Joan Hernandez
Software Engineer at Droids4dev
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolJoan Hernandez is a seasoned mobile software engineer with 11 years of experience specializing in Android development and a track record of shipping impactful product and technical work across startups and scale-ups from Barcelona. He co-founded Droids4Dev and has led major Android initiatives at companies like Badi, Wallapop and Skyscanner, including BDUI implementations that enabled design changes without app releases and marketing integrations that cut time-to-market from weeks to hours. Joan consistently drives engineering improvements—leading testing and Kotlin migrations that halved bug rates and accelerated experimentation cycles—and has hands-on experience across Clean Architecture, Retrofit, Dagger and CI tooling. As a long-time GDG Barcelona organizer he blends community leadership with product-focused engineering, and his background includes refactoring acquired products to support new business models and in-app purchases.
11 years of coding experience
18 years of employment as a software developer
Java programmer-analyst, Java programmer-analyst at ÉlogosIngeniero informatica, Ingeniero informatica at Universitat Autònoma de Barcelona
Stackoverflow
21reputation
2kreached
3answers
1question
Github Skills (32)
python10
ormlite9
asyncio9
kotlin9
mqtt9
automation9
privacy9
home-assistant9
android-library9
iot9
home-automation9
raspberry-pi9
garden8
android8
internet-of-things8
Programming languages (3)
Github contributions (5)
Nescafemix/hintcase
May 2016 - Nov 2016
Contributions:48 commits, 22 PRs, 21 pushes in 6 months
android-libraryandroidhintskotlinreally
GDGBarcelona/zeppelin
Jan 2015 - Oct 2015
Contributions:157 pushes in 8 months
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