> Markdown version of the English résumé page. Canonical source: [English résumé](https://sebastien.rigaux.be/en) # Sébastien Rigaux > Sébastien Rigaux is a CTO and Tech Lead near Liège, Belgium. Software architecture, web and mobile products, AI transition and CTO as a Service. CTO · Tech Lead Software architecture · Engineering leadership · Web and mobile products [Browse my tech watch](/en/tech-watch)[Download my résumé (PDF)](/pdf/Sebastien-Rigaux-CV-EN.pdf) With 14 years of experience in web and mobile, I connect technical vision, architecture and hands-on delivery. As a CTO and Tech Lead, I help teams take products from idea to launch. Today, I drive the transition to AI, support engineering teams and help clients make technology decisions through CTO as a Service engagements. At Microsoft in Vancouver, I led the Voicemail team for Teams and Skype for Business on a platform handling millions of messages a day. Self-taught and close to the code, I also keep up with React, frontend development, C# and Kubernetes. Outside work, I spend time with my family, travel, go out with friends, and enjoy field hockey, kitesurfing and padel. ## Contact Visé, Belgium [+32 476 42 08 48](tel:+32476420848) [sebastien.rigaux.be](https://sebastien.rigaux.be) ## Find me online * [Github/ srigaux](https://github.com/srigaux) * [Facebook/ srigaux](https://facebook.com/srigaux) * [Linkedin/ sebastien-rigaux](https://linkedin.com/in/sebastien-rigaux) * [Twitter/ rigauxse](https://twitter.com/rigauxse) * [Instagram/ rigauxse](https://www.instagram.com/rigauxse/) ## Professional experience 1. 2016 – present ### Chief Technology Officer [djm digital S.A.](https://djmdigital.be/fr/) · Liège, Belgium * Lead the technology strategy of a company with around 40 employees and support its development teams from idea to launch. * Set technical direction for a portfolio of dozens of web and mobile apps, thousands of websites, dozens of online stores and complete digital solutions. * Drive the transition to AI: explore use cases, select tools, train teams and automate internal workflows. * Bring AI into products and build client solutions, including AI-powered telephone agents. * Advise clients on architecture through CTO as a Service engagements, conduct audits and risk assessments, and support their teams. * Prototype new ideas, contribute to product development and oversee server infrastructure. 2. 2020 – 2021 ### Software Engineer II · Voicemail [Microsoft](https://blogs.microsoft.com/vancouver/) · Vancouver, BC, Canada * Led the Voicemail team for Microsoft Teams and Skype for Business, with services processing millions of voicemails each day. * Helped scale voicemail services as Teams usage surged during the COVID-19 pandemic. * Contributed to modernizing and containerizing existing services as the platform evolved. * Integrated neural-voice text-to-speech (TTS), speech-to-text (STT), IVR flows and AI-powered automatic translation. 3. 2015 – 2016 ### Chief Technology Officer · Mobile [djm digital S.A.](https://djmdigital.be/fr/) · Liège, Belgium * Led a team of around ten and organized the mobile and .NET API/backend groups. * Set the architecture and selected technologies for several iOS and Android business applications, including Xamarin-based apps, and their .NET APIs. * Scoped client needs, turned requirements into specifications and guided delivery from concept to launch. * Built end-to-end consumer-facing solutions for major Belgian public and sports organizations, spanning multiple applications and serving thousands of people each month. * One of these projects also included real-time IoT capabilities. 4. 2012 – 2015 ### iOS & Web Developer [djm digital S.A.](https://djmdigital.be/fr/) · Liège, Belgium * Worked across the full iOS project lifecycle: research, planning, development, launch and client support. * Built native mobile applications tailored to each client’s needs. * Tracked project milestones and reported progress to leadership every week. 5. 2012 – 2012 ### iOS Developer Intern [djm digital S.A.](https://djmdigital.be/fr/) · Liège, Belgium * Developed an iPhone app and APIs. * Also built web applications using ASP.NET MVC. ## Education 1. Sept. 2013 – Jun. 2015 ### [HEC](https://www.hec.uliege.be/) & [University of Liège – ULiège](https://www.fsa.uliege.be/cms/c_3112656/fr/fsa) (BELGIUM) Master of Science in Computer Science, Management track Graduated with Honors 2. Sept. 2012 – Jun. 2013 ### [University of Liège – ULiège](https://www.fsa.uliege.be/cms/c_3112656/fr/fsa) (BELGIUM) Bachelor of Science in Computer Science Graduated with Honors 3. Sept. 2010 – Jun. 2012 ### [The HEI of the Province of Liège – INPRES](https://www.hepl.be/fr/informatique) (BELGIUM) Bachelor in Management Computing Graduated with Honors 4. Sept. 2007 – Jun. 2010 ### [University of Liège – ULiège](https://www.fsa.uliege.be/cms/c_3112656/fr/fsa) (BELGIUM) Bachelor of Science in Computer Science First two years of bachelor's degree in computer science at the University of Liège (ULiège) ## Skills ### Languages * French — Native * English — Good working level * Dutch — Basic ### Technical expertise * #### Technical leadership & CTO as a Service Architecture, audits, risk assessment, technical advice and team support. * #### Web & mobile engineering Frontend, backend, APIs and native iOS applications. * #### AI transition & automation Use-case discovery, tool selection, training, product integration and AI-powered telephone agents. * #### Communication at scale Microsoft Teams and Skype for Business voicemail services processing millions of messages a day. * #### Speech technology & applied AI Neural-voice TTS, STT, IVR and automatic translation. ### Topics I follow * [AI developments](/en/tech-watch/tags/ai) * [React](/en/tech-watch/tags/react) * Frontend development * [C#](/en/tech-watch/tags/c-sharp) * Engineering leadership * [Kubernetes](/en/tech-watch/tags/kubernetes)