Subnet Works · Belleville, NJ · NYC Metro
Network and infrastructure consulting for NYC-metro businesses that cannot afford downtime.
From ground-up network design to infrastructure assessment to ongoing remote administration, Subnet Works delivers hands-on expertise across the full stack.
Problems we solve
What brings clients to Subnet Works
Network outages with no clear cause
Performance degrades for no obvious reason. The VPN drops on some machines and not others. Wireless is spotty across the office. Troubleshooting starts over from scratch each time because no one has a current network diagram. The underlying issue is usually a combination of flat Layer 2 architecture, misconfigured spanning tree, or hardware that accumulated without a design.
Security gaps you have not fully inventoried
Open RDP on the firewall. Shared admin credentials. No MFA on remote access. Default wireless passwords. These are the entry points in most small-business incidents. A structured review identifies the gaps that carry the most risk and closes them without requiring a large security budget.
No dedicated IT coverage when something breaks
Your internal go-to person has three other jobs. Outside vendors charge emergency rates and do not know the environment. A retainer with an engineer who already knows the setup means faster resolution, documented changes, and a predictable monthly cost instead of unpredictable per-incident invoices.
Servers running on deferred maintenance
Backup jobs that report success but have never been tested against a real restore. A production server on end-of-life OS. Disks at 90% with no monitoring or alerting. Deferred maintenance on servers compounds quietly and fails loudly. The fix is structured management, not more reactive firefighting.
Infrastructure with no documentation
The previous IT person left. Nobody knows the firewall admin password. The server runs several services and the purpose of half is unknown. The backup target is a share on a machine that was decommissioned two years ago. An infrastructure assessment produces a written inventory and remediation roadmap you can act on immediately or hand to whoever comes next.
Services
Five services. One engineer.
Every engagement is scoped, implemented, and supported by the same CCNA-certified engineer. No account managers. No ticket queues. No handoffs.
Design
Network architecture, VLAN design, firewall policy, and infrastructure planning from the ground up.
Secure
Zero Trust access, intrusion detection, SSO, and security hardening for networks and servers.
Operate
Server administration, virtualization, ZFS storage, and ongoing remote infrastructure management.
About
One engineer, direct engagement
Subnet Works is an independent IT and network consulting practice serving small and mid-market businesses in the NYC metro. Every engagement is handled directly by a certified network and infrastructure professional with production experience across routing, switching, virtualization, and security.
Michael Guallpa, Cisco CCNA 200-301 and CompTIA Network+, handles all client work directly from scoping through delivery.
How we work
From first call to working infrastructure.
Assess
A short discovery call and, when useful, a paid infrastructure assessment with a written report covering topology, security posture, capacity, and prioritized remediations.
Design and implement
Clear scope agreed in writing before work begins. Fixed-fee or hourly. Documented changes, change windows agreed in advance. No surprise invoices.
Support
Retainer or per-incident. The same engineer who built it supports it. Documentation handed over so any future successor can pick up cleanly.
FAQ
Common questions
Do you work with businesses outside the NYC metro?
Onsite work is limited to the greater NYC metro area, including Essex, Bergen, Hudson, Passaic, and Union counties in NJ and the five NYC boroughs. Remote engagements are available for existing clients with an established working relationship.
What size of business do you typically work with?
Most clients are small and mid-market businesses in the 10 to 150-seat range. Subnet Works does not have a minimum seat count. If the scope fits the model, we can work together.
Do you resell hardware or software?
No. Subnet Works does not mark up hardware or software. Recommendations are vendor-neutral. If a purchase is needed, the client buys directly.
What happens if I already have an IT provider?
Subnet Works can work alongside an existing IT provider, focusing on a specific scope such as a network buildout, security review, or server migration. All changes are documented so your existing provider can take over.
How are engagements billed?
Infrastructure assessments are fixed-fee starting at $350. Project work is billed at $95/hour with scope agreed in writing before work begins. Retainer coverage starts at $600/month for a defined block of hours with rollover.