Top Managed IT Companies in San Diego

ProTelesis Corporation

Let The Pro's Manage Your IT

✓ Verified Provider Est. 1988
San Diego, CA
50–249 employees
Founded 1988
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ProTelesis Corporation is a managed IT services provider based in San Diego, CA, operating since 1988. It focuses on Managed IT Services, Cybersecurity, Cloud Services, IT Help Desk & End-User Support. Compare it against other San Diego managed IT providers, then request a quote.

Vetted by the Best IT MSP editorial team · Last updated June 2026

About ProTelesis Corporation

ProTelesis Corporation is a San Diego-based managed IT service provider with over 31 years in business, offering fully and co-managed IT, cybersecurity, cloud communications, and infrastructure services to businesses of varying sizes across industries.

Services Offered

🖥️
Managed IT Services
🔒
Cybersecurity
☁️
Cloud Services
🛟
IT Help Desk & End-User Support
🌐
Network Management
🔌
VoIP & Business Phone

Industries Served

🚚 Logistics & Transportation
🏥 Healthcare
🏛️ Government

Why Choose ProTelesis Corporation

📍

Based in San Diego

ProTelesis Corporation is headquartered in San Diego, CA, so San Diego businesses get a local team for on-site work instead of a distant call center.

31+ years / 700+ combined man-years of experience

31+ years / 700+ combined man-years of experience

90% of support calls answered within 1 minute

90% of support calls answered within 1 minute

Location

San Diego, CA

Certifications & Compliance

Lenovo
Cisco
Fortinet
Dell
VMware
Sophos

Frequently Asked Questions

Which IT services does ProTelesis Corporation provide?

ProTelesis Corporation delivers Managed IT Services, Cybersecurity, Cloud Services, IT Help Desk & End-User Support, Network Management, VoIP & Business Phone to organizations across San Diego, CA.

What area does ProTelesis Corporation serve?

ProTelesis Corporation is based in San Diego, CA and supports businesses across San Diego and the greater metro area.

When did ProTelesis Corporation start?

ProTelesis Corporation has been operating since 1988.

Is ProTelesis Corporation certified?

ProTelesis Corporation carries Lenovo, Cisco, Fortinet, Dell, VMware, Sophos.