Javier De Silóniz Sandino
Senior Software Engineer at Xebia
Cádiz, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolJavier De Silóniz Sandino is a Senior Software Engineer with 11 years of experience, based in Cádiz, Spain, specializing in embedded and mobile technology and more recently in functional back-end systems. He has helped companies adopt Scala and functional practices during a long tenure at 47 Degrees and contributed full-stack work to well-known open-source projects like scala-exercises, adding evaluation, progress tracking and build integrations. Javier combines native iOS and .NET application background with server-side Scala and API integrations (including Twitter API work for scala-lang), giving him a rare cross-stack fluency. Comfortable as both consultant and hands-on developer, he blends practical architecture with implementation, and his early freelance mobile work informs a strong user-focused approach.
11 years of coding experience
20 years of employment as a software developer
Ingeniería Técnica en Informática de Sistemas, Ingeniería Técnica en Informática de Sistemas at Universidad Nacional de Educación a Distancia - U.N.E.D.Japonia
English, Japanese
Github Skills (16)
apim10
php10
functional-programming10
api10
twitter-api10
scala10
oauth9
backend9
front-end-development9
back-end-development9
sbt9
javascript8
cat8
playframework8
testing7
Programming languages (7)
Github contributions (5)
scala/scala-lang
Jan 2017 - Feb 2017
sources for the Scala language website
Role in this project:
Back-end Developer
Back-end DeveloperContributions:127 commits, 1 comment in 1 month
Contributions summary:Javier focused on integrating the Twitter API within the PHP-based application, likely for displaying or processing tweets on the Scala language website. They added and modified code within the `twitteroauth` library, indicating a focus on establishing and managing the connection to the Twitter API. The changes included fetching data from the API and making modifications to the front-end tweet carousel to render Twitter content.
dslscalasbtsourcesscala-native
scala-exercises/scala-exercises
Jul 2016 - Jun 2019
The easy way to learn Scala.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:38 commits, 19 PRs, 32 pushes in 3 years
Contributions summary:Javier contributed to the Scala Exercises project by adding dependencies, integrating the FP In Scala library, and merging branches. They modified build configurations (build.sbt), updated backend code (Evaluator.scala, ExercisesController.scala), and made changes to frontend components (Api.scala, Model.scala, ExercisesJS.scala) suggesting full-stack involvement. Furthermore, the user worked on unit tests and implemented features for code evaluation and user progress tracking.
functional-programmingscalajsscalapostgresqlshapeless
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