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Innovative and detail-oriented Senior Blockchain & Full-Stack Developer with 10+ years of experience in full-stack software development and blockchain engineering. Proven track record of designing and deploying scalable dApps, NFT platforms, and secure smart contracts (Solidity, Rust, Haskell). Expert in modern web frameworks and back-end architecture, with strong knowledge of cryptography, decentralized protocols, and crosschain systems. Skilled in collaborating across teams, mentoring junior engineers, and delivering production-ready code in fast-paced environments.…Innovative and detail-oriented Senior Blockchain & Full-Stack Developer with 10+ years of experience in full-stack software development and blockchain engineering. Proven track record of designing and deploying scalable dApps, NFT platforms, and secure smart contracts (Solidity, Rust, Haskell). Expert in modern web frameworks and back-end architecture, with strong knowledge of cryptography, decentralized protocols, and crosschain systems. Skilled in collaborating across teams, mentoring junior engineers, and delivering production-ready code in fast-paced environments.

Takeda Yoichi

Blockchain Developer, Full Stack Developer, Back-End Developer, +2

5.0 (1 review)

Innovative and detail-oriented Senior Blockchain & Full-Stack Developer with 10+ years of experience in full-stack software development and blockchain engineering. Proven track record of designing and deploying scalable dApps, NFT platforms, and secure smart contracts (Solidity, Rust, Haskell). Expert in modern web frameworks and back-end architecture, with strong knowledge of cryptography, decentralized protocols, and crosschain systems. Skilled in collaborating across teams, mentoring junior engineers, and delivering production-ready code in fast-paced environments.…Innovative and detail-oriented Senior Blockchain & Full-Stack Developer with 10+ years of experience in full-stack software development and blockchain engineering. Proven track record of designing and deploying scalable dApps, NFT platforms, and secure smart contracts (Solidity, Rust, Haskell). Expert in modern web frameworks and back-end architecture, with strong knowledge of cryptography, decentralized protocols, and crosschain systems. Skilled in collaborating across teams, mentoring junior engineers, and delivering production-ready code in fast-paced environments.

Available to hire

Innovative and detail-oriented Senior Blockchain & Full-Stack Developer with 10+ years of
experience in full-stack software development and blockchain engineering. Proven track
record of designing and deploying scalable dApps, NFT platforms, and secure smart
contracts (Solidity, Rust, Haskell). Expert in modern web frameworks and back-end
architecture, with strong knowledge of cryptography, decentralized protocols, and crosschain systems. Skilled in collaborating across teams, mentoring junior engineers, and
delivering production-ready code in fast-paced environments.

Skills

Experience Level

Expert

Expert

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Expert

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Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Japanese

Fluent

English

Advanced

Work Experience

Senior Smart Contract & Back-End Developer at OMG Company

April 30, 2024 - July 23, 2025

Developed and deployed smart contracts using Solidity, Rust, and Haskell across Ethereum, BSC, and Solana ecosystems. Led backend systems for NFT and DeFi applications using Python, Node.js, and PostgreSQL. Integrated wallet support including Metamask and WalletConnect to improve dApp transaction flow. Collaborated with auditors to ensure secure smart contract deployments. Mentored junior developers and conducted architecture and code reviews.

Blockchain Engineer at Infinite Uptime

March 31, 2022 - July 23, 2025

Built and deployed ERC20/ERC721 tokens and NFT marketplaces using React, Web3, and Solidity. Implemented DeFi protocols and smart contract functionalities for token swaps and staking. Utilized Bitcoin multi-signature transactions and custom encryption logic for dApps. Forked Uniswap and Bancor protocols to create custom trading features.

Smart Contract Developer at MEZURASHICO

February 28, 2019 - July 23, 2025

Created Solidity smart contracts for trading applications and token launches. Integrated Metamask and other wallets for user onboarding and interaction. Built back-end infrastructure and data retrieval logic using Node.js and MongoDB. Collaborated closely with frontend teams to integrate smart contract functionalities.

Front-End Engineer at Nowsite

June 30, 2017 - July 23, 2025

Developed user interfaces for NFT marketplace and blockchain dashboards using React Native, TypeScript, and Tailwind CSS. Delivered high-performance, mobile-responsive web applications with pixel-perfect design implementation.

Full-Stack Developer at FIXER

August 31, 2014 - July 23, 2025

Developed full-stack systems using React, Vue, Angular, Django and Laravel back-end frameworks. Automated data pipelines with Python and JavaScript scripts. Integrated various file systems (IPFS, COBAL) and enterprise databases including Oracle, Teradata, and MongoDB.

