Available to hire
Hi, I’m Ryusei Gushiken, a senior full-stack and blockchain developer with 7 years of experience delivering high-quality software solutions.
I stay ahead of industry trends, collaborate with cross-functional teams, and continuously sharpen my skills to deliver cutting-edge solutions.
Skills
Experience Level
Expert
Expert
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Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Intermediate
Work Experience
Senior Full-Stack Developer
May 1, 2021 - April 1, 2025Led a mission-critical snap-to-earn platform, contributing to a 30% increase in users. Developed scalable front-end components using JavaScript, React.js, Next.js, and a robust Node.js/PostgreSQL back-end. Directed a cross-functional team of 3 developers, applying Agile methodologies to improve project delivery timelines by 20%. Designed RESTful APIs for seamless front-end/back-end communication, ensuring data integrity and reliability. Deployed and maintained cloud infrastructure on Heroku with environment-specific configuration and production monitoring.
Junior Backend Engineer at Re.Inc
September 1, 2019 - May 1, 2021Developed robust web applications using JavaScript, Ruby on Rails, and React to enhance user experience. Implemented CI/CD pipelines with Jenkins to accelerate deployments. Worked across the full technology stack including PostgreSQL data models for historical trading data, scans, and analytics. Implemented event-driven backend services using Redis for caching and real-time state management. Deployed and maintained cloud infrastructure on Heroku for production monitoring.
Senior Full-Stack Developer at Onplanetz
May 1, 2021 - April 1, 2025Led a team to deliver a production-grade mission-critical snap-to-earn platform, contributing to a 30% increase in users. Built scalable front-end components with React.js, Next.js, and Nest.js, and PostgreSQL, integrating with a robust back-end infrastructure. Architected a Solana trading and analytics platform with real-time on-chain scanning and low-latency trade execution. Designed a multi-RPC architecture using QuickNode and Helios to reduce latency and prevent RPC throttling.
Backend Engineer at Solana Trading Platform (Independent project)
May 1, 2024 - April 1, 2025Designed and implemented a high-performance Solana trading platform with separate read-heavy scanners and write-heavy sniper execution layers to ensure reliability under network congestion. Built real-time on-chain scanner analytics, a low-latency trade execution engine, and Redis-backed caching with real-time state management. Implemented Telegram bots as the primary interface for commands, alerts, and monetization workflows. Deployed PostgreSQL data models for historical trades and analytics; maintained cloud infrastructure on Heroku with environment-based configuration and monitoring.
Education
Bachelor's Degree at Osaka Prefecture University
September 1, 2012 - August 1, 2017Bachelor's Degree at Osaka Prefecture University
September 1, 2012 - August 1, 2017Qualifications
Industry Experience
Software & Internet, Financial Services, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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