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CNX Corporation

Chicago, IL, USA

  • Employees:
  • Minimum Project Size:
    • Ext JS,
    • Sencha Test,
    • Architect
    • JavaScript,
    • Java,
    • CSS,
    • Sass/Less,
    • JavaScript Unit Testing,
    • Cordova,
    • Git,
    • MongoDB,
    • MySQL,
    • node.js,
    • PHP,
    • SQL Server
    Contact Contractor


    CNX specializes in the development of large and medium-sized Ext JS apps for clients in a wide variety of industries. Having used Ext JS since its inception in 2007​, our experienced Chicago-based team has accrued a solid understanding of best-practice development techniques using​ ​​all aspects of ​​​the framework. In addition to custom app development, CNX also offers in-depth app review services for analyzing existing Ext JS apps that were developed​​​ either in-house by the client or by a third party other than CNX. The analysis effort results in a detailed report to the client that highlights areas where the code deviates from Ext JS best-practices, provides feedback on the UI/UX, and culminates with a list of go-forward development recommendations.

    Active Job Listings

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    1. Our company needed to implement a Business to Business solution for enabling our customers to order directly through our back end ERP application in a simple to use, web portal. With limited time to implement and inconvenient timing on all fronts, the core application was built as a joint effort at the CNX offices over a three week period and went live a month later. This would not have been possible without the deep knowledge, commitment and willingness to meet challenges by the dedicated staff at CNX. The input provided by the talented staff at CNX and the excellent functionality of the EXT JS framework were invaluable in making a complicated process appear simple and intuitive to the end users, a requirement absolutely critical to the success of the solution. I would thoroughly recommend CNX for the development of EXT JS based solutions.

      CIO, Smeg Australia (2015)

    2. In 2014 Frontier started the process of modernizing our user GUI from a green screen application into a modern HTML 5 application. After analyzing multiple options we decided that the best company and application framework for that effort was CNX’s Valence framework, which included ExtJs and a program to facilitate creating JSON API’s that ExtJs could consume.

      Working with CNX during the proof of concept was leaps and bounds better than working with any other vendor I’ve had the opportunity to work with. The resources they make available to learn and use ExtJs, such as videos, documentation and developers, were second to none and they even took the time to help with any questions and improve the POC application. Whenever I had questions they were always just a phone call away and that was even before we had purchased the framework.

      After the proof of concept Frontier decided to contract CNX to help create several applications over our back office systems. Working on these applications with CNX has been amazing. Their development staff are rare gems that have nothing but their customers best interests in mind. The speed at which they accomplish tasks is way beyond expectations. They are so skilled and efficient that we often find that the Frontier resources fall behind the CNX staff.

      If anyone is looking for ExtJs expertise I would highly recommend CNX and their team of amazing staff.

      IT Principle Lead Developer/Architect, Frontier Communications (2015)

    3. TransWorks hired CNX in October 2014 and we have been very pleased with our experience – CNX has been extremely professional and easy to work with, and has really helped to elevate the UX design at our company. If it weren’t for their abilities, we would not be where we are today in delivering a superior UX to our customer base. I would recommend CNX to any company looking for a great partner in UX design and development!

      AVP, Customer Support & Project Management, TransWorks (2014)

    4. We have partnered with CNX for over a year in the development of our new app. CNX has been a great partner; they provide strategic direction, business analysis and engineering. CNX is an extension of our team, they provide professional resources and communicate status and work with us on our successes. I fully endorse CNX and their culture and resources.

      Principal & Director of Business Development, Celera Systems LLC (2013)

    5. The CNX developers designed and developed a very intuitive Ext JS UI that integrates directly with our ERP system. This application is very user friendly and streamlines the whole requisition and purchasing system for improved efficiency. The CNX team were very ingenious and creative in their approach and design concepts. I will definitely use this great company in any future development efforts. ”

      IT manager, MP Biomedicals LLC (2013)

    6. The CNX developers designed and developed a very intuitive Java Script and back end RPG ILE interface to our ERP system. This application is very user friendly and streamlines the whole requisition and purchasing system for improved efficiency. The CNX team were very ingenious and creative in their approach and design concepts. I will definitely use this great company in any future development efforts.

      IT Manager, MP Biomedicals LLC (2013)

    7. I have been working with CNX for 6 months and it has been a great experience. From to management to developers they know technology. They are willing to take on any job with no drama! They are good communicators and very reasonable. If your looking for a flexible team with great technologist and user experience developers, these are your guys and gals.

      CTO, eChalk (2013)

    8. The CNX team has deep expertise in ExtJS. We initially hired CNX to help us with utilizing ExtJS in improving the user interface of our software product and they far exceeded our expectations in terms of the quick delivery and quality of their work. They then helped us with implementing a complex, drag-and-drop UI using ExtJS for a customer solution. CNX is easy to work with, they are highly reliable and really know what they are doing. Highly recommended.

