Insights

Niche Expertise Custom Systems Integration specializes in measurement, stimulation, and test systems for both commercial and military applications, offering tailored solutions that can appeal to defense and high-tech industries seeking specialized engineering services.

Employee-Owned Advantage As the largest employee-owned company in its sector, CSI demonstrates strong internal culture and stability, which can be leveraged to build long-term partnerships with clients valuing consistency and dedicated service.

Growth Potential With a revenue range of 10 to 25 million dollars and recent market activity, there are opportunities for upselling or expanding project scopes with existing clients seeking robust and customizable system integration solutions.

Technological Stack Utilizing advanced technologies such as Nginx, HTTP/3, and modern web tools suggests CSI’s readiness to support high-performance, scalable, and secure systems, appealing to clients with demanding technical requirements.

Targeted Markets Serving both commercial and military sectors opens avenues to approach defense organizations, aerospace, and high-tech R&D firms that require precise and reliable system integration services, broadening sales prospects.

Custom Systems Integration Tech Stack

Custom Systems Integration uses 8 technology products and services including MySQL, Divi, Animate.css, and more. Explore Custom Systems Integration's tech stack below.

  • MySQL
    Database
  • Divi
    Page Builders
  • Animate.css
    UI Frameworks
  • YouTube
    Video Players
  • HTTP/3
    Web & Portal Technology
  • X-Content-Type-Options
    Web & Portal Technology
  • Nginx
    Web Servers
  • Microsoft IIS
    Web Servers

Media & News

Custom Systems Integration's Email Address Formats

Custom Systems Integration uses at least 1 format(s):
Custom Systems Integration Email FormatsExamplePercentage
First.Last@customsi.comJohn.Doe@customsi.com
77%
FLast@customsi.comJDoe@customsi.com
13%
First@customsi.comJohn@customsi.com
7%
FirstLast@customsi.comJohnDoe@customsi.com
3%

Frequently Asked Questions

Where is Custom Systems Integration's headquarters located?

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Custom Systems Integration's main headquarters is located at 1020 Perimeter Road West, Bldg. 1, Endicott, NY 13760, US. The company has employees across 2 continents, including North AmericaAfrica.

What is Custom Systems Integration's phone number?

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You can contact Custom Systems Integration's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Custom Systems Integration's official website and social media links?

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Custom Systems Integration's official website is customsi.com and has social profiles on LinkedIn.

How much revenue does Custom Systems Integration generate?

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As of October 2025, Custom Systems Integration's annual revenue is estimated to be $12M.

What is Custom Systems Integration's NAICS code?

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Custom Systems Integration's NAICS code is 335 - Electrical Equipment, Appliance, and Component Manufacturing.

How many employees does Custom Systems Integration have currently?

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As of October 2025, Custom Systems Integration has approximately 27 employees across 2 continents, including North AmericaAfrica. Key team members include Owner: E. H.Director Of Development And Technology: M. S.Project Manager: J. B.. Explore Custom Systems Integration's employee directory with LeadIQ.

What industry does Custom Systems Integration belong to?

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Custom Systems Integration operates in the Appliances, Electrical, and Electronics Manufacturing industry.

What technology does Custom Systems Integration use?

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Custom Systems Integration's tech stack includes MySQLDiviAnimate.cssYouTubeHTTP/3X-Content-Type-OptionsNginxMicrosoft IIS.

What is Custom Systems Integration's email format?

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Custom Systems Integration's email format typically follows the pattern of First.Last@customsi.com. Find more Custom Systems Integration email formats with LeadIQ.

When was Custom Systems Integration founded?

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Custom Systems Integration was founded in 2001.

Custom Systems Integration

Appliances, Electrical, and Electronics ManufacturingUnited States11-50 Employees

Custom Systems Integration Inc. (CSI) is the largest employee owned Custom Engineering and Manufacturing Services and Systems Integration company in the United States.
CSI is your full service provider for measurement, stimulation and test systems. Whether your application is commercial or military, CSI can help you with your next project, regardless of the size.

Section iconCompany Overview

Headquarters
1020 Perimeter Road West, Bldg. 1, Endicott, NY 13760, US
Phone number
NAICS Code
335 - Electrical Equipment, Appliance, and Component Manufacturing
Founded
2001
Employees
11-50

Section iconMedia & News

Section iconFunding & Financials

  • $10M$25M

    Custom Systems Integration's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Custom Systems Integration's revenue is estimated to be in the range of $10M$25M

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