Md. Ataur Rahaman Mondol

• Deployed and managed 5-node Proxmox VE clusters with HA, Ceph, iSCSI, and NFS storage, achieving 99.99% service availability. • Administered Linux servers (AlmaLinux, Ubuntu), core services (DNS, DHCP, SMTP, Samba, NFS), and web hosting platforms. • Automated patching, backup, and compliance tasks using Bash, Python, and Ansible. • Managed Office 365, email infrastructure, VPN connectivity, SSL, and enterprise endpoint security.

• Managed Microsoft 365, Exchange, Google Workspace, Zimbra, and enterprise email security solutions. • Architected VMware, Proxmox, Hyper-V, AWS, Azure, and hybrid cloud infrastructures. • Led datacenter virtualization, P2V/V2V migrations, storage (SAN/NAS/vSAN), and Dell EMC VxRail deployments. • Implemented Veeam backup & disaster recovery, Nextcloud platforms, and automated infrastructure operations using PowerShell and PowerCLI.

• Architected air-gapped Wazuh SIEM/SOAR with OpenSearch, OpenCTI, IRIS & Grafana. • Built hardened portable virtual appliances (OVA/OVF/VMDK/QCOW2) with automated deployment and lifecycle management. • Designed Proxmox segmentation, HA Wazuh clusters, HAProxy NLB & Filebeat pipelines. • Integrated EDR, firewall & server logs with automated response workflows. • Deployed Palo Alto, FortiGate, Sophos firewalls, EDR/XDR solutions, and secure VPN connectivity.

• Led SAP Business One ERP implementation and migration to SAP HANA on SUSE Linux, ensuring successful deployment. • Managed Active Directory, RDS, Exchange, SQL Server, MySQL, and SAP HANA environments. • Architected VMware virtualization, including P2V, V2V, and V2P migrations, Dell EMC storage, backup, and datacenter operations. • Administered Linux/Windows infrastructure, web hosting, VPN, DNS. • Administered enterprise network security including Firewall and Endpoint EDR/XDR • Build a LAN for 800 nodes

• Monitored enterprise networks and responded to incidents in real time, ensuring high availability and minimal downtime. • Managed Active Directory, file/print, web, FTP, mail, DNS, DHCP, proxy, and Samba servers across multiple client projects. • Administered SolarWinds and PRTG monitoring solutions, network configuration, IP management, and backups. • Provided 24×7 technical support and maintained operational documentation and NOC infrastructure.