Kazuki Nishiura
Head Of Engineering at Sardine
Berkeley, California, United States
Summary
👤
Senior🎓
Top SchoolKazuki Nishiura is a Head of Engineering with 13 years of experience building payment, fraud, and compliance systems for fintechs, currently leading engineering at Sardine in Berkeley. He combines hands-on backend and full-stack expertise—Go, TypeScript, PHP—and a history of shipping integrations and developer tooling, including the open-source sleet payment abstraction he published while at Bolt. Kazuki has scaled teams and systems through rapid growth phases (acting as head of integration engineering for a 10x customer surge) and delivered cross-organizational launches at Google Pay, including Japan support with FeliCa integration. Early-stage founding roles and mobile/AR work reflect a product-first mindset and breadth across client and server platforms. Known for improving test automation and code quality (contributions to Crawljax), he pairs pragmatic engineering with operational rigor to secure and scale financial services.
13 years of coding experience
9 years of employment as a software developer
University of TokyoSoftware Engineering in practice, Software Engineering in practice at TopSE
English, Japanese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (13)
testing10
crawler10
javas10
java10
test-automation10
crawling10
junit9
debug9
refactoring8
dom7
web-testing7
dynamic7
webtest7
Programming languages (21)
Github contributions (5)
crawljax/crawljax
Jun 2013 - Sep 2013
Crawljax
Role in this project:
Backend Developer & Test Automation Engineer
Backend Developer & Test Automation EngineerContributions:5 commits in 3 months
Contributions summary:Kazuki primarily focused on bug fixes and refactoring within the Java-based codebase, specifically in the context of a testing framework. Their contributions addressed issues related to system-dependent newline characters and inconsistencies in test assertions. The user also corrected a spelling error and removed unnecessary, blank javadocs. Furthermore, they worked on updating the test cases and ensuring consistency.
web-applicationsdynamicjavascriptweb-basedweb-testing
sardine-ai/bindb-go
Aug 2021 - Feb 2023
Contributions:7 reviews, 1 PR, 4 pushes in 1 year 5 months
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