Celios Tech Stack

French IT services and digital transformation for public and private sector

Software Development Limoges, Nouvelle-Aquitaine 51–200 employees Founded 2011 Self-Owned

Celios is a mid-sized French systems integrator built around managed infrastructure, cybersecurity, and custom development. The stack reveals a hybrid enterprise environment—C#/.NET, Windows Server, SQL Server alongside Python, Docker, Kubernetes, and emerging ML tooling (Transformers, ONNX Runtime, llama.cpp)—suggesting active modernization of legacy monoliths. Heavy senior hiring (20 of 36 open roles) concentrated in engineering signals technical depth over volume scaling.

Tech Stack 114 technologies

Core StackC# Angular .NET SQL Server Python Docker Linux Windows Server Java Kubernetes Oracle MySQL Jira Confluence Active Directory Ansible Cisco Fortinet ServiceNow Windows Forms Transformers Slurm ONNX Runtime llama.cpp Unix SQL GLPI AWS WAF Git F5+84 more

What Celios Is Building

◆Challenges

Improving ux
Maintaining iso 27001 compliance
Migrating data to new platform
Automating tasks in revit
Managing complex incidents
Managing inter-application flows
Automating middleware tasks
Maintaining iso 27001 certification
Recurrent incidents
Supporting strategic financial application

▲Active Projects

Revit automation plug-in development
Core model supply chain evolution
Aps solution deployment in subsidiaries
Enterprise search engine
Deployment of network equipment
Financial application evolution
Redesign the research project quality tracking tool
Deploy a new data study deposit and tracking module
Develop an api for exchanging data with other web services
Automation of network operations

Hiring Activity

Accelerating40 roles · 25 in 30d

Department

Engineering

Ops

Security

Support

Training

Data

Product

Seniority

Senior

Mid

Junior

Intern

Manager

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About Celios

Celios provides end-to-end IT services to French public administrations and mid-market enterprises: managed infrastructure (Windows/Linux/Cisco networks), cybersecurity operations (ISO 27001 compliance), and custom software development. Founded in 2011 and headquartered in Limoges, the company operates as a self-owned independent firm. Active project portfolio spans infrastructure automation (Revit plug-ins, network operations), data modernization (platform migrations, API development), and enterprise applications (search engines, financial systems). Engineering is the primary delivery engine; ops and security teams manage compliance and incident response.

HeadquartersLimoges, Nouvelle-Aquitaine

Company Size51–200 employees

Founded2011

Hiring MarketsFrance

Frequently Asked Questions

What tech stack does Celios use?

Core stack: C#, .NET, SQL Server, Windows Server for enterprise systems; Python, Docker, Kubernetes, and AWS WAF for modern infrastructure. Also uses GLPI for IT asset management, ServiceNow for workflows, and emerging ML tools (Transformers, ONNX Runtime, llama.cpp).

What projects is Celios working on?

Active deliverables include Revit automation, supply chain system evolution, enterprise search engine, network equipment deployment, financial application modernization, and API development for inter-application data exchange.