Our vision is to use UML/SysML models to define specifications and validate them collaboratively with stakeholders through a functional digital mock-up. From this vision came the name CIL4Sys: Customer In the Loop for Systems Engineering.

Second-year students are working on their innovation project with us. Observing them at work, we discover an approach that enables effective modeling from day one — with no prior experience needed.

Following an evaluation of alternatives, we decide to build on web technologies to create the application Sim4Sys-Virtual-Bench that runs directly in web browsers and can be deployed as SaaS

To select the modeling tools enabling customization and code generation for executing specifications within the functional digital mock-up, we benchmarked several software solutions. Initially, we chose IBM Rhapsody and PTC Modeler as the foundation for developing Sim4Sys-Designer.

To assess whether our proposed ‘Customer in the Loop’ approach is truly innovative, we conduct face-to-face interviews with industrial companies to understand their methods and tools for writing and verifying functional specifications.

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The power of functional simulation within the digital mock-up at the concept stage becomes clear: the early identification of key scenarios accelerates convergence toward a robust design.

The proposal is to develop a Sim4Sys variant based on the Open Source software Papyrus, with the goal of accelerating innovation in smart mobility.

CIL4Sys’s main office moves from the CentraleSupélec incubator to the Télécom ParisTech incubator. This transition provides the opportunity to collaborate with Télécom ParisTech labs on applying AI reinforcement learning to traffic management.

An on-site competition is organized by an automotive OEM to compare a traditional approach (specifications written with MS Word) against a model-based specification using Sim4Sys. After one week of work, the document delivered by a single CIL4Sys engineer achieves a quality rating 30% higher than the document produced by a two-engineer team from another company.

Since its early days, CIL4Sys has used autonomous** valet parking** as a guiding thread. We showcase the feature in action on a small scale with a tabletop car mockup and a ceiling-mounted camera detecting parking slots in our office.

Thanks to Tunisia’s high level of engineering education and the supportive administration welcoming French companies, the newly created subsidiary can quickly become an efficient right hand to its French parent company.

In partnership with logistics experts and using the Sim4Sys toolchain, CIL4Sys created a digital platform that simulates urban deliveries across multiple modes of transport — from trucks and cargo bikes to trams and boats. The platform is marketed by SquareMiles, where CIL4Sys is a 25% shareholder.

Hub4Sys is a web platform where Creative Commons projects, designed with the free version of Sim4Sys, can be shared with the community.

Gartner acknowledges CIL4Sys as a potential future player in the Software Engineering and Digital Manufacturing Hype Cycles.

Vietsol, a Vietnamese engineering company, has recognized the value of our ‘Customer in the Loop’ approach, and we have signed an agreement appointing Vietsol as the distributor of Sim4Sys in Asia.

The accreditation granted by the Ministry of Higher Education and Research recognizes your company’s ability to carry out R&D work on behalf of clients for the period 2024, 2025, and 2026.

The Paris office of CIL4Sys Engineering obtains Qualiopi certification for compliance with the quality framework for its training activities, covering the period from October 15, 2024 to October 14, 2027.

CIL4Sys engineers pass INCOSE exam and get ASEP and CSEP certificates.