Open to opportunities

Felix User

@felixjin

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Experienced software developer specializing in web apps, UX, and blockchain exploration.

Hong Kong

Message

What I'm looking for

I seek roles where I can build user-focused web apps or blockchain solutions, mentor peers, work in collaborative agile teams, and solve complex backend/frontend problems with modern tooling.

I am a motivated, self-taught software developer with more than 10 years of professional experience building full-featured web applications focused on user experience and efficient backend design.

I have architected and deployed multiple projects across the software development lifecycle, working with React, Redux, Node.js, Express, MongoDB, and various front-end frameworks while improving performance with tools like Webpack.

I have freelanced and collaborated in demanding environments, delivering single-page apps, RESTful APIs, and mobile proofs of concept using React Native (Expo), and I enjoy mentoring peers and managing multiple projects to meet strict deadlines.

Currently I am studying and freelancing as a Blockchain developer, bringing strong analytical thinking and a passion for applying modern web and backend technologies to decentralized systems.

Experience

Work history, roles, and key accomplishments

Current

Blockchain Developer

Current

Self-Employed

Jan 2023 - Present (3 years)

Freelancing as a blockchain developer studying and building blockchain solutions, delivering prototypes and smart-contract integrations for clients since 2023.

Blockchain Smart Contracts Solidity Web3.js Ethereum JavaScript Testing

React Developer

Doctify

Jan 2020 - Jan 2022 (2 years)

Built a high-performance React application with pixel-perfect styled-components, integrated Context API for state management, and delivered a React Native proof-of-concept.

React styled components Context API React Native Expo REST APIs JavaScript Performance Optimization

Freelance Software Developer

Freelancer.com & Upwork.com

Jan 2015 - Jan 2020 (5 years)

Delivered custom web applications and APIs for multiple clients, designing MongoDB schemas, building SPAs with Backbone/Ember, and implementing RESTful Node.js/Express backends.

Node MongoDB Backbone.Js Ember.Js JavaScript REST APIs Functional Programming

Internet Application Developer

Tencent Cloud

Jan 2013 - Jan 2016 (3 years)

Developed front-end applications using React and Redux, added Webpack HMR, and maintained/modernized legacy server-side code to restore and improve functionality.

React Redux Webpack Hot Module Replacement Legacy Code JavaScript