Senior Smart Contract & Back-End Developer at OMG Company

April 30, 2024 - July 23, 2025

Developed and deployed smart contracts using Solidity, Rust, and Haskell across Ethereum, BSC, and Solana ecosystems. Led backend systems for NFT and DeFi applications using Python, Node.js, and PostgreSQL. Integrated wallet support (Metamask, WalletConnect) and improved dApp transaction flow. Collaborated with auditors to ensure secure smart contract deployments. Mentored junior developers and conducted architecture and code reviews.

Blockchain Engineer at Infinite Uptime

March 31, 2022 - July 23, 2025

Built and deployed ERC20/ERC721 tokens and NFT marketplaces using React, Web3, and Solidity. Implemented DeFi protocols and smart contract functionality for token swaps and staking. Used Bitcoin multi-signature transactions and custom encryption logic for dApps. Forked Uniswap and Bancor protocols for custom trading functionality.

Smart Contract Developer at MEZURASHICO

February 28, 2019 - July 23, 2025

Created Solidity smart contracts for trading applications and token launches. Implemented Metamask and other wallets for user onboarding and interaction. Built back-end infrastructure and data retrieval logic using Node.js and MongoDB. Collaborated with frontend teams on integrating smart contract functionality.

Front-End Engineer at Nowsite

June 30, 2017 - July 23, 2025

Built UIs for NFT marketplace and blockchain dashboards using React Native, TypeScript, and Tailwind CSS. Delivered high-performance and mobile-responsive web apps with pixel-perfect design implementation.

Full-Stack Developer at FIXER

August 31, 2014 - July 23, 2025

Developed full-stack systems in React, Vue, Angular, and backend frameworks like Django and Laravel. Automated data pipelines using Python and JS scripts. Integrated various file systems (IPFS, COBAL) and enterprise databases (Oracle, Teradata, MongoDB).

Senior Smart Contract & Back-End Developer at OMG Company

April 30, 2024 - July 23, 2025

Developed and deployed smart contracts using Solidity, Rust, and Haskell across Ethereum, BSC, and Solana ecosystems. Led backend systems for NFT and DeFi applications using Python, Node.js, and PostgreSQL. Integrated wallet support (Metamask, WalletConnect) and improved dApp transaction flows. Collaborated with auditors to ensure secure smart contract deployments. Mentored junior developers and conducted architecture and code reviews.

Blockchain Engineer at Infinite Uptime

March 31, 2022 - July 23, 2025

Smart Contract Developer at MEZURASHICO

February 28, 2019 - July 23, 2025

Front-End Engineer at Nowsite

June 30, 2017 - July 23, 2025

Built user interfaces for NFT marketplaces and blockchain dashboards using React Native, TypeScript, and Tailwind CSS. Delivered high-performance and mobile-responsive web apps with pixel-perfect design implementation.

Full-Stack Developer at FIXER

August 31, 2014 - July 23, 2025

Developed full-stack systems using React, Vue, Angular, and backend frameworks including Django and Laravel. Automated data pipelines with Python and JavaScript scripts. Integrated various file systems such as IPFS and enterprise databases like Oracle, Teradata, and MongoDB.

Senior Smart Contract & Back-End Developer at OMG Company

April 30, 2024 - July 23, 2025

Developed and deployed smart contracts using Solidity, Rust, and Haskell across Ethereum, BSC, and Solana ecosystems. Led backend systems for NFT and DeFi applications using Python, Node.js, and PostgreSQL. Integrated wallet support (Metamask, WalletConnect) and improved dApp transaction flow. Collaborated with auditors to ensure secure smart contract deployments. Mentored junior developers and conducted architecture/code reviews.

Blockchain Engineer at Infinite Uptime

March 31, 2022 - July 23, 2025

Smart Contract Developer at MEZURASHICO

February 28, 2019 - July 23, 2025

Front-End Engineer at Nowsite

June 30, 2017 - July 23, 2025

Full-Stack Developer at FIXER

August 31, 2014 - July 23, 2025

Developed full-stack systems in React, Vue, Angular, and backend frameworks like Django and Laravel. Automated data pipelines using Python and JavaScript scripts. Integrated various file systems (IPFS, COBAL) and enterprise databases (Oracle, Teradata, MongoDB).