Sylvain Leroy
Specialist Solution Architect - Migration And Application Modernisation
Épalinges, Vaud, Switzerland
Summary
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Senior🎓
Top SchoolSylvain Leroy is a specialist Solution Architect focused on cloud migration and application modernization with 12 years of hands-on experience across startups, consulting and enterprise environments. Based in Vaud, Switzerland, he currently helps AWS customers build business cases, design architectures, run POCs and optimize costs while drawing on a decade-plus track record automating legacy software migrations. Founder of Byoskill and former CTO/CTO-adjacent roles at Metrixware, Tocea and Faveeo, he blends software craftsmanship, automatic code transformation expertise and practical DevOps to accelerate MVPs and safe modernization at scale. His background in compilers and Java code analysis (INRIA, research masters) informs a rare depth in automated refactoring and legacy-to-cloud transformation techniques. Comfortable leading small teams or training engineers, he also delivers Gradle/Groovy/JUnit and Quarkus trainings to spread best practices. He pairs entrepreneurial drive with a pragmatic tool-first approach to reduce technical debt and unlock business value.
12 years of coding experience
14 years of employment as a software developer
Research Master's degree in computer scicences CompilationArchitecture Systems, Research Master's degree in computer scicences CompilationArchitecture Systems at Université de Rennes IBaccalauréat, Baccalauréat at Notre Dame des maraisMaster 2 Recherche Informatique Compiler and architecture, Master 2 Recherche Informatique Compiler and architecture at ISTICDiplôme universitaire de technologie (DUT) Sciences informatiques et de l''information et services apparentés, Diplôme universitaire de technologie (DUT) Sciences informatiques et de l''information et services apparentés at IUT Lannion
French, English, Russian, German
Github Skills (136)
javascript10
angular10
eslint10
angularjs10
sonarqube10
sonarqube-plugin10
cqrs9
linter9
vuejs29
gradle-plugin9
junit-runner9
factory9
spring9
lcov9
pdf9
Programming languages (8)
Github contributions (5)
sleroy/gcb-telegram-build
Dec 2019 - Nov 2020
Google Cloud Build Telegram notification bot
Contributions:4 commits, 1 PR, 5 pushes in 11 months
google-cloud-buildtelegram
sleroy/cxf-example-migration-springmvc
Nov 2020 - Sep 2025
This project demonstrates how to build a simple CXF webservice using SOAP (JAX-WS) or REST (JAX-RS)
Contributions:30 PRs, 58 pushes, 58 branches in 4 years 11 months
webservicejax-wssoapwebclientsling
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