“It's always DNS. When it isn't DNS, it's still DNS, you just haven't found it yet.”
I'm Osama Siddiqui, aka sudo osama. Infrastructure engineer with a fixation on security. Started messing with hardware before I had a reason to. By the time I hit IT Support professionally, it felt like second nature.
That obsession evolved from support into systems architecture, cloud infrastructure, and eventually a deep fixation on security. Whatever lands on my desk, the answer is "yes", even if I haven't met the tech yet. I'll learn it on the fly, usually at 3AM while the production environment hangs in the balance.
Built and shipped GamePinned: a Windows service that blocks game uninstalls for gaming cafes and esports venues.
Architected and delivered a greenfield IT infrastructure for a 500+ endpoint organisation from zero: network topology, server environment, and full security stack. Deployed FortiGate SD-WAN, Cisco L3/WLC, and 802.1X NAC across distributed offices. Led ISO 27001 and ISO 20000 certification simultaneously, authoring policies and managing external auditors through to sign-off. Handled Linux server operations for two subsidiary organisations and ran technical interviews for IT hiring.
Designed and managed production infrastructure for 5+ enterprise clients across Proxmox, VMware, and Windows/Linux environments. Handled Cisco Catalyst 9200/9300 L3 switching, VLAN segmentation, and a multi-vendor firewall estate (FortiGate, Sophos XG, OPNsense) across customer sites. Deployed Zimbra mail servers and IP PBX systems (FreeSWITCH, Asterisk) for clients without in-house comms expertise. Covered the full service lifecycle from scoping and architecture through deployment, monitoring, and incident response.
Deployed and managed Kaspersky EDR across 100+ enterprise endpoints for clients with no prior EDR coverage. Configured FortiGate, Cisco, and Palo Alto VPN for banking and government clients operating under strict compliance frameworks. Administered Azure-hosted and on-premises Hyper-V environments supporting eKYC platforms. Covered L1 through L3 support across all managed environments and produced compliance documentation and audit trails aligned with client security policies.
Covered L1 through L3 IT support for 500+ users, acting as the primary escalation point for hardware, software, network, and account incidents. Redesigned helpdesk ticket workflows and triaging processes, cutting average resolution time by 40% without adding headcount. Managed day-to-day operations including endpoint provisioning, user account administration, and vendor coordination.