      CTO, Adeptia, Inc. (2012)

    9. The CNX development team consistently demonstrates an ability to provide the highest quality of service. Their knowledge of ExtJS and expertise in web design and development has played an integral role in modernization of our member centric systems. The ExtJS framework is incredibly robust with new features appearing on a regular basis. Their ability to stay current with new ExtJS innovations is an asset any development shop will appreciate!! Placing the presentation layer in the hands of our ExtJS experts at CNX while we remain focused on core component innovations has proven to be a winning combination for Symmetrical Solutions and its clients.

      Partner, Symmetrical Solutions, Inc. (2009)

    10. We contracted CNX to develop a kanban dashboard app to visually track kanban signals and replenishments both intra and interplant. The project was a huge success and has since been rolled out to several of our plants. Users continually comment on the timesaving this allows. It is one of the most useful modules we have implemented to enhance our manufacturing performance and inventory goals. CNX’s innovation and understanding of our needs was a major contributor to it’s success.

      Project Manager, Klein Tools Inc (2009)

    11. The guys at CNX Corporation are fantastic with Ext JS. No matter what I get stuck on, I can send them an email or post on their support forum and I always get a correct answer by next day.

      The example code they wrote in Ext JS is terrific, gave me a huge jump start writing my own applications. I’ve attended their training class on the MVC framework and it was one of best training classes I’ve ever attended.

      Can’t say enough good things about this company and their talent.

      IT Manager/developer, Luvata (2011)

    12. The CNX developers have been hands-down experts at designing and implementing intuitive Ext JS-based business apps that interface with our ERP system — a major boon to our rapidly growing business. A few recent successes: (1) An order entry app so well-suited to our manufacturing operation that it helped reduce system training time for new customer service reps from a matter of weeks to several hours; (2) A dashboard app for sales and marketing that has made it possible to analyze heaps of product sales data without having to print a single report; (3) A drag-and-drop bill of materials maintenance app that shaved as much as 50 percent off the time it takes our engineers to create new products. I highly recommend them!

      CFO, Focal Point LLC (2010)

    13. CNX was hired to develop a new and improved billing system for our large Law Firm in downtown Chicago. As the Project Manager, I worked closely with first the primary developer and later with additional development staff. My experiences were completely positive from the development to the successful project launch. I appreciated the input CNX solicited from those impacted by the new system. CNX took all input and found ways to not only incorporate our needs but went beyond to add features and benefits. We followed standard practices with user acceptance testing and monitoring conversion. I loved this project and it had to do with two factors; working with CNX was inspiring and fun and the response from the user community. I cannot tell you the frequency with which I heard how much the end users love the new system; for it’s efficiency of design and ease of use with very little learning curve. We have additional proposals for CNX awaiting approval and development.

      Project Manager, Pierce & Associates (2010)

    14. As we have developed our applications they have been very helpful at every stage of the process. We can post a problem on there forums and they get back to very quickly for less urgent matters. For more urgent matters they respond to our e-mail’s and calls promptly. The thing though that makes it all work for us is the high level of expertise they have in ExtJs. Even the new version 4 they have mastered. This is of tremendous value as we go through the migration process.

      President/Lead Developer, Sponsorship Management Software Ltd. (2010)

    15. CNX has done an excellent job creating applications using ExtJS. CNX has very knowledgeable developers, capable of designing, building, and supporting ExtJS 3.x and 4.x (MVC) applications. Everyone I have spoken to at CNX has been very professional, friendly and willing to provide help with any ExtJS related issues.

      Programmer Analyst, Fleet Pride (2012)

    16. The CNX team assisted us in launching our pilot project for redeveloping a major application utilizing the Ext JS framework. Their knowledge and expertise was a key factor in getting the overall project established with a strong design and foundation. We anticipate putting our pilot project into production within the next several weeks. It will be on time and on budget. This would not have been possible without their excellent work.

      Senior Systems Analyst/Developer, Jackson Family Enterprises (2011)

    17. We hired CNX to custom build our first suite of apps so that we could push out a product while our internal staff came up to speed on EXT JS. I will have to say that they have the friendliest and most knowledgeable staff you could ever want to work with. Sean and John are great developers and I am amazed at how fast they turn out top quality work. We are extremely happy with our choice to use CNX .

      I.T. Director, Sanders, Inc. (2012)

    18. I spent almost a year evaluating all of the known products available to web enable our System I, and in the end I chose CNX’s Valence product as our solution. CNX’s solution is so straightforward and elegant that it is a no-brainer. Additionally, we hired CNX to custom build our first suite of apps so that we could push out a product while our internal staff came up to speed on EXT JS.
      I will have to say that they have the friendliest and most knowledgeable staff you could ever want to work with. Sean and John are great developers and I am amazed at how fast they turn out top quality work. We are extremely happy with our choice to use CNX .

      I.T. Director, Sanders, Inc. (2012)