- Hardened and configure Trend Micro EDR, including endpoint policy management, device control enforcement, antivirus operations, security monitoring, and root cause analysis (RCA) to strengthen endpoint protection.
- Streamlined Fuji Xerox Print Server, including printer deployment, driver management, access control configuration, and troubleshooting printing issues.
- Diagnosed and troubleshoot enterprise systems and applications such as AS400, SAP, Power BI, Web Applications, and Google Workspace to ensure continuous business operations.
- Provisioned Windows Server and Windows Client operating systems, and provide L1–L2 LAN network support to maintain system stability and availability.
- Leveraged PowerShell to perform operational tasks on Windows Server and Active Directory, including querying user/group information, updating account details, and supporting basic automation.

2561

ประเภทธุรกิจ : คอมพิวเตอร์-ไอที

ตำแหน่งงาน : FTTH Maintenance Administrator

ระยะเวลา : ธันวาคม 2561  ถึง มิถุนายน 2564

รายละเอียดงาน :

- Orchestrated MA (Maintenance) trouble tickets through the system, schedule and prioritize tasks, and follow up until successful closure.
- Supervised and coordinate field technicians to ensure on-site resolution within SLA requirements.
- Diagnosed root causes of issues such as fiber cuts, low optical signal, and ONU/Router malfunctions.
- Governed and control contractor KPIs, including On-Time performance, SLA compliance, and Repeat Trouble rate.
- Analyzed incident statistics within the assigned area to reduce recurring issues.
- Formulated daily, weekly, and monthly maintenance performance reports.
- Liaised with the Call Center and Customer Service teams for urgent cases and customer escalations.