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Does Your Business Need IT Services?

CSI Tech Has Provided Professional IT Services Local and Nationwide Since 2000

Handling IT Yourself?

Why be an IT expert when you don't have to? We do it more efficiently.

  • Eliminate hassles with 24/7 support

  • Eliminate IT headaches

  • Improve response time

  • Increase employee productivity

Want to augment your IT Staff?

CSI Tech co-managed IT services provides customized solutions for businesses seeking a trusted partner to co-manage their IT department.


  • Help Desk

  • Network Operations Center (NOC)

  • Patch & Asset Management

  • Security Monitoring

  • Backup & Recovery

  • Infrastructure as a Service (IaaS)

Help Desk

Our IT helpdesk services are built to offer expert assistance when you need it the most. Our team is prompt and proactive and offers trusted support for all IT-related issues.

Cloud Services

Our team can assist you to develop a strategy suitable for your organization. We’re ready to help you develop, design, deploy, and drive the right cloud solutions that align with your needs. From Microsoft 365 to Azure and Cloud Backup we have what you need.

Data Backup & Recovery

Our multi-tiered Backup & Disaster Recovery services offer a complete solution for unpredictable data loss events. With our comprehensive recovery planning, we assure you that you never lose any essential data so that your business never experiences any downtime.

Cyber Threat Monitoring

We believe that preparation and continuous monitoring are the best ways to maintain network security. We develop a plan tailor-made for your business.

What makes CSI Tech unique?

Located in Crystal Lake, IL, CSI Technical Services has been providing IT services for over 24 years.

CSI Tech invests heavily in its tools and employee training to ensure our customers receive the absolute best level of service.

Everyone at CSI has a passion for technology.  Our team consists of talent from various technology backgrounds supporting Local Government, Manufacturing, Finance, and other highly regulated environments.

We Take Pride in Our Numbers


Years in Business


Satisfied Clients


End Users


Client Retention


IT Headaches

Our Partners


How do we keep our customers happy?

Simply put, we put our customers first.

  • We respond in a timely manner

  • We fix problems the first time

  • We keep up with your growth

  • We communicate with you

  • We don't waste your time

Our client retention is nearly 100% and nearly all of our new clients have been earned through referral or reputation.

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