Daniel Casanueva
Open Source Developer at Self-employed
Greater Málaga Metropolitan Area Spain
Summary
🤩
Rockstar🎓
Top SchoolDaniel Casanueva is an experienced functional programmer and open source developer with 13 years of engineering experience and a strong mathematical background. Based in Málaga, he specializes in type-safe Haskell back-end development, contributing to prominent projects like the Yesod web framework and the widely used aeson JSON library to extend type support and template-haskell compatibility. He writes clear, well-organized code and has produced educational Haskell tutorials, reflecting both practical engineering and teaching aptitude. As a long-term self-employed contributor, he combines research-level mathematical insight with hands-on implementation, often tackling subtle type-system and serialization edge cases that improve library robustness.
13 years of coding experience
1 year of employment as a software developer
Licentiate degree, Mathematics, Licentiate degree, Mathematics at Universidad de MálagaBachelor's degree, Mathematics, Bachelor's degree, Mathematics at Georgia Southern UniversityOnline Course, Algorithms: Design and Analysis, Online Course, Algorithms: Design and Analysis at Stanford University
English, Spanish
Github Skills (11)
json10
deserialization10
web-framework10
yesod10
data-serialization10
template-haskell10
haskell10
serialization10
testing9
functional-programming9
type-system9
Programming languages (11)
Github contributions (5)
haskell/aeson
Jun 2013 - Sep 2017
A fast Haskell JSON library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 2 PRs, 3 comments in 4 years 3 months
Contributions summary:Daniel primarily contributed to the `aeson` library, focusing on enhancing JSON serialization and deserialization capabilities. They implemented `FromJSON` and `ToJSON` instances for the `Version` and `CTime` types, expanding the library's data type support. The user also added a test suite for the `Version` type, ensuring proper round-trip conversions. Finally, they addressed a parsing issue in the `FromJSON` instance for `Version`.
haskell
yesodweb/yesod
Aug 2015 - Aug 2015
A RESTful Haskell web framework built on WAI.
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 commits, 3 PRs, 20 comments in 17 days
Contributions summary:Daniel focused on enhancing the Yesod web framework by adding support for type parameters in the `mkYesod` function. They modified the code to allow Site types to accept type parameters and imposed class instances on polymorphic type arguments. Furthermore, the user adapted the code to handle template-haskell changes based on the version of base being used. This included a direct dependency on template-haskell and adjusting arity calculations.
haskellrestrestfulweb-framework
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