Avatar of Leo Jin.
Leo Jin
Fullstack Engineer
Avatar of the user.

Leo Jin

Fullstack Engineer
- 精通 HTML5、CSS3、JavaScript 和 jQuery - 对 ReactJS 及其生态系统(Redux、React Router 等)拥有丰富的经验 - 丰富的iOS和Android原生平台移动开发经验 - 熟悉 NextJS 用于服务器端渲染和构建静态网站 - 用于构建可扩展且高效的后端 API 的 NestJS 知识 - 使用前端构建工具(例如 Webpack、Babel)的经验 - 了解响应式设计原则和移动优先开发 - 较强的解决问题和调试能力 - 了解版本控制系统(例如 Git) - 熟悉 CSS 预处理器(例如 Sass、Less) - 了解跨浏览器兼容性和可访问性标准 - 优秀的沟通和协作能力 - 能够在敏捷开发环境中工作
Logo of the organization.
University of Tartu
Vientiane, Laos

Professional Background

  • Current status
    Ready to interview
  • Profession
    Front-end Engineer
    Web Developer
    Node.js Developer
  • Fields
  • Work experience
    4-6 years (6-10 years relevant)
  • Management
  • Skills
    React JS
    React Native
    React Hooks
    JavaScript / ES6 / jQuery
    JavaScript Frameworks
    JavaScript Coding
  • Languages
  • Highest level of education

Job search preferences

  • Desired job type
    Interested in working remotely
  • Desired positions
    Fullstack Developer / Frontend Developer / Backend Developer / Mobile Developer
  • Desired work locations
  • Freelance
    Full-time freelancer

Work Experience

Remote Fullstack Developer

Feb 2023 - Present
I work as a freelancer at upwork.com • Find job opportunities as a remote full-stack developer. • Implement iOS and Android projects using native platform languages ​​like Swift and Java. • Implement some projects related to WordPress skills. • Implement some projects related to e-commerce systems. • Build and upgrade internal tools and libraries to improve developer experience.

Fullstack Developer

Aug 2021 - Dec 2022
1 yr 5 mos
Mountain View, CA, USA
I worked as a Full stack Developer at ThePlayersCompany. • Created React Native platform for iOS & Android versions to provide tutorials for users. • Implemented usable controllers to maintain each view. • Implemented GraphQL for database managing using Amplify. • Worked on NodeJS, AWS S3 for the backend managing. • Build and upgrade internal tools and libraries to improve developer experience. • Build back end REST API and OAuth with NodeJS & Express. • Rest based applications were created to enhance the user interface with regard to interactivity. • Worked on native platforms of mobile application using Swift and Java. • Extensive usage of JavaScript, JSON and ES6. • Completed the both platforms of application.

Senior Fullstack Developer

Nifty Gateway
Nov 2020 - Jul 2021
9 mos
San Francisco, CA, USA
I worked for this company to build a NFT marketing site. • Advocated new technologies and best practices within the team. • Built a rich set of development tools to improve developer experience (DX), such as chrome extension, cli tools, custom CI pipeline • Build backend REST API and OAuth with Node JS, Express JS • Implemented Routers & History in SPA. • Worked on Rust and Solidity platform developing. • Skilled in leading React JS framework to build high-quality, scalable and reusable components and Front-end solution. • Worked on Big data to generate the Rest API and integrated that API to Client side code using NodeJS and ExpressJS. • Used Git version control and interacted with Testing team and business analysts for fixing the issues and module bundler rollup. • Interacted with Customers and Development teams to fix the issues and performed the system testing, regression testing for complete UI after fixing the issues which were reported by testing team

Blockchain Developer

Xenia Capital
Feb 2020 - Oct 2020
9 mos
Cape Town, South Africa
I worked as a Blockchain Engineer at Xenia Capital company. • Working on the formation and maintenance of innovative blockchain technology, and conducting expert market research. • Designed and constructed strategic connections with possible investors and corporate collaborators, and developed new concepts. • Partnered with peers from various divisions on the development and development of new software packages. • Using the solidity framework features, optimized the smart contract program and boosted performance by 20%. • Rest-based applications were created to enhance the user interface with regard to interactivity. • Assisting the chief operating officer with day-to-day operational duties. • Worked to develop and implement cost-effective purchasing strategies in blockchain.

Frontend Developer

Nov 2018 - Jan 2020
1 yr 3 mos
Tomsk, Tomsk Oblast, Russia
- Developed and maintained responsive web applications using ReactJS, NextJS, and NestJS - Collaborated with designers and backend developers to implement and iterate on user interface designs - Implemented state management using Redux and ensured data consistency across the application - Utilized React Router for efficient navigation and routing within the application - Integrated with backend APIs developed using NestJS to fetch and update data - Optimized frontend code for performance and scalability - Conducted code reviews and provided constructive feedback to peers - Implemented and maintained frontend testing frameworks (e.g., Jest, Enzyme) - Worked closely with the product team to understand user requirements and translate them into technical solutions - Stayed updated on emerging frontend technologies and best practices

Frontend Developer

Dunice, Taganrog
Oct 2015 - Dec 2018
3 yrs 3 mos
Taganrog, Rostov Oblast, Russia
- Developed and maintained web applications using PHP, JavaScript, and NodeJS - Collaborated with cross-functional teams to gather requirements and deliver high-quality solutions - Implemented secure and scalable backend services using PHP frameworks like Laravel and Symfony - Utilized JavaScript frameworks like React and Vue for frontend development - Integrated with AWS services like EC2, S3, Lambda, and DynamoDB to build scalable and resilient applications - Implemented serverless architecture and deployed applications on AWS - Designed and developed RESTful APIs for seamless integration with frontend applications - Optimized database performance and ensured data integrity - Conducted code reviews and provided constructive feedback to peers - Worked closely with QA teams to ensure high-quality deliverables - Stayed updated on emerging technologies and best practices in PHP, JavaScript, NodeJS, and AWS


Logo of the organization.
Bachelor’s Degree
Computer Science
2010 - 2014
I major in computer science at The University of Tartu in Estonia. Expected Graduation: March 2014