Our Team

Jason Sandefer- Owner/Tech

From Houston Texas, Jason and his family moved to Central Arkansas in 2010 and began 640Square as an IT Consulting firm to small businesses across Arkansas and his home state of Texas. The journey has led 640Square through IT projects of various complexities all across the country. But the core of what 640Square does is support the IT needs of small businesses from 1-100 employees. Jason helps keep it all together and makes sure the techs have what they need to be successful. In an ever changing and complex IT landscape Jason works to make sure all clients networks are running as efficiently as possible and that client data is safe. In addition to 20 years of industry experience, Jason has a degree in business and computer certifications from Microsoft and CompTIA. Jason is also in the midst of pursuing a Masters degree in IT management.

George B.- Lead Technician

George has over 20 years experience as an IT Administrator. Today he is a Tier 3 Network and Systems Administrator of Windows and Linux networks. On a daily basis he deals directly with customers, vendors, business executives, and staff. His expertise covers multiple technologies including Microsoft Windows 10 and Office 365, Windows Server including Active Directory and Domain Administration, and Ethernet and Wireless routing. If you run Windows, MacOS, or Linux he is ready to support it. As a Managed Service Provider his talents are an asset to our company and partners and he is a trusted member of our team.

Jeffrey Chin- Technician

Jeffrey Chin is a system administrator with over 10 years of experience in information technology. Jeffrey graduated from Azusa Pacific University in 2013 with a bachelor’s degree in Health sciences. He is skilled in server and network administration, virtualization, cloud technologies, and python programming. In his free time, Jeffrey loves spending time with his wife and daughters, taking photos of the stars, or tinkering around with his mini datacenter homelab.

– Windows (Desktop and Server)
– Linux (Fedora, CentOS)
– Virtualization (Hyper-V, ESXi)
– Cloud (AWS, Azure, OpenStack)
– Monitoring (Zabbix, New Relic, SolarWinds, SevOne)
– Development (Python, HTML/CSS, SQL, Git, BASH)

– AZ-900: Microsoft Certified Azure Fundamentals
– MTA: Software Development Fundamentals
– Microsoft Certified IT Professional: Enterprise Desktop Support Technician
– CompTIA A+

– Photography (https://500px.com/jeffreychin89)
– Videography (https://www.youtube.com/jeffreychin89)

Mike Carroll- Special Projects- Senior Level Technician

Mikes experience lies within proactive and reactive network infrastructure management services and escalation support. His responsibilities include designing, implementing and continuously improving proactive monitoring and management services and taking ownership of all technical issues. For 640Square Mike handles more complex tasks such as virtualization management, complex firewall or networking tasks and advanced Windows server environment needs. Mike graduated from Rutgers University in 2008 and also from PC AGE IT Career Institute in 2010 with a diploma in Internetwork Engineering.