Enno Shioji
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolEnno Shioji is a Data & Applied Science leader with 13 years of experience building recommendation systems and advertising technologies from Berlin. He blends hands-on engineering with strategic leadership, focusing on production-grade ML systems and measurable business impact. Enno has a strong backend pedigree—contributing observability and metrics improvements to the well-known Apache StormCrawler project—highlighting his attention to performance and debuggability in distributed systems. Educated at Hokkaido University, he combines rigorous technical depth with practical delivery, often improving operational visibility where models meet scale. Colleagues know him for translating complex data problems into reliable, monitorable solutions that drive product outcomes.
12 years of coding experience
Hokkaido University
English, Japanese, German
Stackoverflow
26,712reputation
3.1mreached
422answers
80questions
wait
top-1%
java
top-1%
queue
top-5%
multithreading
top-1%
volatile
top-5%
soa
top-5%
Github Skills (33)
apache-storm10
web-crawler10
data-collection10
multithreading10
wait10
distributed-systems10
java10
javas10
collections10
metric10
thread-safety9
debug9
debugging9
json9
webservice9
Programming languages (2)
Github contributions (5)
apache/incubator-stormcrawler
Jun 2013 - Jun 2013
A scalable, mature and versatile web crawler based on Apache Storm
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits, 3 pushes, 1 branch in 7 days
Contributions summary:Enno contributed to the project by adding the ability to gather application-specific metrics using the Storm framework. They implemented a `DebugMetricConsumer` that exposes metrics via a servlet, facilitating monitoring and debugging. The user also integrated the debug consumer and other metrics within the CrawlTopology and ParserBolt, showing a focus on improving the crawler's observability and performance monitoring capabilities. This included the use of the codahale metrics library for more sophisticated metrics.
scalableweb-crawlerstormcrawlerapachestorm
eshioji/trident-tutorial
Oct 2013 - Jul 2014
A practical Storm Trident tutorial
Contributions:127 commits in 9 months
stormtridentpractical
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