Hiroki Fujino
Senior Backend Engineer at SPREAD AI
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolHiroki Fujino is a Senior Backend Engineer based in Berlin with 11 years of experience building high-performance, cloud-native systems. He has led engineering efforts and hands-on development across startups and scale-ups, from designing low-latency ad platforms in Scala to shipping APIs, chatbots, and timezone-aware global features using Golang, Scala, Python, and Google Cloud. As Head of Engineering at Unipos he combined product, security (ISMS/GDPR) and automation work—showing a blend of technical leadership and operational rigor. More recently he’s focused on backend roles at UBIRCH and SPREAD AI, driving production-grade services and integrations. Trained at The University of Tokyo and Keio University, he pairs strong academic foundations with practical system design and mentoring experience. Colleagues will notice his pattern of optimizing for latency and global-scale requirements while maintaining compliance and developer productivity.
10 years of coding experience
7 years of employment as a software developer
University of TokyoBachelor's degree System Design, Bachelor's degree System Design at Keio University
Github Skills (109)
cortex10
security10
rust-lang10
compiler10
rust10
devsecops9
intermediate9
http9
http-client9
garbage-collection9
rust-language9
standard-library9
scala9
crate9
orchestrate9
Programming languages (10)
Github contributions (5)
Hiroki6/Collaborative-Filtering
Sep 2015 - Dec 2017
Contributions:46 PRs, 102 pushes, 12 branches in 2 years 3 months
ubirch/ubirch-incident-service
Jan 2021 - May 2023
this service collects and filters messages from kafka error topics
Contributions:6 reviews, 3 PRs, 10 pushes in 2 years 4 months
kafkaerrorfilters
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