Josef Butzke
Software Engineer at Travelience Inc.
Yokohama, Japan
Summary
👤
Senior🎓
Top SchoolJosef Butzke is a Senior Software Engineer based in Yokohama with 10 years’ experience building high-performance web and mobile products that prioritize clean architecture, maintainability, and measurable business impact. He specializes in React/React Native, TypeScript, Node and GraphQL, and has led end-to-end delivery of features like Airport Transfer flows and a ChatGPT-powered app while driving UI revamps, SEO, security, and cost optimizations. Josef combines hands-on implementation with technical leadership—mentoring hires, defining sprint goals, and owning deployment planning across backend, servers and mobile apps. He has a background in full-stack systems (Postgres, Mongo, Redis) and practical device integration work (React Native + Arduino over BLE), showing comfort across embedded-to-cloud boundaries. Comfortable in startup settings, he focuses on shipping polished user experiences where technical tradeoffs directly affect engagement.
10 years of coding experience
1 year of employment as a software developer
Bacharelado, Computer Science, Bacharelado, Computer Science at Universidade Vila Velha - UVVFull Stack Developer, Full Stack Developer at Rocketseat
Stackoverflow
71reputation
19kreached
1answer
0questions
Github Skills (28)
hm-109
realm8
nosql-database7
projeto7
arduino6
android-studio6
nodejs6
android6
react-native6
realtime-database5
mobile-first5
reactive5
javascript5
gesture4
database4
Programming languages (4)
Github contributions (5)
JosefButzke/greenhouse-system
Nov 2019 - Nov 2022
A project to manager greenhouse with comunication between Arduino and React-native using Green House System with hm-10
Contributions:23 commits, 60 pushes, 1 branch in 3 years
arduinohm-10react-native
JosefButzke/forager-clone
Jan 2023 - Feb 2026
Contributions:2 pushes, 1 branch in 3 years
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