Insights

Global Language Capabilities Rennert International is a privately-owned language education and translation provider with offerings in translation and interpretation, English and international language instruction, teen language programs, and ESOL teacher training, presenting multiple cross-sell opportunities to institutions and corporate clients seeking language skills and intercultural training.

Academic Partnerships Strong ties to academic recognition and awards (e.g., Rochester Institute of Technology Science and Math Award, Columbia College Certificate of Award) coupled with IALC membership suggest credibility with higher-ed and study abroad programs, creating opportunities for collaboration, student programs, and pathway partnerships.

Midtown NYC Presence Based in Berkeley College, Midtown Manhattan, Rennert has a prestigious urban footprint ideal for enterprise client engagement, executive language training, and on-site corporate language workshops in a major business hub.

scalable Tech Stack Utilizes a digital infrastructure including MySQL, IIS/Nginx servers, analytics and marketing tools, which can support scalable online language learning, translation platform integration, and data-driven sales outreach to institutions and organizations.

Growth Readiness Revenue in the $25M–$50M range with a 51–200 employee base positions Rennert as a mid-market provider with potential to upsell enterprise language solutions, translation services, and corporate training to similar-sized schools, colleges, and multinational companies seeking multilingual education programs.

Rennert International Tech Stack

Rennert International uses 8 technology products and services including Crazy Egg, iCIMS, html5media, and more. Explore Rennert International's tech stack below.

  • Analytics
  • Applicant Tracking Systems
  • html5media
    Audio, Video, Graphics
  • Content Delivery Network
  • Content Management System
  • jQuery
    Javascript Libraries
  • Web Analytics
  • Microsoft IIS
    Web Servers

Rennert International's Email Address Formats

Rennert International uses at least 1 format(s):
Rennert International Email FormatsExamplePercentage
FLast@rennert.comJDoe@rennert.com
90%
FirstLast@rennert.comJohnDoe@rennert.com
6%
LastF@rennert.comDoeJ@rennert.com
2%
FirstMLast@rennert.comJohnMDoe@rennert.com
2%

Frequently Asked Questions

What is Rennert International's phone number?

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You can contact Rennert International'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 Rennert International's official website and social media links?

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Rennert International's official website is rennert.com and has social profiles on LinkedIn.

How much revenue does Rennert International generate?

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As of July 2026, Rennert International's annual revenue is estimated to be $25M - $50M.

What is Rennert International's NAICS code?

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Rennert International's NAICS code is 92311 - Administration of Education Programs.

How many employees does Rennert International have currently?

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As of July 2026, Rennert International has approximately 72 employees across 3 continents, including North AmericaSouth AmericaEurope. Key team members include Deputy Head Of Teacher Training: A. C.Associate Director Of Business Development: C. K.Director Of Studies: L. D.. Explore Rennert International's employee directory with LeadIQ.

What industry does Rennert International belong to?

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Rennert International operates in the Education Administration Programs industry.

What technology does Rennert International use?

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Rennert International's tech stack includes Crazy EggiCIMShtml5mediaSucuriWordPressjQueryPiwik PRO CoreMicrosoft IIS.

What is Rennert International's email format?

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Rennert International's email format typically follows the pattern of FLast@rennert.com. Find more Rennert International email formats with LeadIQ.

When was Rennert International founded?

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Rennert International was founded in 1973.
Rennert International logo

Rennert International

Education Administration ProgramsNew York, United States51-200 Employees

Rennert International is a privately held firm focused on language education and communications, founded in 1973 by Cesar Rennert and based in New York. The company provides translation and interpretation services, English and other language instruction, teen language programs, and ESOL teacher training. It serves a global client base, helping individuals and organizations manage language learning and cross-cultural communication needs. Positioned within the education administration programs field, it is a founding member of the International Association of Language Centres, reflecting commitments to quality and ethics.

The firm operates from Berkeley College in Midtown Manhattan, placing it in the heart of New York City. In 2024, Rennert International received multiple academic recognitions, including awards from Columbia College and Rochester Institute of Technology, and recognition as a Lander University Junior Fellow.

Section iconCompany Overview

Phone number
NAICS Code
92311 - Administration of Education Programs
Founded
1973
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    Rennert International's revenue is estimated to be in the range of $25M - $50M

Section iconFunding & Financials

  • $25M - $50M

    Rennert International's revenue is estimated to be in the range of $25M - $50M

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