Francisco Castaño
Principal Software Engineer I at Elastic
Randstad, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolFrancisco Castaño is a Principal Software Engineer with 12 years of experience specializing in distributed systems, functional programming, databases and performance-driven backend development. Currently at Elastic, he advances Elasticsearch robustness and Azure blob storage integrations—contributing metrics, snapshot recovery fixes, and queryable shard snapshot features to a widely used open-source search engine. His background includes core database work on Apache Cassandra at DataStax and hands-on SRE and engineering roles that sharpen his systems reliability instincts. A regular speaker at international conferences (FOSDEM, Europython, Codemotion, Scala Workshop and several PyCons), he blends deep technical craft with clear communication and team mentoring. Early research on assistive indoor navigation reflects a long-standing interest in applied, human-centered systems beyond pure infrastructure.
12 years of coding experience
10 years of employment as a software developer
Bachelor's Degree Computer Science, Bachelor's Degree Computer Science at Universidad de Castilla-La Mancha
Spanish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
javas10
error-handling10
azure-blob-storage10
java10
testing9
performance-optimization9
Programming languages (13)
Github contributions (5)
elastic/elasticsearch
May 2020 - Jan 2023
Free and Open Source, Distributed, RESTful Search Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:987 reviews, 301 commits, 701 PRs in 2 years 8 months
Contributions summary:Francisco primarily contributed to enhancing the Azure-based repository features. They focused on adding metrics collection for various Azure Blob Storage operations and implemented document expansion and maximum document size limits. Furthermore, the user was responsible for debugging failures and fixing various issues related to blob operations and snapshot-based recoveries, indicating a focus on robustness and performance. Finally they also added the ability to query the last successful shard snapshot.
restfulsearch-engineopensearchelasticsearchjava
fcofdez/upkoder
Mar 2015 - Jul 2015
Contributions:54 commits, 44 pushes, 3 branches in 3 months
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