Tohidur R.

Network, System and cloud Administrator

Internetport Sweden AB • Full time

May 2025 - Present • 1 yr 4 mos

☁ Managed and maintained enterprise network infrastructure, including routers, switches, firewalls, VLANs, VPNs, routing, and wireless solutions. ☁ Provided remote administration and troubleshooting support for Linux and Windows servers, system services, and customer environments. ☁ Managed cloud infrastructure across platforms including Azure, AWS, and other hosting environments, ensuring availability, performance, and security. ☁ Configured and maintained virtualization platforms including VMware, Hyper-V, Proxmox, and cloud-based virtual machines. ☁ Administered Linux servers (Ubuntu, Debian, CentOS, Red Hat) including system updates, service management, performance monitoring, and security hardening. ☁ Managed Windows Server environments including Active Directory, DNS, DHCP, Group Policy, user management, and server troubleshooting. ☁ Configured and supported firewall solutions including Fortinet, Sophos, pfSense, OPNsense, and other security platforms. ☁ Implemented and troubleshot VPN solutions including IPsec, SSL VPN, OpenVPN, WireGuard, and remote access solutions. ☁ Performed server migrations, backups, monitoring, incident resolution, and infrastructure optimization for client environments. ☁ Automated administrative tasks using Bash/Shell scripting and Python-based network automation solutions to improve operational efficiency. ☁ Provided technical support, root cause analysis, and proactive maintenance to ensure high availability of customer IT services.