Philippe Liebaert

I design custom business software for companies with needs too specific for standard solutions: internal tools, operational management, optimization, scientific computing, automation, takeover or redesign of existing projects.

An engineer graduated from École Polytechnique, ENSAE, and ENSTA, with a doctorate in mechanics and modeling, I worked on advanced computer science research topics at the Ministry of Defense before founding Kallystra, a company specializing in complex software.

My role: quickly understand the real need, model the problem, design a reliable solution, and then develop it into a tool actually used by the teams.

I intervene in particular on:

• custom business software

• takeover of blocked or poorly managed projects

• algorithmic optimization and scientific computing

• internal tools for industry, logistics, services, or support functions

• software architecture and databases

• C#, SQL Server, MySQL, Flutter, web, and mobile development

Some references:

Bombardier Transport: tools deployed on 5 continents, several hundred users.

Suez / SEAAL: operational HR software in 2 months after several years of blockage.

Nokia: fiber optic network optimization.

Waterlogic France & USA: management of 20,000 water fountains, used for 8 years.

Traftor: real-time electromagnetic optimization, project followed for 14 years.

APM / F&L Ingénierie: equipment fleet management, client supported since 2012.

I work mainly on a fixed-price basis, remotely, in French and English. Travel is possible in France, Europe, and internationally depending on the projects.

If your company needs specific business software, a reliable internal tool, or a technical solution that is difficult to scope, I can help you transform the need into concrete, maintainable, and useful daily software.