Insights

Custom Software Focus Castelis specializes in tailor-made software solutions across distribution, corporate services, and enterprise applications, indicating opportunities to upsell bespoke development, integrations, and CRM/ERP extensions for mid-market clients seeking customized systems.

Tech Stack Breadth Proficient across .NET, Java, LAMP and modern tools like Apache Kafka, Power BI, Microsoft Azure, and web technologies, suggesting potential for modernization projects, data analytics enablement, and cloud migrations for existing customers.

Industry Coverage Experience spans e-commerce, franchise management, employee benefits programs, CE/CCE activities, and project-centric service organizations, offering cross-sell opportunities to clients in retail, HR services, and SMB professional services.

Growth Potential Revenue range indicates a small to mid-sized growth-focused firm with room to scale; prospect discussions can target expansion into larger franchises, integrated web services with external partners, and scalable SaaS or managed services.

Data & Analytics Existing use of Power BI and data-oriented modules implies a gateway for analytics consulting, data integration, and dashboarding enhancements to improve decision-making for client operations and finance.

Castelis Tech Stack

Castelis uses 8 technology products and services including Apache Kafka, Power BI, C3.js, and more. Explore Castelis's tech stack below.

Apache Kafka

Big Data Processing

Power BI

Business Intelligence

C3.js

Charting

WordPress

Content Management System

JSON-LD

Javascript Frameworks

Microsoft Azure

Platform As A Service

JavaScript

Programming Languages

Bootstrap

UI Frameworks

Castelis Email Formats	Example	Percentage
FLast@castelis.com	JDoe@castelis.com	88%
First.Last@castelis.com	John.Doe@castelis.com	8%
FMiddleLast@castelis.com	JMichaelDoe@castelis.com	2%
First-Last@castelis.com	John-Doe@castelis.com	2%

Castelis Email Formats

Example

Percentage

FLast@castelis.com

JDoe@castelis.com

88%

First.Last@castelis.com

John.Doe@castelis.com

FMiddleLast@castelis.com

JMichaelDoe@castelis.com

First-Last@castelis.com

John-Doe@castelis.com

Frequently Asked Questions

What is Castelis's phone number?

You can contact Castelis's main corporate office by phone at

+33-1-43-90-1****

. 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 Castelis's official website and social media links?

Castelis's official website is castelis.com and has social profiles on LinkedIn.

How much revenue does Castelis generate?

As of July 2026, Castelis's annual revenue is estimated to be $1M - $10M.

What is Castelis's SIC code NAICS code?

Castelis's SIC code is 7371 - Computer Programming Services NAICS code is 541511 - Custom Computer Programming Services.

How many employees does Castelis have currently?

As of July 2026, Castelis has approximately 93 employees across 3 continents, including EuropeAsiaSouth America. Key team members include Cto (php): J. M.Founding Partner: F. B.Responsable Equipe Technique Erp Chronos: M. A.. Explore Castelis's employee directory with LeadIQ.

What industry does Castelis belong to?

Castelis operates in the IT System Custom Software Development industry.

What technology does Castelis use?

Castelis's tech stack includes Apache KafkaPower BIC3.jsWordPressJSON-LDMicrosoft AzureJavaScriptBootstrap.

What is Castelis's email format?

Castelis's email format typically follows the pattern of FLast@castelis.com. Find more Castelis email formats with LeadIQ.

When was Castelis founded?

Castelis was founded in 1999.

Castelis

Q: What is Castelis's official website and social media links?

Castelis's official website is castelis.com. Castelis has social profiles on LinkedIn.

Q: How many employees does Castelis have currently?

Castelis has approximately 93 employees.

Q: What technology does Castelis use?

Castelis's tech stack includes Google Ads, Trident AB, .NET, Adobe, Contact Form 7.

Q: What is Castelis's NAICS code?

Castelis's NAICS code is 541511 (Custom Computer Programming Services).

IT System Custom Software DevelopmentÎle-de-France, France51-200 Employees

Castelis is a mid-sized IT services company specializing in custom software development. Founded in 1999, it pursues a bespoke approach to deliver tailored applications that respond to each client's specific needs. The firm has developed industry-focused capabilities across distribution, corporate committees management, service-oriented enterprises, and broader enterprise applications, supporting processes from e-commerce and franchise management to intranet and CRM, as well as integration with accounting systems.

Its client base includes distributors, employee representative bodies, service providers, and other enterprises that require integrated software spanning CRM, production tracking and document management, as well as interfaces to accounting systems. Located in Ivry-sur-Seine, Île-de-France, Castelis positions itself as a provider of end-to-end web-based solutions that address common business needs and data management requirements.

Insights

Similar companies to Castelis

FutureSoft

AppWorks