Located in Plano, TX, ESI is always looking for the very best people to join our team of 100 knowledge workers to help us design, develop, manufacture, sell and support our portfolio of reliable, quality products and services.  

Check out our current openings and see if you believe you are the right fit for ESI.


Here is a quick overview of our benefits

  • Competitive salaries — ESI offers highly competitive compensation based on experience and background.
  • Vacation — ESI employees get two weeks of paid vacation per year after Year One, three weeks per year after Year Five, and four weeks per year after Year Ten.
  • Matched 401K Plan — Progressive 401K Plan with many different mutual funds currently available. Employees may contribute up to 15% of salary toward the Plan and the company will match contributions at a rate of 25 cents on the dollar up to the 6% level.
  • Educational assistance program — ESI encourages employees to better themselves through higher education. Toward this end, ESI will reimburse employees for educational expenses (based on academic performance) related to the employee’s position or toward a degree plan.
  • Excellent medical and dental benefits for the employee and family.
Current openings
  • Technical Support

  • Please refer to job 201318 when submitting your résumé.

    The Technical Support III (L3) position is a designated product, software and services support specialist in ESI’s Customer Services organization. The key role of the Customer Services organization is to field Reseller product inquiries which include trouble reporting and issue isolation/identification and correction. Specifically, the role of the L3 Support Technician is to provide an elevated/escalated role of support to internal and external customers.

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  • Please refer to job 201408 when submitting your résumé.

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  • Sales

  • Please refer to job 201402 when submitting your résumé.

    We are looking for energetic Inside Sales Representatives for Cloud Services to join our team.  

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  • Please refer to job 201427 when submitting your résumé.

    We are currently seeking an expert Major Account Sales Representative to join our national sales team. This position acts as the lead representative focused on developing major accounts within targeted regional cities. This person will be responsible for building and nurturing relationships with mid-sized to large enterprises, leveraging ESI’s complete portfolio of Cloud services. This position requires an aggressive, intelligent, self-motivated individual that is focused on helping customers create the best communication solution for their businesses.

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  • Please refer to job 201426 when submitting your résumé.

    We are currently seeking a Sales Engineer to join our national sales team. This position acts as the technical representative during the pre-sales process and is responsible for working with our regional sales managers and business development team as the primary technical advisor alongside our network of certified partners. The Sales Engineer will provide support for partner and customer presentations, demonstrate products and services, advise on technical requirements of customer implementations, and participate in sales events and other marketing activities to drive partner recruitment. An ideal candidate must be self-motivated with a proven track record in Cloud, SAS, CAS, MPLS, SBC, last mile, and IAD technologies, and must be comfortable in a fast-paced business environment.

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  • Engineering

  • Please refer to job 201310 when submitting your résumé.

    If you are a talented mobile applications developer, we want to talk to you! ESI is looking for mobile applications developers to join our R&D organization. This position will help build and maintain ESI’s smartphone and tablet applications. (Local candidates only. H1B sponsorship is not available at this time.)

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  • Please refer to job 201501 when submitting your résumé.

    Today’s communications landscape is about more than features, technology, or design; the applications of tomorrow are driven by simple, contextual experiences. ESI is looking for a visionary user experience/user interface architect to join our product development team to power those experiences. The Senior UX/UI Architect reports to the Vice President of Product Management and Development, and leads the Web and mobile development chapters to create cloud communications applications. More than engineer, UI designer, or subject matter expert, you’re expected to be a seasoned leader who works with product owners to define and evangelize the user experience, then roll up your sleeves and join your team in creating beautiful, powerful and addictive applications.

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  • Quality

  • We are looking for a passionate Quality Assurance Lead who is excited about joining a diverse team of skilled testers.

    As the lead for the ESI QA team, you will spend a large part of your time creating test strategies and writing test plans to validate ESI products. You will also coordinate the team and project activities for which you will work closely with the product managers and engineers. You will work closely with the QA Manager to support quality initiatives and improve processes. You will be part of an ambitious team of diverse backgrounds and skills.

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ESI named an AHA Fit-Friendly Gold Worksite for 2013
ESI named an AHA Fit-Friendly Gold Worksite for 2013

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