Richard Han

La Habra, United States





Senior Full Stack Developer & Blockchain Developer
Since March 2021 Upwork, Freelancer Online

  • Automated CI/CD processes to improve efficiency, assisting the DevOps team.
  • Created 40 complex UI components with React, Vue, TypeScript, and SCSS, resulting in a 25% increase in website interactivity and engagement.
  •  Developed automated solutions using Core Java, including web interfaces with HTML, CSS, JavaScript, and Web services.
  • Implemented bookmarking, filters, and validations for page routing capabilities, resulting in a 15% increase in website functionality and user satisfaction.
  • Streamlined page building and enhanced design by integrating Django CMS with wagtail integration, resulting in a 20% improvement in website development efficiency and faster turnaround times.
  • Created 65 complex UI components with React, Vue, TypeScript, and SCSS, resulting in a 30% increase in website interactivity and engagement.

Senior Full Stack Developer
From May 2019 to March 2021 Amalgama NY, United States

  • Led a web development team of 7+ members and managed projects using Git.
  • Leveraged Python/Django and PostgreSQL to deliver scalable full-stack software solutions, resulting in a 25% increase in website traffic and a 15% increase in user engagement.
  • Implemented full-text search of articles using Elasticsearch over 100,000 data points.
  • Executed frontend screens using React.js with pre-defined components from NPM and Redux library, resulting in a 30% reduction in development time and faster timeto-market.
  • Launched e-commerce projects built with MERN stack, resulting in a 25% sales revenue increase within 5 months.
  • Interacted with testing team, scrum masters, and business analysts to identify and address issues.
  • Collaborated with other backend development teams to optimize existing API calls, resulting in a 15% improvement in system performance.

Full Stack Developer
From June 2016 to May 2019 Pieoneers BC, Canada

  • Contributed over 20+ projects using React, React Native, Ember.js, and Node.js with both of JavaScript and TypeScript.
  • Developed and maintained over 15+ back-end applications using Java, MySQL, Redis, MongoDB, Google Firebase and several other technologies.
  • Integrated a back-end application with external API to import data for products by their barcodes; improved user count by more than 45%.
  • Added a Hot module replacement plugin to Webpack, saving 20 hours per week of development.
  • Developed smart contracts to test new blockchain features that boosted product sales by 30%.
  • Worked mostly with startups, in small teams and involved in all of the project lifecycle phases leading to 25% increase in development.


Django, Docker, FastAPI, Flask, Fullstack Development, GraphQL, JavaScript, ReactJS, Redux, TensorFlow, Vue.js

Joined: April 2023