John Tesar: Email & Phone Number

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Switch Engineer at tw telecom|Denver Metropolitan Area, United States

Position:

Switch Engineer at tw telecom

Location:

Denver Metropolitan Area, United States

View John Tesar's Email

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Last updated: 2026-08-29

Updated: 2026-08-29

Found email addresses for John Tesar:

Business emails:

j********r@twtelecom.com,

j****r@centurylink.com

Personal emails:

j*****r@gmail.com

Found phones for John Tesar:

+1-480-***-**65,

+1-323-***-**88

A different John Tesar?

Work Experience 14 years

Switch Engineer at tw telecom

Network Engineer at Comcast

Sep 2018 - Current

Transport Engineer at CenturyLink

Apr 2016 - Oct 2017

Voice Engineer at Level 3 Communications

Jul 2014 - Sep 2015

Senior Technical Support Engineer at tw telecom

Jul 2003 - Jul 2014

John Tesar started working in 2003, then the employee has changed 4 companies and 4 jobs. On average, John Tesar works for one company for 5 years 5 months.

Their professional focus is 5ESS, Business Process Improvement, and Cisco Certified across 3 core areas.

Frequently Asked Questions

What is John Tesar's email address?

SignalHire found verified email addresses for John Tesar, both business and personal. Their business email is j********r@twtelecom.com, and personal emails include j*****r@gmail.com.

What is John Tesar's phone number?

SignalHire found multiple verified phone numbers for John Tesar: +1-480-***-**65, and +1-323-***-**88.

How do I contact John Tesar at tw telecom?

You can reach John Tesar 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 John Tesar's professional background?

John Tesar has 14 years of professional experience. They have held roles including Network Engineer, Transport Engineer, and Voice Engineer at companies such as Comcast, CenturyLink, and Level 3 Communications.

Is John Tesar's contact information up to date?

Yes. John Tesar's SignalHire profile was last updated on 29 August 2026, reflecting their current position as Switch Engineer at tw telecom in Broomfield, CO, United States.

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