Insights

Cybersecurity focus Cyllene emphasizes cybersecurity and training as part of its service suite, signaling a potential opportunity to upsell security assessment, managed security services, and staff training for clients prioritizing risk reduction.

Digital transformation The firm highlights end-to-end digital transformation through human-centric approaches, suggesting cross-sell opportunities in cloud migration, architecture definition, and data analytics to clients seeking modernization.

R&D and innovation With expertise spanning architectures, cloud hosting, devops (GitOps), AI tooling (ChatGPT), and data intelligence, Cyllene positions to offer advanced modernization projects, AI enablement, and secure DevOps integrations.

Energaïa showcase Recent unveiling of the Cyllene Box at Energaïa 2025 indicates a capability to deliver domain-specific hardware or edge/connected solutions, presenting cross-sell in IoT, edge computing, and cybersecurity hardware.

Growth readiness Revenue in the $1M–$10M range and a focus on professional growth, training, and senior-junior mentoring point to scalable services for mid-market clients, with expansion potential into larger projects and managed services.

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Cyllene Tech Stack

Cyllene uses 8 technology products and services including LinkedIn Ads, Microsoft Clarity, Microsoft SQL Server, and more. Explore Cyllene's tech stack below.

LinkedIn Ads
Advertising
Microsoft Clarity
Analytics
Microsoft SQL Server
Database
Argo CD
Devops
Google Workspace
Email
ChatGPT
Generative Ai
Microsoft Azure
Platform As A Service
Piwik PRO Core
Web Analytics

Media & News

Cyllene Group attended event Energaïa trade show on Dec 1st '25.
In response to rising cyber risks, Cyllene unveiled its latest device at the Energaïa trade show in December 2025: the Cyllene Box, also known as the RC-DC4/5G.
Jan 20, 2026 | www.pv-magazine.com

Cyllene's Email Address Formats

Cyllene uses at least 2 email formats:

Cyllene Email Formats	Example	Percentage
First.Last@groupe-cyllene.com	John.Doe@groupe-cyllene.com	99%
First.Middle@groupe-cyllene.com	John.Michael@groupe-cyllene.com	1%

Frequently Asked Questions

What is Cyllene's official website and social media links?

Cyllene's official website is groupe-cyllene.com and has social profiles on LinkedIn.

How much revenue does Cyllene generate?

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

What is Cyllene's NAICS code?

Cyllene's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Cyllene have currently?

As of August 2026, Cyllene has approximately 294 employees across 1 continents, including Europe. Key team members include Head Of Strategic Alliances And Partnership: O. M., Directeur Général: O. P. and Directeur Général Adjoint Finances: A. D. V. Explore Cyllene's employee directory with LeadIQ.

What industry does Cyllene belong to?

Cyllene operates in the IT Services and IT Consulting industry.

What technology does Cyllene use?

Cyllene's tech stack includes LinkedIn Ads, Microsoft Clarity, Microsoft SQL Server, Argo CD, Google Workspace, ChatGPT, Microsoft Azure and Piwik PRO Core.

What is Cyllene's email format?

Cyllene's email format typically follows the pattern of First.Last@groupe-cyllene.com. Find more Cyllene email formats with LeadIQ.

When was Cyllene founded?

Cyllene was founded in 1986.

Cyllene

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

Cyllene's official website is groupe-cyllene.com. Cyllene has social profiles on LinkedIn.

Q: How many employees does Cyllene have currently?

Cyllene has approximately 294 employees.

Q: What technology does Cyllene use?

Cyllene's tech stack includes Nginx, Yoast SEO, Google Workspace, Google Fonts API, Ubuntu.

Q: What is Cyllene's NAICS code?

Cyllene's NAICS code is 5415 (Computer Systems Design and Related Services).

IT Services and IT ConsultingÎle-de-France, France201-500 Employees

Cyllene is a mid-sized IT services and consulting firm based in Paris, Île-de-France, employing hundreds of professionals. It provides a full spectrum of capabilities, including advisory services, architecture definitions, hosting and managed services, cybersecurity and training, deployment of applicative and web technologies, and data intelligence and analytics.

The company serves organizations pursuing digital transformation by delivering integrated IT support across strategy, architecture, operations and analytics. In December 2025, Cyllene unveiled the Cyllene Box RC-DC4/5G at the Energaïa trade show in response to rising cyber risks. The firm also participated in Energaïa at that time, reflecting ongoing engagement with industry events.