William Schlegel
Senior Lead Developer | AI & E-commerce
Salaire / Taux journalier
Paris, France
Freelance, ouvert au CDI
Peut venir sur site
Expertises
Langues
À propos
Introduction
CTO and Lead Developer with 20+ years of experience building, scaling, and leading high‑impact software platforms. Proven track record across large‑scale e‑commerce, SaaS products, AI‑driven applications and cloud‑native architectures. Strong hands‑on engineering background combined with strategic leadership and entrepreneurial mindset.
Expérience de travail
Co founder & CTO
AEXDO
juin 2019 - Présent
7 ans 5 mois
95290 L'Isle-Adam, France
ÆXDO is developping a SaaS solution for data management related to polluted soils
Co Founder - CEO/CTO
IglooSpirit
mars 2017 - Présent
9 ans 8 mois
Douai, France
Virtual Reality production and development. Intelligent world for immersive experience.
President
SAY YAY!
mai 2014 - Présent
12 ans 6 mois
95760 Valmondois, France
delegated municipal councillor
Mairie de Valmondois
mars 2014 - Présent
12 ans 8 mois
95760 Valmondois, France
Re-Elected on the list led by Bruno Huissman
Co Founder
cedre participations
janv. 2010 - Présent
16 ans 10 mois
7620 Paris, Danemark
cedre participations is a goup of Alumni EFREI wishing to invest in projects with high potential.
Founder - Manager
WS Conseil
sept. 2009 - Présent
17 ans 2 mois
69340 Francheville, France
Investment holding and consulting for product development, strategy and investment.
IntermarchéFreelance
mars 2023 - juil. 2025
2 ans 5 mois
Hybrid
Senior Lead Developer
mars 2023 - juil. 2025
2 ans 5 mois
Hybrid
Lead developer for the Intermarché e-commerce platform (intermarche.com). - Focused on customer experience and accessibility - Developed an AI-powered voice-based shopping assistant. - Deployed systems on GCP cloud. Technologies: Next.js, TypeScript, TailwindCSS, Varnish, AI
Lead Developer
mars 2023 - mai 2025
2 ans 3 mois
Hybrid
Lead developper for e-commerce application for Intermarche (2d biggest online retailer in France, 100,000 users and 2M€ per day)
CTO
Stimshop
oct. 2015 - déc. 2024
9 ans 3 mois
7620 Paris, Danemark
I join and invest in the great team of Stimshop as CTO to help them managing their product development. Stimshop work in ultrasound products for retail marketing and adhoc product for industry.
Administrator EFREI Paris Alumni
EFREI Paris
oct. 2020 - oct. 2023
3 ans 1 mois
Paris, France
Expert-Mentor at Startups.camp
Startups.camp
nov. 2021 - déc. 2022
1 an 2 mois
Startups.camp is a 12-month acceleration program for B2B startups. We help entrepreneurs create financial and societal value by engaging our community. My role as a mentor is to drive and help entrepreneurs to scale their business. Want to know more about it ? Go on : https://www.startups.camp/
Co Founder - CEO/CTO
Skrnz
avr. 2016 - juil. 2022
6 ans 4 mois
69340 Francheville, France
Skrnz manages interactions in movie theatres
Lecturer
EFREI
juin 2013 - mars 2017
3 ans 10 mois
94800 Villejuif, France
I have a lecture about "TIC video games and new media" sector training for Master 2 students
Founder and CEO
gamific.tv
juil. 2012 - déc. 2016
4 ans 6 mois
69340 Francheville, France
gamific.tv is developping high end HbbTV application for broadcaster mixing new user experience and multiple device usage for a better TV consumption. I founded this company with 2 share holders, an HbbTV dev specialist and a mobile app specialist.
concrete equipements
janv. 1998 - oct. 2011
13 ans 10 mois
78700 Conflans-Sainte-Honorine, France
Founder - CTO
janv. 2008 - oct. 2011
3 ans 10 mois
78700 Conflans-Sainte-Honorine, France
Following the acquisition of the company by an American group, I am now in charge of the engineering department France and I participate in the development projects for new products. My service is now attached to the development division located in Columbus (Ohio, USA) that focuses on production tools.
general manager
janv. 1998 - janv. 2008
10 ans 1 mois
78700 Conflans-Sainte-Honorine, France
I am part of the team that created the company CONCRETE EQUIPEMENTS (Conflans Sainte Honorine). 5 employees at the begining, this company specializes in developing applications for trades concrete saw its sales climb steadily every year. Returned as a development engineer, I took the general direction of the company in 2004, following the death of CEO. The company at the end of 2006 14 employees for a turnover of 2.3 million €. Head of office, I coordinate and organize all software development. I'm also commercial relations with our partners to export, the company is present in a dozen countries around the world. I am also the manager of Creation & Developments Ltd., Holding holds 90% of the company's shares CONCRETE EQUIPMENT.
Development ingeneer
ERSEM
janv. 1994 - janv. 1997
3 ans 1 mois
Saint-Ouen-l'Aumône, France
System Engineer at ERSEM (Industrial Automation and weighing, 40p). Design and development of a software driver for a new dosing machine for mixing (BETOMATIC 5).
Formation
IEDE Business School
Master's degree
1991 - 1992
1 an 1 mois
EFREI - Grande école du numérique
Engineer's degree
1987 - 1991
4 ans 1 mois
EFREI - Grande école du numérique
Engineer
1986 - 1991
5 ans 1 mois
Portfolio
Site Circolab
Application web e-commerce Intermarché
Aexdo
Application mobile UMITS
