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Hello! I’m Echo Chang, a frontend and Web3-focused developer with 5+ years of experience delivering enterprise-grade applications. I’m proficient in the React and Vue ecosystems, capable of independently completing component-based development. I write clean, high-quality JavaScript (ES6+) and TypeScript, with a solid foundation in HTML5, CSS3, semantic markup, and cross-browser compatibility. I’m familiar with Git workflows and collaborative development, and I’ve led team efforts to build, maintain, and optimize medium- to large-scale projects with a focus on performance and code quality. I also have a basic understanding of blockchain concepts and DApp development (ethers.js/web3.js) and am actively transitioning from traditional front-end to blockchain front-end development, driven by a keen learning mindset. As for projects, I’ve steered frontend architecture refactors using modern tooling (Vite, modular design, Tailwind) and built standardized component systems and design tokens. I’ve designed and implemented blockchain interaction layers (multi-chain wallet authentication with RainbowKit/Wagmi, contract invocation with Wagmi/Web3.js), and created reusable hooks and monitoring for transaction status. I’ve also built modular R&D tooling, documentation, and performance monitoring practices to improve delivery speed and maintainability. I’m passionate about Web3 and continuously explore new technologies to deliver robust, scalable frontend solutions.…Hello! I’m Echo Chang, a frontend and Web3-focused developer with 5+ years of experience delivering enterprise-grade applications. I’m proficient in the React and Vue ecosystems, capable of independently completing component-based development. I write clean, high-quality JavaScript (ES6+) and TypeScript, with a solid foundation in HTML5, CSS3, semantic markup, and cross-browser compatibility. I’m familiar with Git workflows and collaborative development, and I’ve led team efforts to build, maintain, and optimize medium- to large-scale projects with a focus on performance and code quality. I also have a basic understanding of blockchain concepts and DApp development (ethers.js/web3.js) and am actively transitioning from traditional front-end to blockchain front-end development, driven by a keen learning mindset. As for projects, I’ve steered frontend architecture refactors using modern tooling (Vite, modular design, Tailwind) and built standardized component systems and design tokens. I’ve designed and implemented blockchain interaction layers (multi-chain wallet authentication with RainbowKit/Wagmi, contract invocation with Wagmi/Web3.js), and created reusable hooks and monitoring for transaction status. I’ve also built modular R&D tooling, documentation, and performance monitoring practices to improve delivery speed and maintainability. I’m passionate about Web3 and continuously explore new technologies to deliver robust, scalable frontend solutions.

Echo Chang

Front-End Developer, Web Developer, Full Stack Developer, +2

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Hello! I’m Echo Chang, a frontend and Web3-focused developer with 5+ years of experience delivering enterprise-grade applications. I’m proficient in the React and Vue ecosystems, capable of independently completing component-based development. I write clean, high-quality JavaScript (ES6+) and TypeScript, with a solid foundation in HTML5, CSS3, semantic markup, and cross-browser compatibility. I’m familiar with Git workflows and collaborative development, and I’ve led team efforts to build, maintain, and optimize medium- to large-scale projects with a focus on performance and code quality. I also have a basic understanding of blockchain concepts and DApp development (ethers.js/web3.js) and am actively transitioning from traditional front-end to blockchain front-end development, driven by a keen learning mindset. As for projects, I’ve steered frontend architecture refactors using modern tooling (Vite, modular design, Tailwind) and built standardized component systems and design tokens. I’ve designed and implemented blockchain interaction layers (multi-chain wallet authentication with RainbowKit/Wagmi, contract invocation with Wagmi/Web3.js), and created reusable hooks and monitoring for transaction status. I’ve also built modular R&D tooling, documentation, and performance monitoring practices to improve delivery speed and maintainability. I’m passionate about Web3 and continuously explore new technologies to deliver robust, scalable frontend solutions.…Hello! I’m Echo Chang, a frontend and Web3-focused developer with 5+ years of experience delivering enterprise-grade applications. I’m proficient in the React and Vue ecosystems, capable of independently completing component-based development. I write clean, high-quality JavaScript (ES6+) and TypeScript, with a solid foundation in HTML5, CSS3, semantic markup, and cross-browser compatibility. I’m familiar with Git workflows and collaborative development, and I’ve led team efforts to build, maintain, and optimize medium- to large-scale projects with a focus on performance and code quality. I also have a basic understanding of blockchain concepts and DApp development (ethers.js/web3.js) and am actively transitioning from traditional front-end to blockchain front-end development, driven by a keen learning mindset. As for projects, I’ve steered frontend architecture refactors using modern tooling (Vite, modular design, Tailwind) and built standardized component systems and design tokens. I’ve designed and implemented blockchain interaction layers (multi-chain wallet authentication with RainbowKit/Wagmi, contract invocation with Wagmi/Web3.js), and created reusable hooks and monitoring for transaction status. I’ve also built modular R&D tooling, documentation, and performance monitoring practices to improve delivery speed and maintainability. I’m passionate about Web3 and continuously explore new technologies to deliver robust, scalable frontend solutions.

