Hi, I'm Kazuki Nishiura - CTO at Sardine
I'm driven by building secure and scalable financial technologies. My passion lies in solving complex problems in fraud, compliance, and payments, thriving in fast-paced, high-growth environments like Sardine and Bolt.
At a glance
Curated signals on strengths, focus areas, and how they can help.
Led scaling efforts at Bolt, growing its infrastructure 10x from Series A to C.
Currently building robust fraud, compliance, and payment platforms as CTO at Sardine.
Can advise on scaling engineering teams and infrastructure for fintech startups.
🚀 Career trajectory
Foundational Engineering
Began career as a software developer, gaining core technical skills and experience in early-stage companies.
✦ Software Development
✦ QONCEPT, INC.
Hyper-Growth & Scaling
Drove significant scaling efforts at Bolt, contributing to exponential growth and engineering leadership.
✦ Staff Engineer
✦ Bolt
✦ Fintech
Fintech Innovation & Leadership
Currently leading technology strategy as CTO at Sardine, focusing on fraud, compliance, and payments in the crypto/fintech sector.
✦ CTO
✦ Sardine
✦ Crypto
✦ Compliance
💪🏻 Superpowers
Fintech Infrastructure Architect
Building secure and scalable fraud prevention solutions
✦ Helped Bolt scale 10x (series A to C)
✦ Worked on international expansion of Google Pay
✦ Fighting with fraud and making compliance easier at Sardine
Cross-Platform System Builder
Expertise in end-to-end software development.
✦ Designed and built iOS, Android, and server-side architecture.
✦ Founded Emaki Inc., managing full product development lifecycle.
✦ Leveraged skills in Java, Ruby, and other key development languages.
Growth-Stage Startup Navigator
Proven ability to drive rapid company expansion.
✦ Played a key role in Bolt's hyper-growth phase.
✦ Experience in fast-paced environments from founding roles.
✦ Passionate about supporting companies through scaling challenges.
I'm excited about
✦ Discovering novel approaches to fraud prevention in digital finance.
✦ Connecting with founders and engineers building the next wave of fintech.
✦ Exploring collaborations to enhance payment security and compliance globally.
I can help with
✦ Connect fintechs directly to vital fraud and compliance networks.
✦ Mentor payment architects for accelerated mobile growth strategies.
✦ Guide scale-ups with expert infrastructure insights for rapid expansion.
I would love your help on
✦ Recommendations for emerging technologies in decentralized finance.
✦ Connections to experts in regulatory compliance for international fintech.
✦ Insights into novel user acquisition strategies for financial products.