Full-Service IT Company

Keep your IT systems running smoothly with a certified team so you can focus on your business.


Let’s Streamline, Secure, and Simplify Your IT

Unlock enterprise-grade services at an SMB-friendly price with an award-winning IT company. Eliminate technology obstacles so you can focus on your business’s growth.

Entrust your IT to a team that supports small and mid-sized businesses. Gain access to the expertise you need to grow, and flexible services that deliver the value you deserve.

28+ Years

Supporting businesses

Companies trust us
Service and response
Customer satisfaction

One IT Partner, One Invoice, One Phone Call Away

Gain access to top-tier IT services and expertise when you work with a full-service IT company

Managed Services

Minimize IT hassles by outsourcing your day-to-day IT needs to qualified experts. Boost productivity with a team that manages computers, networks, and cloud systems.

Rapid IT Support

Eliminate downtime with Tier 1-4 support that provides comprehensive support. Enjoy friendly, knowledgeable service from helpdesk technicians within 15 minutes.

Vendor Management

Identify and install industry-leading technologies at competitive prices you won’t get at retail. Trust a vendor-neutral team that manages internet, hardware and software vendors.

Custom-Built Computer Systems

Enjoy responsive on-site support for cabling, repairs, new technology deployments, and more. Build custom computer systems that meet your company’s unique needs.


Sleep better at night with 24/7/365 systems, data, and application monitoring. Receive threat alerts in real-time and remediate issues before they impact your business.

IT Consulting

Make informed technology decisions and position your business for the future. Gain access to a dedicated vCIO who offers market intelligence and leadership support.

Cloud Services

Unlock the potential and cost savings of the cloud. Taking the first step into digital transformation or managing complex cloud environments? We can support you in your journey.

Compliance Services

Eliminate compliance hassles with an IT firm that helps you identify compliant technologies and deploy streamlined processes. We assist with HIPAA, PCI, NIST, and more.

Data Backup and Disaster Recovery

Protect your business against natural, man-made, and cyber threats. Protect valuable systems and data with on-site and off-site data backups and almost immediate recovery.


See What Our Clients are Saying…

Is Your IT Stable? Is it Secure?

We help more than 100 businesses across Missouri and Illinois confidently say “Yes” to both


An IT Company That Delivers Real Impact for Your Business

Experienced Team
Work with an all-local, all-star IT company that understands your needs

We are veteran-owned, and we are a long-standing Missouri local business. And the second generation is picking up the ropes.

When you call us, you are calling someone local to your place of business. For the past 28 years, Onsite Computer Consulting has partnered with over 100 small—to medium-sized businesses.

Work with an award-winning, VCSO-certified team that supports over 3,796 end users daily.

Fast-Acting IT Support
Gain access to 24/7 support and resolve issues in minutes.

Downtime costs even the smallest of businesses $137 per minute. You can’t afford to waste time on hold when the stakes are that high.

Access dedicated support channels, including via our automated ticketing system and telephone.

Prevent issues from becoming downtime with a team that responds within 15 minutes and resolves issues within 29.5 minutes.

One-Year Contracts
Operate the way you want to with contracts that keep you behind the wheel

Enjoy the flexibility of one-year contracts, allowing you to be agile in your decision-making. 

The 60-day termination clause speaks to our confidence in our services. Our team has a 98.68% customer satisfaction rating.

We look to build long-term partnerships and deliver value. It’s why clients stay with us for an average of 14.1 years.

Regulatory Compliance Management
Achieve and maintain compliance effortlessly with a qualified team

Make compliance a breeze when you work with a qualified team. Deploy compliant technologies and processes across your business effortlessly with OCCSI.

Streamline workflows with an IT company that advises and guides businesses with:

  • HIPAA 
  • PCI
  • FTC
  • IG1, IG2 & IG3
  • NIST
  • CMMC
Rapid Onboarding Process
Start seeing real results fast with an average onboarding time of 14 days

Eliminate the pain of migrating to a new IT firm. We onboard clients quickly so you can start seeing the benefits of our services faster.

Take advantage of a mature onboarding process that delivers results in as little as 14 days.

That means less cost and administrative overhead for your team, and you’ll start seeing real value from your services faster.

Onsite Computer Consulting Services Inc.

Frequently Asked Questions About Our IT Company

We specialize in a wide range of IT solutions tailored for mid-sized businesses, from cloud services and data management to cybersecurity and computer repair.

Our expertise extends to network infrastructure, ensuring robust connectivity and performance.

Whether you’re looking to overhaul your IT system, enhance your cybersecurity posture, or leverage cutting-edge technologies like AI and machine learning, our team is equipped to propel your business forward with innovative and efficient solutions.

Data security is paramount in our service delivery. To safeguard your data, we employ multi-layered security protocols, including encryption, firewalls, and intrusion detection systems.

Our team stays ahead of emerging threats by continuously updating our security practices and educating our clients on best practices for cybersecurity.

Rest assured, your data’s integrity and confidentiality are our top priority, ensuring you can focus on your core business activities with peace of mind.

Our customer support is designed around your needs. We offer 24/7 technical support via phone, email, and chat, ensuring help is always available.

Our dedicated team works closely with you to understand your business and tailor support accordingly.

Whether it’s routine maintenance or emergency response, our skilled technicians are committed to resolving your issues promptly and efficiently, minimizing downtime and maximizing productivity.

Our unique blend of technical expertise, customer-centric approach, and commitment to innovation sets us apart.

We don’t just offer IT solutions; we partner with you to drive digital transformation and business growth. Our deep industry knowledge allows us to anticipate and address specific challenges mid-sized businesses face.

Focusing on delivering tangible results and ROI, we ensure our clients stay ahead of the technological curve, making us not just a service provider but a trusted IT ally.

Our approach to IT infrastructure is inherently scalable and flexible, ensuring it supports your business growth throughout.

We conduct comprehensive assessments to understand your current and future needs, implementing solutions that can easily scale up in terms of capacity and complexity.

From cloud computing solutions that offer on-demand resources to modular software systems designed for easy expansion, we ensure that your IT backbone is robust yet adaptable, enabling seamless scaling aligned with your business trajectory.

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