Research Engineer at ESO in the Virtual Observatory Project Office. Design and implementation of VirGO, a visual browser for the ESO Science Archive Facility based on Virtual Observatory standards (C++ code based on my open source project Stellarium, design and implementation of data interfaces with astronomical archives). After 2009, design and implementation of the Survey Visualization and Monitoring Tool needed by ESO for monitoring the progress of the VISTA and VST sky surveys operations. In parallel to the software projects, involvement in the re-design of the infrastructure for dealing with complex meta-data in the ESO archive.

Research Engineer at the Paris Astronomical Observatory on the GAIA satellite of the European Space Agency. Design and implementation of the Payload Data Handling System of the satellite, design of on-board algorithms (C code, real times constraints, testing environment), definition of technical specifications and calibration procedures (Analysis of CCD images), interface with industry, writing of technical reports, presentations at international meetings. Since August 2005: design and implementation of a detailed image simulator for Gaia (Java software engineering, CCD and spacecraft instruments modeling, image processing).

Modification of my open source software Stellarium for use in planetariums produced by Digitalis Education Solutions, Inc.. Real time openGL rendering using non-linear "fisheye" projection, realistic simulation of eye adaptation to luminance (for day and night vision), very fast atmosphere rendering, user interface. See "Personal Projects" below for more info about Stellarium.