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Johnie Karr Email & Phone Number

Empowering Businesses Through Seamless IT Solutions at London Technology Services, LLC
Location: London, Kentucky, United States 12 work roles 1 school
1 work email found @jackhenry.com 2 phones found area 606 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email j****@jackhenry.com
Direct phone (606) ***-****
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Role
Empowering Businesses Through Seamless IT Solutions
Location
London, Kentucky, United States

Who is Johnie Karr? Overview

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Quick answer

Johnie Karr is listed as Empowering Businesses Through Seamless IT Solutions at London Technology Services, LLC, based in London, Kentucky, United States. AeroLeads shows a work email signal at jackhenry.com, phone signal with area code 606, and a matched LinkedIn profile for Johnie Karr.

Johnie Karr previously worked as Partner, Co-Founder at London Technology Services, Llc and Backend Developer at Curbio. Johnie Karr holds Associate'S Degree, Computer Information Sciences from Cowley College.

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{first_initial}{last}@jackhenry.com
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Profile bio

About Johnie Karr

I specialize in the development of web applications, desktop applications, and console applications using ASP.NET Framework and ASP.NET Core MVC and WebAPI using C# and Visual Basic. I often use Regular Expressions, Entity Framework, Linq to SQL (as well as Linq to XML and Linq to Entities), T-Sql, XML, CSS, JSON, JavaScript, HTML/XHTML, and MS SQL Server.For desktop and console applications, I have used ClickOnce or Inno Setup for deployment.I have experience both working alone and working on a team. I have source code repository experience with Subversion, TFS 2010, GIT using Azure DevOps, and GIT using GitHub.I use Azure DevOps for CI/CD.I also have (well, had) a couple apps in the Windows Phone store, and I'm interested in adding some to the GooglePlay and iOS play stores.I've been working from home successfully since 2012.

Listed skills include Asp.Net, Vb.Net, .Net, C#, and 46 others.

Current workplace

Johnie Karr's current company

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London Technology Services, LLC
London Technology Services, Llc
Empowering Businesses Through Seamless IT Solutions
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12 roles · 22 years

Johnie Karr work experience

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

Partner, Co-Founder

Current

Build custom software to meet client needsGeneral computer repairSmall network setupVoIP Services Licensing and Hardware ProcurementWork with clients in residential and commercial environmentsOffer general computer/technology related advice/solutions

Mar 2015 - Present

Backend Developer

Potomac, Maryland, Us

Using C#, .netCore, Azure Functions, PetaPoco, and EntityFramework, and an Azure SQL backend, I collaborated and worked with a diverse, remote team to continue building and enhancing the api for the Curbio Agent Mobile App. I worked closely with third party partners to integrate into our system, but my largest contribution was the work I did for the Real Time Sales Desk.I used GIT on a daily basis to track my work, and I built out many of the api endpoints in a Postman Collection, which I shared with other developers, QA, and production support.

Jul 2023 - Dec 2023

Sr. Back-End Software Engineer

New York, Ny, Us

I worked as a Sr. Backend Engineer for a leading financial and mortgage institution. I primarily worked in .net Core writing in C#.

Oct 2022 - Jul 2023

Senior Software Engineer

Monett, Missouri, Us

Using C# in asp.net framework and asp.net Core, I build APIs to support several services on the Treasury Management team: including ACH Transfers and International Wires. Technologies involved include asp.net framework, asp.net Core, Entity Framework, Dependency Injection, and Azure DevOps.

Nov 2021 - Oct 2022

Senior Software Engineer

Louisville, Ky, Us

I started my time at ScholarRx by completing the initial rebuild of the customer service tools using ASP.NET Core (MVC) in C#. I led two other developers in the design and development of the rebuild for the tooling for the editorial team. This was used internally by full-time editorial staff members, and externally (and globally) by part-time and volunteer editorial members. Post-launch I provided on-going support, training, feature enhancements, and bug fixes.The tools for editorial comprised of a .net Core MVC application, several console applications, and .net Core Web API.I worked as the primary back-end developer for the company's newest and highest priority product, RxBricks. My role with RxBricks involved building out the legacy MVP brick management tool (.net Core MVC), and then building out the api layer using .net Core Web API.My responsibilities also included importing the digital version of the text book each year; working closely with the business to gather and tune requirements; working closely with QA to ensure as few bugs went to production as possible; assisting the team with monthly Azure deployments; providing general support and special projects as needed to the editorial team; assisting DevOps with the management of Azure Streaming Services and Azure CDN.Besides Azure Streaming Services and Azure CDN, all projects were built in .net Core with an Azure SQL database, heavy utilization of Entity Framework Core, MVC and Web API, Azure DevOps and full CD/CI.

