Sebastián Celestino
Sr Software Engineer at Skyscanner
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolSebastián Celestino is a senior software engineer based in Barcelona with 11 years of experience building scalable, high-availability microservices for travel and commerce platforms. He specializes in JVM ecosystems—Scala and Java—while also applying Python and JavaScript across full-stack systems, cloud deployments (AWS/OpenStack), and diverse datastores like Cassandra, MongoDB and Redis. At Skyscanner he helps maintain a dozen production microservices improving search experiences, and earlier led architecture and delivery of a large vacation-rentals platform at Despegar, shipping 15+ applications under TDD and Agile practices. An active Scala enthusiast and contributor to the popular json4s library (improving array replace semantics and deserialization robustness), he blends hands-on coding with mentoring and internal training on functional programming. Known for solving complex problems with simple designs, he continually pursues new technologies and practical innovation.
11 years of coding experience
6 years of employment as a software developer
Engineer's degree, Information Systems, Engineer's degree, Information Systems at Universidad Tecnológica Nacional
English, Spanish
Stackoverflow
1,418reputation
50kreached
50answers
3questions
scala
top-5%
Github Skills (16)
scala10
testing10
json10
data-structure9
data-structures9
algorithm9
algorithms9
jackson7
future6
generics6
syntax6
json4s6
composition6
boolean6
traits6
Programming languages (5)
Github contributions (5)
json4s/json4s
Aug 2018 - Sep 2018
JSON library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 2 PRs in 8 days
Contributions summary:Sebastián primarily focused on enhancing the JSON4s library, a Scala-based JSON processing library. Their contributions centered on improving the `replace` function for JSON arrays, allowing for the replacement of individual or all elements within an array. They also addressed a deserialization issue related to default values in case classes, enhancing the library's functionality and robustness. Furthermore, they added new tests for array replacements, ensuring the quality and accuracy of the library's features.
json-libraryscalajacksonjsonjson-parser
scelestino/flowly4j
Jan 2019 - Sep 2019
Lightweight workflow engine
Contributions:66 commits, 2 PRs, 23 pushes in 8 months
workflow-enginedataflow-programmingflow-based-programmingdataflowworkflow
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