Masashi Nishiwaki
Software Engineer at 株式会社カンカク
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolMasashi Nishiwaki is a seasoned software engineer with 13 years of experience building web and platform systems across startups and large companies in Japan, currently contributing at 株式会社カンカク. He has a strong background in system design, web security, and multi-language development (C/C++, Objective-C, Java, Ruby, Python, JavaScript, etc.), having worked on SSO, HaaS/PaaS platforms, OpenID, and mobile apps since his early career at SoftBank BB. Masashi has held technical leadership roles including CTO and Engineering Manager, blending hands-on implementation with product-minded architecture and operational concerns. Comfortable across backend, mobile, and security domains, he brings a practical, full-stack perspective informed by both enterprise and startup environments. Unusually, his career spans deep protocol-level work (SSO/OpenID) and consumer-facing mobile/web account systems, giving him a rare mix of low-level systems thinking and user-centric product experience.
13 years of coding experience
12 years of employment as a software developer
学士, 情報科学, 学士, 情報科学 at Osaka Institute of Technology
Stackoverflow
1reputation
38reached
0answers
1question
Github Skills (31)
payment-service7
visa7
upi7
row7
adyen6
api6
payment-processing6
payment6
braintree6
ruby-client6
payment-gateway6
python6
iban6
sepa6
oauth5
Programming languages (2)
Github contributions (5)
htz/Force.com-OAuth1-2
Jul 2012 - Mar 2015
Contributions:59 commits, 7 pushes, 1 comment in 2 years 8 months
apideveloper-kitoauth2forceoauth
htz/hcc
Apr 2019 - Jun 2022
Contributions:232 pushes, 7 branches, 36 comments in 3 years 2 months
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