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Insights

Employee Owned Advantage CSI is the largest employee-owned custom engineering and manufacturing services and systems integration company in the United States, signaling customer trust, long-term client relationships, and potential for partner funding or co-investment opportunities.

Diverse Industry Applications Capabilities span measurement, stimulation, and test systems for both commercial and military applications, suggesting cross-selling opportunities into defense, aerospace, industrial, and consumer electronics sectors.

Mid-Scale Revenue Current revenue range of 10M–25M indicates CSI is a mid-market player with room for growth through expanded program scopes, additional product lines, or geographic expansion.

Digital & Technology Stack Adoption of modern tech like HTTP/3, Nginx, JSON-LD, and web-based management hints at openness to digital integration, data services, and IoT-enabled test systems collaborations.

Strategic Growth Channels Location in Endicott and strong engineering/manufacturing expertise position CSI for government and industry contracts; potential sales plays include system integration partnerships, turnkey test solutions, and defense-related engineering services.

Custom Systems Integration, Inc. (CSI) Tech Stack

Custom Systems Integration, Inc. (CSI) uses 8 technology products and services including gstatic.com, Amazon Route 53, yepnope.js, and more. Explore Custom Systems Integration, Inc. (CSI)'s tech stack below.

  • gstatic.com
    Content Delivery Network
  • Amazon Route 53
    Domain Name Services
  • yepnope.js
    Javascript Frameworks
  • jQuery
    Javascript Libraries
  • jQuery Mobile
    Mobile Frameworks
  • wp.cloud
    Platform As A Service
  • HTTP/3
    Web & Portal Technology
  • FitVids.js
    Web Tools And Plugins

Custom Systems Integration, Inc. (CSI)'s Email Address Formats

Custom Systems Integration, Inc. (CSI) uses at least 1 format(s):
Custom Systems Integration, Inc. (CSI) 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

What is Custom Systems Integration, Inc. (CSI)'s phone number?

Minus sign iconPlus sign icon You can contact Custom Systems Integration, Inc. (CSI)'s main corporate office by phone at
+1-607-757-****
. 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, Inc. (CSI)'s official website and social media links?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI)'s official website is customsi.com and has social profiles on LinkedIn.

How much revenue does Custom Systems Integration, Inc. (CSI) generate?

Minus sign iconPlus sign icon As of July 2026, Custom Systems Integration, Inc. (CSI)'s annual revenue is estimated to be $25M - $50M.

What is Custom Systems Integration, Inc. (CSI)'s SIC code NAICS code?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI)'s SIC code is 8711 - Engineering Services NAICS code is 335 - Electrical Equipment, Appliance, and Component Manufacturing.

How many employees does Custom Systems Integration, Inc. (CSI) have currently?

Minus sign iconPlus sign iconAs of July 2026, Custom Systems Integration, Inc. (CSI) has approximately 28 employees across 2 continents, including North AmericaAfrica. Key team members include Director Of Development And Technology: M. S.Sr. Project Engineer (hardware/Software): F. M.. Explore Custom Systems Integration, Inc. (CSI)'s employee directory with LeadIQ.

What industry does Custom Systems Integration, Inc. (CSI) belong to?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI) operates in the Appliances, Electrical, and Electronics Manufacturing industry.

What technology does Custom Systems Integration, Inc. (CSI) use?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI)'s tech stack includes gstatic.comAmazon Route 53yepnope.jsjQueryjQuery Mobilewp.cloudHTTP/3FitVids.js.

What is Custom Systems Integration, Inc. (CSI)'s email format?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI)'s email format typically follows the pattern of First.Last@customsi.com. Find more Custom Systems Integration, Inc. (CSI) email formats with LeadIQ.

When was Custom Systems Integration, Inc. (CSI) founded?

Minus sign iconPlus sign iconCustom Systems Integration, Inc. (CSI) was founded in 2001.
Custom Systems Integration, Inc. (CSI) logo

Custom Systems Integration, Inc. (CSI)

Appliances, Electrical, and Electronics ManufacturingNew York, United States11-50 Employees

Custom Systems Integration, Inc. (CSI) is an employee-owned engineering and manufacturing services and systems integration firm based in Endicott, New York. The company provides end-to-end support for measurement, stimulation, and test systems across commercial and military applications. Its operations cover projects of varying sizes within a full-service engineering and manufacturing framework.

CSI serves customers in the appliances, electrical, and electronics manufacturing sector that require integrated measurement and testing capabilities. With a relatively small to mid-sized workforce, the firm positions itself as a focused provider of customized systems and integration services within its industry.

Section iconCompany Overview

Phone number
+1-607-757-****
Website
customsi.com
SIC Code
8711 - Engineering Services
NAICS Code
335 - Electrical Equipment, Appliance, and Component Manufacturing
Founded
2001
Employees
11-50

Section iconFunding & Financials

  • $25M - $50M

    Custom Systems Integration, Inc. (CSI)'s revenue is estimated to be in the range of $25M - $50M

Section iconFunding & Financials

  • $25M - $50M

    Custom Systems Integration, Inc. (CSI)'s revenue is estimated to be in the range of $25M - $50M

Company Leadership

  • Stylized image of a person
    M. S.
    Director Of Development And Technology
    Phone icon
    Mobile Phone
  • Stylized image of a person
    F. M.
    Sr. Project Engineer (hardware/Software)
    Phone icon
    Mobile Phone

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