Jonathan Sim: Email & Phone Number

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Systems Administrator at Modern Technology Solutions, Inc. (MTSI)|Las Vegas, Nevada, United States

Position:

Systems Administrator at Modern Technology Solutions, Inc. (MTSI)

Location:

Las Vegas, Nevada, United States

View Jonathan Sim's Email

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Last updated: 2026-06-23

Updated: 2026-06-23

Found email addresses for Jonathan Sim:

Business emails:

j**********m@gdit.com,

j**m@prxi.com

Personal emails:

j*****3@hotmail.com,

j**********m@comcast.net,

j***1@gmail.com

Found phones for Jonathan Sim:

+1-870-***-**90,

+1-909-***-**27

A different Jonathan Sim?

Work Experience 27 years

Systems Administrator at Modern Technology Solutions, Inc. (MTSI)

Sep 2025 - Current

Senior Systems Engineer at General Dynamics Information Technology

Dec 2018 - Jun 2025

Sr. Principal Engineer at Torch Technologies, Inc.

Oct 2016 - Dec 2018

Event Support Engineer/IMKM at Cubic Corporation

Jun 2012 - Oct 2016

Telecommunications Officer at Central Intelligence Agency

Mar 1999 - Dec 2011

Jonathan Sim started working in 1999, then the employee has changed 4 companies and 4 jobs. On average, Jonathan Sim works for one company for 5 years 4 months.

Their professional focus is End User Training, Information Management, and Knowledge Management across 3 core areas.

Jonathan holds CompTIA Security+ and Microsoft Certified Systems Administrator (MCSA) certifications.

Education

Bachelor of Science - BS at University of Phoenix

Frequently Asked Questions

What is Jonathan Sim's email address?

SignalHire found verified email addresses for Jonathan Sim, both business and personal. Their business email is j**********m@gdit.com, and personal emails include j*****3@hotmail.com, j**********m@comcast.net, and j***1@gmail.com.

What is Jonathan Sim's phone number?

SignalHire found multiple verified phone numbers for Jonathan Sim: +1-870-***-**90, and +1-909-***-**27.

How do I contact Jonathan Sim at Modern Technology Solutions, Inc. (MTSI)?

You can reach Jonathan Sim through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Jonathan Sim's professional background?

Jonathan Sim has 27 years of professional experience. They have held roles including Senior Systems Engineer, Sr. Principal Engineer, and Event Support Engineer/IMKM at companies such as General Dynamics Information Technology, Torch Technologies, Inc., and Cubic Corporation. Their education includes Bachelor of Science - BS from University of Phoenix.

Is Jonathan Sim's contact information up to date?

Yes. Jonathan Sim's SignalHire profile was last updated on 23 June 2026, reflecting their current position as Systems Administrator at Modern Technology Solutions, Inc. (MTSI) in Alexandria, VA, United States.

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