Experienced System & Network professional with a strong background in Linux Systems Administration. With over a decade of experience, I have worked in various permanent and project-based organizations, playing a crucial role in implementing and maintaining infrastructure and applications. One of my key areas of expertise is managing application's hosting services, including DNS, Web, Mail, VPS, DevOps, Cloud and dedicated servers.Currently, I'm working as a Network Engineer in the ICT Cell at University of Dhaka. Prior to this, I served various roles including Sr. System Engineer and Technology Specialist (innovation) at BdREN for more than eight years, where I made significant contributions to the development and operations of their infrastructure. One notable accomplishment was introducing the Educational Roaming Service (eduroam) in Bangladesh, facilitating seamless network connectivity for educational institutions.As a trainer, I conduct national and international workshops, sharing my knowledge and skills. I have completed internships at OARnet, USA, and NORDUnet, Sweden, and participated in various training programs and workshops worldwide, including AIT Thailand, Global Knowledge Korea, APAN-45 Singapore, and APAN-46 New Zealand.With a strong passion for innovation and a deep understanding of systems and networks, I bring a wealth of expertise to any organization. I am committed to delivering high-quality solutions, leveraging my skills in Linux Systems Administration and network engineering to drive technological advancements and contribute to the success of your team.Technical Skill:- Linux Server Configuration: Configure, Troubleshooting, Debugging for any Linux Distributions as per requirements, - Web server: (Apache, Nginx, LiteSpeed)- Mail server & security (Postfix, Zimbra, Dovecot)- Security Hardening: Securing Linux system, including user accounts, firewalls, patches, etc.- Cloud Systems: AWS, GCP, Azure, OVH, Digital Ocean, OpenStack- Virtualization: VMware vSphere, Xen Server, Hyper-V, KVM, Proxmox, VirtualBox, VMware Workstation etc.- Monitoring Tools: Cacti, Nagios, LibreNMS, perfSONAR, NMIS- Network Management Information System, SmokePing, NetFlow, RANCID, Log Management, Ticketing Systems (OTRS, RT), ELK etc.- Networking: IP Address planning, sub-netting. Switching e.g. VLAN, NAT, DHCP, STP. Routing (static, default, RIP, OSPF, IGRP, EIGRP, i-BGP and e-BGP etc.) with IPv4 and IPv6. MPLS with L3VPN, L2VPN, VRF, Route Reflector, and Traffic Engineering. Wireless Controller with Radius authentication