David Guillermain

David Guillermain is a professional in the tech or startup industry, specifically serving as the Co-founder and Head of Sales at Javelo. While I can confirm his professional role based on the information provided, I do not have comprehensive details about his specific background or professional journey beyond this basic description. His LinkedIn profile (username davidguillermain) would likely provide more in-depth information about his professional experience and career trajectory.

For more precise details about his professional background, education, or specific achievements, I recommend directly reviewing his LinkedIn profile or the company website for Javelo.