Jun 2017 - Nov 2021

Asp.Net Mvc Developer

Arlington, Us

I worked on internal and internationally public facing web applications using ASP.NET MVC, and ASP.NET WebApi with a SQL Server back-end. I utilized my programming expertise to provide feedback to management regarding the use of new technology and integration within our new systems.

Mar 2015 - Jun 2017

Software Engineer Ii

Frankfort, Kentucky, Us

I was a software engineer and team lead for one of the agencies largest projects, which contained several asp.net web applications (for internal and external use), and one very large windows desktop application (for internal use). I used VB.net, C#.net, asp.net, and MVC4 with Razor syntax. I utilized traditional ADO.net along with LINQ to SQL and Entity Framework 5. Projects also included third party tools from Telerik and Infragistics. The project used TFS2010 Build Services, which I managed, and have created custom workflow activities for.All development was done using an agile model. I successfully lead my team's migration from SQL Server 2005 to SQL Server 2008R2.I conceptualized and architected a major piece of the project, which was nominated for an award for the 2014 NCSHA conference.Along with this project, I had some TFS Admin responsibilities.

May 2012 - Mar 2015

Consultant

Progamming/Computer Consultant

Build custom software to meet client needsGeneral computer repairSmall network setupWork with clients in residential and commercial environmentsOffer general computer/technology related advice/solutions

2005 - Mar 2015

Software Developer

Frankfort, Ky, Us

Developed and maintained desktop applications using .net (C# and VB)Determined specific software needs of internal customersBuilt databases to support applicationsConverted VB6 applications to .net

May 2011 - Apr 2012

Associate Software Engineer

Atlanta, Ga, Us

I developed and maintained web-based and desktop applications using .NET (C#). ASP.net, MVC, IIS 6, and IIS 7 were used for web-applications. Deployment of desktop applications was done with ClickOnce. The database back-end was mostly SQL Server 2008R2, however, SQL Server 2000, SQL Server 2005 were also used. Many applications read data from our corporate Oracle database, and on occasion a MySQL database stored at corporate. Subversion was used for the source code repository. In this role, I also assisted our Business Analysts in requirements gathering.

Feb 2010 - May 2011

Communications Specialist

Atlanta, Ga, Us

I was responsible for keeping technicians informed of field impacting news and events. In order to do this, I built and maintained BlackBerry friendly Field Operations Websites (~80% of my job) using Classic ASP and SQL Server 2000 and 2005. In this role, I built solutions to support the field managers in their daily assignments, including a meeting management tool. I also provided automated scripting support for our analysts and assumed minor reporting responsibilities.

Nov 2007 - Feb 2010

Field Service Representative Iii On Service Improvement Through Excellence Team

Atlanta, Ga, Us

Installed and troubleshot video, high speed internet, and telephone productsPerformed general customer service and retentionReported problems found on job site

May 2005 - Nov 2007
1 education record

Johnie Karr education

  • Cowley College
    Cowley College
    Computer Information Sciences
FAQ

Frequently asked questions about Johnie Karr

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

What company does Johnie Karr work for?

Johnie Karr works for London Technology Services, LLC.

What is Johnie Karr's role at London Technology Services, LLC?

Johnie Karr is listed as Empowering Businesses Through Seamless IT Solutions at London Technology Services, LLC.

What is Johnie Karr's email address?

AeroLeads has found 1 work email signal at @jackhenry.com for Johnie Karr at London Technology Services, LLC.

What is Johnie Karr's phone number?

AeroLeads has found 2 phone signal(s) with area code 606 for Johnie Karr at London Technology Services, LLC.

Where is Johnie Karr based?

Johnie Karr is based in London, Kentucky, United States while working with London Technology Services, LLC.

What companies has Johnie Karr worked for?

Johnie Karr has worked for London Technology Services, Llc, Curbio, Ci&T, Jack Henry & Associates, and Scholarrx.

How can I contact Johnie Karr?

You can use AeroLeads to view verified contact signals for Johnie Karr at London Technology Services, LLC, including work email, phone, and LinkedIn data when available.

What schools did Johnie Karr attend?

Johnie Karr holds Associate'S Degree, Computer Information Sciences from Cowley College.

What skills is Johnie Karr known for?

Johnie Karr is listed with skills including Asp.Net, Vb.Net, .Net, C#, Databases, T Sql, Visual Studio, and Microsoft Sql Server.

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