CELESTE Tech Stack

French fiber and cloud infrastructure operator with 12,000 km private network

Telecommunications Champs-sur-Marne 501–1,000 employees Founded 2001 Partnership

CELESTE operates a privately owned fiber backbone across France and Switzerland, serving 20,000+ businesses with managed connectivity, cloud hosting, and cybersecurity. The tech stack (SD-WAN, BGP, Fortinet FortiGate, Linux) reflects infrastructure-grade networking, while pain points around lead generation, SME acquisition, and account expansion signal a sales-efficiency challenge typical of regional telecom operators competing against larger carriers. Hiring remains sparse (5 open roles, decelerating) across distributed functions, suggesting operational maturity over growth mode.

Tech Stack 12 technologies

Core StackCanva Python Go Linux LinkedIn Adobe SD-WAN BGP VRRP Fortinet FortiGate TCP/IP Excel

What CELESTE Is Building

◆Challenges

Brand image development
Lead generation
Acquiring new sme clients
Expanding existing accounts
Prospecting in assigned sector
Network migration
Complex incident resolution
Maintaining quality social dialogue
Ensuring payroll compliance

▲Active Projects

Event marketing and webinar support
Website development and seo/sea optimization
Inter-service network migration
Professional elections organization
Annual social events scheduling

Hiring Activity

Decelerating5 roles · 1 in 30d

Department

Marketing

Sales

Security

Support

Seniority

Mid

Intern

Junior

Senior

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About CELESTE

CELESTE is a French telecommunications operator providing fiber-optic connectivity, cloud services, and cybersecurity to mid-market businesses. Founded in 2001 and headquartered in Champs-sur-Marne, the company operates a proprietary fiber network spanning over 12,000 km across France and Switzerland, three ISO 27001–certified data centers (including HDS-certified health-sector facilities), and maintains regional sales presence through 15 offices. The customer base includes 20,000+ businesses, supported by a 700-person team. CELESTE extends market reach through VTX Telecom, a Swiss subsidiary, positioning itself as a localized alternative to incumbent European carriers.

HeadquartersChamps-sur-Marne

Company Size501–1,000 employees

Founded2001

Hiring MarketsFrance

Frequently Asked Questions

What telecom technologies does CELESTE use in its network?

CELESTE runs SD-WAN, BGP, VRRP, and TCP/IP protocols across Linux-based infrastructure, with Fortinet FortiGate firewalls for security. Stack signals carrier-grade routing and redundancy.

Where is CELESTE headquartered and what countries does it serve?

CELESTE is headquartered in Champs-sur-Marne, France. The company operates a private fiber network across France and Switzerland via its subsidiary VTX Telecom.

How many employees does CELESTE have?

CELESTE operates with approximately 700 experts across its 15 regional offices and supports a customer base of 20,000+ businesses.