John Coistek
AeroLeads people directory · profile

John Coistek Email & Phone Number

System Integration and Test Engineer Senior at Seeking a New Opportunity
Location: Ontario, New York, United States 7 work roles 2 schools
2 work emails found @gjrsolutions.com 1 phone found area 713 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 1 phone

Work email j****@gjrsolutions.com
Direct phone (713) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Seeking a New Opportunity
Role
System Integration and Test Engineer Senior
Location
Ontario, New York, United States
Company size
918 employees

Who is John Coistek? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

John Coistek is listed as System Integration and Test Engineer Senior at Seeking a New Opportunity, a company with 918 employees, based in Ontario, New York, United States. AeroLeads shows a work email signal at gjrsolutions.com, phone signal with area code 713, and a matched LinkedIn profile for John Coistek.

John Coistek previously worked as System Integration/Test Engineer Senior at Seeking A New Opportunity and Engineering Tech D at Yoh Services Consultant At Harris Rf Communications. John Coistek holds M.S, Computer Science from Rochester Institute Of Technology.

Company email context

Email format at Seeking a New Opportunity

This section adds company-level context without repeating John Coistek's masked contact details.

{first}@gjrsolutions.com
92% confidence

AeroLeads found 2 current-domain work email signals for John Coistek. Compare company email patterns before reaching out.

View email format View company profile Management contacts
Profile bio

About John Coistek

SUMMARY OF QUALIFICATIONSResponsible for designing, developing and implementing cost-effective testing proceduresCreated effective regression test plans Solid Software experience analyzing and prioritizing requirementsStrong Software Development background using C and other high level languagesExtensive experience working in a team environment sharing insights especially with junior team membersSecret ClearanceSpecialties: Particularly skilled in knowledge of Solaris and AIX Operating Systems. Strong Software Background using C and other high level languages. Tools used for System Integration include scripting languages like ksh, csh, bourne and bash shells.

Listed skills include Solaris, Aix, Operating Systems, Unix Shell Scripting, and 30 others.

Current workplace

John Coistek's current company

Company context helps verify the profile and gives searchers a useful next step.

Seeking a New Opportunity
Seeking A New Opportunity
System Integration and Test Engineer Senior
Ontario, NY, US
Website
gjrsolutions.com
Employees
918
AeroLeads page
Company profile
View company profile Email format
7 roles

John Coistek work experience

A career timeline built from the work history available for this profile.

System Integration/Test Engineer Senior

Current
Seeking A New Opportunity

Experienced System Integration and Test Engineer in both commercial and government defense applications. Saved the Navy time and cost by developing customized scripts to allow for automatic disk recovery. Provided customer satisfaction by executing test dry runs and witnessing subcontractor dry runs. Particularly skilled in knowledge of Solaris and AIX.

Jan 2016 - Present

Engineering Tech D

Yoh Services Consultant At Harris Rf Communications

Rochester, New York Area

  • Application is Unity XG-100 Portable Radio which allows first responders to use a single radio to communicate across VHF, UHF, 700 and 800 MHz radio frequencies.
  • Installed and configured software.
  • Executed Manual and Automated Tests.
  • Analyzed problems and reported results to development.
  • Validated development fixes.
Jan 2012 - Dec 2015

System Integration/Test Engineer Senior

Lockheed Martin Ms2

Applications include Submarine Electronic Warfare Systems and Unmanned Mine Hunting vehicles. Primary responsibilities include software and integration test of naval applications for the U.S military. Customized Linux Gnome Desktop to provide secure and user-friendly environment for sailors.Developed customized ksh scripts to allow for automatic disk.

Nov 2004 - May 2011

Senior Software Engineer

Nortel Networks, Inc

Designed, developed and integrated software for large-scale products requiring OAM&P support including Voice Navigation, a $160M revenue generating solution, and Directory Services, up to $135M annual revenue generating solution.Developed critical interface for major product launch using JAVA when crucial human resource was lost to project. Recognized by.

