Paul-guillaume Déjardin
Lead Software Engineer at Hymaia
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolPaul-guillaume Déjardin is a Lead Software Engineer with 11 years of experience, currently heading engineering efforts at Hymaia and previously serving as a consultant manager at Xebia France on high-profile missions for clients like SGCIB and Betclic. He specializes in functional programming and architecting cloud-native systems using Scala, Kotlin, ZIO, and modern AWS/GCP patterns, with hands-on experience in DDD and Hexagonal Architecture. Known for bridging domain knowledge and engineering craft, he has led platform refactors, KYC and financial simulation projects, and shaped testing/SRE practices across teams. Based in Paris, he pairs technical leadership with practical implementation—often taking developer-centric roles that move from architecture to production code—and has a track record of introducing robust patterns and tech stacks in complex enterprise contexts.
11 years of coding experience
7 years of employment as a software developer
Bac+5, Informatique, Bac+5, Informatique at AFCEPF
Github Skills (59)
react-boilerplate10
scaffolding10
zero-configuration10
redux10
build-tools10
developer-tools10
create-react-app10
react10
redux-saga9
websocket9
styled-components9
immer9
http-server9
streaming9
react-intl9
Programming languages (7)
Github contributions (5)
pgdejardin/eslint-config-nodejs
Jul 2016 - Jun 2017
Contributions:3 releases, 19 commits, 12 pushes in 10 months
xebia-france/moisdujs-jspm
May 2016 - May 2016
Contributions:16 commits, 7 pushes, 11 branches in 13 days
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