Senior Technology Leader with 20+ years of experience driving product-oriented engineering across startups, scale-ups, and enterprise platforms. As CTO and founder of multiple SaaS and media companies, I’ve led the design and execution of modern architectures for data-intensive, real-time, and high-availability systems. I’ve managed cross-functional engineering teams across multiple countries, developed mentoring and hiring frameworks, and implemented quality standards at scale. My recent roles include leading fullstack development for Intermarché’s e-commerce platform, building AI-powered conversational interfaces and deploying across cloud environments (GCP). At Aexdo, I oversaw architecture, international hiring, and the delivery of geospatial data systems with high security and compliance requirements. Earlier, at Gamific.tv, I pioneered connected TV applications with a focus on performance and interactive UX.

William Schlegel

Senior Technology Leader with 20+ years of experience driving product-oriented engineering across startups, scale-ups, and enterprise platforms. As CTO and founder of multiple SaaS and media companies, I’ve led the design and execution of modern architectures for data-intensive, real-time, and high-availability systems. I’ve managed cross-functional engineering teams across multiple countries, developed mentoring and hiring frameworks, and implemented quality standards at scale. My recent roles include leading fullstack development for Intermarché’s e-commerce platform, building AI-powered conversational interfaces and deploying across cloud environments (GCP). At Aexdo, I oversaw architecture, international hiring, and the delivery of geospatial data systems with high security and compliance requirements. Earlier, at Gamific.tv, I pioneered connected TV applications with a focus on performance and interactive UX.

Available to hire

Senior Technology Leader with 20+ years of experience driving product-oriented engineering across startups, scale-ups, and enterprise platforms. As CTO and founder of multiple SaaS and media companies, I’ve led the design and execution of modern architectures for data-intensive, real-time, and high-availability systems. I’ve managed cross-functional engineering teams across multiple countries, developed mentoring and hiring frameworks, and implemented quality standards at scale.

My recent roles include leading fullstack development for Intermarché’s e-commerce platform, building AI-powered conversational interfaces and deploying across cloud environments (GCP). At Aexdo, I oversaw architecture, international hiring, and the delivery of geospatial data systems with high security and compliance requirements. Earlier, at Gamific.tv, I pioneered connected TV applications with a focus on performance and interactive UX.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Lead Developer at Intermarché
June 1, 2025 - September 17, 2025
Lead developer for Intermarché’s e-commerce web application (intermarche.com). Implemented an AI-driven conversational agent enabling voice-based, click-free shopping. Deployed across GCP environments (development, testing, pre-production, production). Tech stack included Next.js, TypeScript, Sass, Varnish, Turborepo, TRPC, Prisma, Tailwind; supported data-driven features and performance optimizations.
CTO/Founder at Aexdo
March 1, 2019 - Present
Designed the technical architecture for a SaaS platform managing sovereign-certified soil decontamination data hosted on Scaleway. Wrote development documentation, recruited and managed development teams (India: 4 developers; France: additional), and oversaw complete technical project management. Built data analysis and 3D/map visualization components with Mapbox.
CEO/CTO/Founder at Igloospirit
January 1, 2022 - September 17, 2025
Co-founded Igloospirit, developing virtual reality and augmented reality applications. Created the company and established a development studio focused on 3D and video games. Led the technical team and product delivery.
CTO/Associate at Flexilims
July 1, 2017 - Present
CTO/Associate at Flexilims, a Saudi company managing analytical laboratories. Designed the architecture for SaaS laboratory management software with precise, flexible data models; supervised development, outsourcing, and day-to-day project management with Indian developers.
CTO/Associate/Investor at Stimshop
October 1, 2015 - Present
Stimshop develops ultrasonic communication technology. Participated in the investor tour during the 2015 fundraising; led strategic product development and the backoffice (ucheck.in) with Next.js and KeystoneJs; recruited and coached technical staff including a doctoral student.
Lecturer at EFREI
January 1, 2017 - September 17, 2025
Lecturer at EFREI (2013-2017). Spoke on 'Video games and new media' to M1 and M2 students, sharing industry insights and practical perspectives on technology and design.
CEO/CTO/Founder at Gamific.tv
January 1, 2016 - September 17, 2025
Created interactive connected TV applications. Recruited and led the technical team; drove business development to bring engaging digital experiences to audiences.
Investor at Cedre Participations
January 1, 2010 - Present
Member of the EFREI alumni investment fund; portfolio oversight and governance.
CTO/Consultant at WS Conseil
January 1, 2009 - Present
Investment and development consulting company. Provided 'CTO as a Service' and led technology strategy for clients.
CEO/CTO/COO at Concrete Equipments
January 1, 2011 - September 17, 2025
Software and automation for the concrete industry; led product development and manufacturing automation. Company later sold to American group Command Alkon in 2008.

Education

Computer Engineer at EFREI
January 1, 1991 - September 17, 2025
MBA in Business Creation at IEDE
January 1, 1992 - September 17, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Media & Entertainment, Education, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more

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