Jan 1997 - Jan 2001

Systems Consultant

Lpa Software, Inc

Served, as development and release support for multiple software releases that forecasted, acquired and distributed needed parts for Xerox's production planning efforts.Maintained the quality and performance of the CAMPS software through enhancements and fixes that extended the product life and generated $192K in revenue annually.Designed, developed and.

Jan 1996 - Jan 1997

Senior Software Engineer

Nortel Networks/Computer Consoles Inc

Served in various development and support capacities in these positions providing customer support for various hardware and software products, which met or exceeded customer's expectations. Nortel Rochester and Computer Consoles were dedicated to bringing large-scale database products to the Telephone Industry, which it dominated. Products included.

Jan 1979 - Jan 1996
Team & coworkers

Colleagues at Seeking a New Opportunity

Other employees you can reach at gjrsolutions.com. View company contacts for 918 employees →

PI Pill Iip Pill Iip Colleague at Seeking A New OpportunityPhilippines, Philippines View → DR Dan Ryan Dan Ryan Colleague at Seeking A New OpportunityBradenton, Florida, United States, United States View → JC John Campbell John Campbell Colleague at Seeking A New OpportunityOttawa, Ontario, Canada, Canada View → AP Ala Preston Ala Preston Colleague at Seeking A New OpportunityPanama City, Florida, United States, United States View → LN Luke Nguyen Luke Nguyen Colleague at Seeking A New OpportunityFremont, California, United States, United States View → MW Mike Wagester Mike Wagester Colleague at Seeking A New OpportunityTroy, Michigan, United States, United States View → SZ Syakir Zulfairi Syakir Zulfairi Colleague at Seeking A New OpportunityNaga, Kedah, Malaysia, Malaysia View → WB Wafa Binti Che Senu Wafa Binti Che Senu Colleague at Seeking A New OpportunityJitra, Kedah, Malaysia, Malaysia View → RB Robyn Biederman Robyn Biederman Colleague at Seeking A New OpportunitySan Antonio, Texas, United States, United States View → MC Mark Cushman Mark Cushman Colleague at Seeking A New OpportunityGreater Hartford, United States View →
2 education records

John Coistek education

B.A, Mathematics And Communications

St. John Fisher College
FAQ

Frequently asked questions about John Coistek

Quick answers generated from the profile data available on this page.

What company does John Coistek work for?

John Coistek works for Seeking a New Opportunity.

What is John Coistek's role at Seeking a New Opportunity?

John Coistek is listed as System Integration and Test Engineer Senior at Seeking a New Opportunity.

What is John Coistek's email address?

AeroLeads has found 2 work email signals at @gjrsolutions.com for John Coistek at Seeking a New Opportunity.

What is John Coistek's phone number?

AeroLeads has found 1 phone signal(s) with area code 713 for John Coistek at Seeking a New Opportunity.

Where is John Coistek based?

John Coistek is based in Ontario, New York, United States while working with Seeking a New Opportunity.

What companies has John Coistek worked for?

John Coistek has worked for Seeking A New Opportunity, Yoh Services Consultant At Harris Rf Communications, Lockheed Martin Ms2, Nortel Networks, Inc, and Lpa Software, Inc.

Who are John Coistek's colleagues at Seeking a New Opportunity?

John Coistek's colleagues at Seeking a New Opportunity include Pill Iip, Dan Ryan, John Campbell, Ala Preston, and Luke Nguyen.

How can I contact John Coistek?

You can use AeroLeads to view verified contact signals for John Coistek at Seeking a New Opportunity, including work email, phone, and LinkedIn data when available.

What schools did John Coistek attend?

John Coistek holds M.S, Computer Science from Rochester Institute Of Technology.

What skills is John Coistek known for?

John Coistek is listed with skills including Solaris, Aix, Operating Systems, Unix Shell Scripting, Scripting, C, Integration, and Unix.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.