Freelancer - Senior Software Engineer

Global

• Deliver end-to-end software consulting for startups and enterprise clients across AI, full-stack, and blockchain domains.
• Design scalable cloud-native architectures for AI-powered SaaS platforms, automation tools, and analytics systems.
• Build intelligent applications using LLMs, RAG pipelines, vector databases, and AI agent workflows.
• Develop production-grade APIs and backend services using Python, Node.js, and distributed cloud infrastructure.
• Integrate blockchain infrastructure with modern web applications including smart contracts, wallet systems, and on-chain analytics.
• Lead architecture decisions, technical planning, and performance optimization for complex software systems.

Blockchain Solution Architect

ConsenSys, USA

• Architected enterprise-grade blockchain ecosystems for finance, supply chain, and digital asset platforms.
• Designed secure distributed infrastructures using private and consortium blockchain networks.
• Led smart contract architecture and security reviews for high-value transactional systems.
• Collaborated with stakeholders to translate business requirements into scalable technical architecture.
• Improved transaction transparency, auditability, and operational efficiency through decentralized infrastructure.

Blockchain Developer

ConsenSys, USA

• Developed decentralized applications (dApps), smart contracts, and blockchain APIs.
• Implemented token standards including ERC-20, ERC-721, and ERC-1155
• Built Web3 integrations for wallets, on-chain transactions, and DeFi protocols.
• Performed contract testing, gas optimization, and security validation.
• Worked closely with frontend teams to deliver production-ready blockchain products.

Interns

GMO Internet Group, Japan

• Focused on gaining hands-on experience in web development.
• Worked with HTML, CSS, and JavaScript to support the development of basic company websites and internal tools.
• Understand project workflows, debug front-end issues, and collaborate with senior developers to implement responsive design principles.

Front-End Developer

GMO Internet Group, Japan

• Built dynamic interfaces using JavaScript frameworks and reusable UI components.
• Developed dashboards and customer portals focused on usability and performance.
• Improved responsiveness and browser compatibility across products.

Full-stack Developer

GMO Internet Group, Japan

• Built responsive internal platforms and customer-facing web applications.
• Developed backend APIs and frontend interfaces for business tools.
• Improved system performance and usability across multiple products.
• Collaborated with designers and engineers in agile workflows.

Bachelor of Information Technology

Hosei University, Japan

Studied computer and programming languages in the Department of Information Science during college. I received a bachelor's degree in computer science upon graduating from college.