Alfonso Muñumer
Data Engineer
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolAlfonso Muñumer is a Data Engineer with 13 years of hands-on experience building large-scale Big Data platforms and pipelines, currently helping Proton make privacy-first products like ProtonMail and ProtonDrive data-driven. He specializes in Spark (Scala), Kafka, Airflow and storage solutions such as ClickHouse, Ceph and HBase, with a strong background in Hadoop-era tooling and modern streaming architectures. A long-time Apache contributor and PMC committer for Apache Gora—now an ASF member—he brings deep open-source credibility in in-memory data models and persistence layers. He has led small teams and driven production ETLs and analytics for retail, public sector and adtech use cases, blending JVM expertise (Java/Scala) with functional Scala microservices. Beyond core data systems he has experience across Elastic Stack, frontend tech and even embedded projects (Arduino), reflecting a pragmatic full-stack curiosity. Based in Barcelona, he pairs rigorous platform engineering with a track record of mentoring and evolving Big Data architectures toward scalable, secure solutions.
13 years of coding experience
16 years of employment as a software developer
Basic Grade, 3rd of Middle Grade studies with violín speciality, Basic Grade, 3rd of Middle Grade studies with violín speciality at Conservatorio Oficial de música del Colegio ObradoiroTechnical Engineer in Informatics, Technical Engineer in Informatics at Universidad de A CorunaDegree in Informatics, Software Engineering, Degree in Informatics, Software Engineering at Universidad de A Coruña
Spanish, Galician, English
Stackoverflow
1,876reputation
274kreached
82answers
4questions
hadoop
top-5%
Github Skills (133)
persistence10
embedded10
cpp10
cloud-native10
sql10
ai10
rust10
database10
in-memory10
analytics10
java10
clickhouse10
data-model9
big-data9
hadoop9
Programming languages (8)
Github contributions (5)
alfonsonishikawa/pacman
Oct 2014 - Nov 2019
Contributions:36 commits, 1 push in 5 years 1 month
alfonsonishikawa/gora
Jun 2016 - Oct 2020
Mirror of Apache Gora
Contributions:48 pushes, 9 branches in 4 years 4 months
golangapache
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