Available to hire

Hello! I’m Echo Chang, a frontend and Web3-focused developer with 5+ years of experience delivering enterprise-grade applications. I’m proficient in the React and Vue ecosystems, capable of independently completing component-based development. I write clean, high-quality JavaScript (ES6+) and TypeScript, with a solid foundation in HTML5, CSS3, semantic markup, and cross-browser compatibility. I’m familiar with Git workflows and collaborative development, and I’ve led team efforts to build, maintain, and optimize medium- to large-scale projects with a focus on performance and code quality. I also have a basic understanding of blockchain concepts and DApp development (ethers.js/web3.js) and am actively transitioning from traditional front-end to blockchain front-end development, driven by a keen learning mindset.

As for projects, I’ve steered frontend architecture refactors using modern tooling (Vite, modular design, Tailwind) and built standardized component systems and design tokens. I’ve designed and implemented blockchain interaction layers (multi-chain wallet authentication with RainbowKit/Wagmi, contract invocation with Wagmi/Web3.js), and created reusable hooks and monitoring for transaction status. I’ve also built modular R&D tooling, documentation, and performance monitoring practices to improve delivery speed and maintainability. I’m passionate about Web3 and continuously explore new technologies to deliver robust, scalable frontend solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Chinese

Fluent

English

Advanced

Work Experience

Front-end Development Engineer at Inner Mongolia Yunkuang Technology Co., Ltd.

May 1, 2019 - September 6, 2025

Led front-end architecture design and development for enterprise-level projects, built a responsive page system, collaborated with UX/UI teams to componentize design, and encapsulated global data interaction modules via Axios. Optimized front-end and back-end integration, established a front-end code quality control system with modular development and ESLint standards, and addressed browser compatibility and mobile adaptation to ensure stable operation. Guided agile delivery for medium- to large-scale projects, decomposed requirements, conducted code reviews, improved user interactions, and enhanced page performance. Eliminated historical technical debt by introducing native JavaScript modularization to refactor core functionalities and pages, set scalable coding standards, and enabled a smooth upgrade path. Contributed to cross-browser stability and maintainable codebases, and supported continuous improvement of development processes.

Front-end Development Engineer at CyberTech Information Technology Co., Ltd.

December 1, 2020 - September 6, 2025

Led front-end architecture design and core function development of an enterprise OA platform, building a highly available framework based on React/Vue, applying modular design and engineering practices. Participated in product requirement analysis and technical solution design, established front-end technology criteria aligned with business scenarios, and collaborated with product/UI/back-end teams to deliver key functions. Refactored code to improve performance, introduced standardized component libraries and a layered state management approach, and implemented robust data validation with Ant Design Form integration. Promoted efficiency through code quality controls, automated testing, and cross-project knowledge sharing.

Front-end Development Engineer at City Cloud Technology (Hangzhou) Co., Ltd.

May 1, 2021 - September 6, 2025

Maintained and iterated core functions of the smart city platform, established a modular maintenance mechanism to ensure long-term maintainability of large-scale projects, and upgraded data visualization modules. Redesigned interactive processes to reduce user operation complexity, mentored junior engineers via pair programming and technical seminars, and supported data-driven decision-making improvements. Enhanced data presentation efficiency and business decision support through improved visualization and UI interactions.

Independent Developer at Self-Employed / Independent Developer

February 28, 2025 - September 6, 2025

Deeply studied Web3-related knowledge and built decentralized applications using React. Led front-end architecture design and core function development for Amphi, a Web3+AI language service platform. Independently undertook full lifecycle development of multiple enterprise-level systems, maintained best practices in front-end engineering, established standardized development processes, and ensured high-quality project delivery. Continued practice of cutting-edge technologies such as Web3, blockchain interactions (ethers.js/Wagmi/RainbowKit), and modular engineering for scalable, maintainable codebases.

Front-end Development Engineer at Inner Mongolia Yunkuang Technology Co., Ltd.

May 1, 2019 - September 6, 2025

Led front-end architecture design and componentization for enterprise projects; built a responsive page system; collaborated with UX to encapsulate global data interaction modules via Axios; established front-end code quality controls including ESLint and modular development; overcame browser compatibility and mobile adaptation challenges; led agile delivery for medium-to-large projects, improving interaction smoothness and page performance.

Front-end Development Engineer at CyberTech Information Technology Co., Ltd.

December 1, 2020 - September 6, 2025

Led front-end architecture and core function development of enterprise OA platforms; built a high-availability system framework based on the React/Vue stack; established front-end technology criteria; collaborated with product, UI, and back-end teams to complete the iteration of 5 key functions; drive code refactoring for performance; implemented front-end performance monitoring and standardized a reusable component library; improved cross-project efficiency and documentation.

Front-end Development Engineer at City Cloud Technology (Hangzhou) Co., Ltd.

May 1, 2021 - September 6, 2025

Led the maintenance and iterative optimization of the core functions of the smart city platform; enhanced data visualization modules; established a modular maintenance mechanism to ensure long-term maintainability of large-scale projects; redesigned interactive processes to simplify user operations; mentored junior engineers and promoted knowledge transfer.

Independent Front-end Developer (Web3) at Independent Developer

February 1, 2025 - September 6, 2025

Deeply studied Web3 concepts and built decentralized applications using the React framework; led frontend architecture design and core function development for Amphi, a Web3+AI language service platform; standardized component system and UI guidelines with a unified design system; designed layered state management to decouple business logic from the view; built a blockchain interaction middle layer (Wagmi + Web3.js) for contract invocation, transaction tracking, and gas optimization; created reusable blockchain operation hooks and monitoring for transaction anomalies; contributed to R&D efficiency tooling and complete documentation for module interfaces.