Professional, discreet on-site IT support for Oak Brook offices, law firms, and financial and professional-services firms. Senior-level work for clients who expect it done right.
Oak Brook is corporate-office and professional-services country — law firms, financial advisors, consultancies, and regional headquarters clustered around the Oakbrook Center and the I-88 corridor. These are environments where discretion, reliability, and a professional on-site presence matter as much as technical skill. A technician in a branded polo who needs supervision doesn't fit a partner-track law firm; a senior engineer in business attire who just handles it does.
I provide exactly that: Microsoft 365 and Entra ID administration, secure endpoint and identity work, network and firewall support, and clean onboarding and offboarding — the kind of well-documented, audit-aware IT that professional firms need. For offices weighing whether to build a proper ticketing and asset-management system, I also implement ManageEngine ServiceDesk Plus and Freshservice end to end.
When you call a dispatch network, you pay a platform margin and whoever is nearest gets the ticket. With IT-OnCall you get the same senior, ITIL-certified engineer every visit — someone who learns your setup and is accountable from the first call to sign-off. No phone trees, no re-explaining your environment to a new face each time.
2-hour minimum on standard visits. Rates may vary by scope, distance, urgency, duration and contract volume. See full rate sheet →
Delivered personally by Mohammed Shaltoni — a 15+ year IT operations engineer, ITIL- and Dell-certified, insured, with a B.Sc. in Computer Science. Background includes running multi-site service desks for 1,400+ users across 26 locations and 400+ completed work orders.
Tell me the location, the issue, and when you need someone there — I confirm fast, usually the same day. On-site across Illinois and the central U.S., nationwide by arrangement.