Full Stack Engineer

I am Feilong Cui(崔飞龙) and versatile full stack engineer with experience in front-end and back-end development. Proficient in a variety of programming languages and tools, including HTML, CSS, JavaScript, TypeScript, React, Angular, PHP, Node.js, and Python. Passionate about developing user-friendly web applications that are both aesthetically pleasing and functionally sound.

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Quality features

Services

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Web Development

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Back-end Development

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Mobile Development

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Services

Web Development

Provide responsive websites which are displayed properly on all screen sizes and in all the browsers. You don’t have to worry if your users are on the PC, tablet or the mobile. I make sure whichever browser they use on any device, the experience is streamlined and awesome.

Custom Front-end Web development

Implement cutting-edge front-end development technologies and advanced solutions to design intuitive, rich, and high-performance apps.

Single Page Apps development

Provide single-page application development services to boost performance and enhance UX flexibility.

Services

Back-end Development

Create a custom back-end solution quickly and with care to every code piece. By using only cutting-edge technologies and programming languages (JavaScript, TypeScript, PHP, Python). I dive deep into your app’s business logic and synchronize all data across multiple platforms. I make sure your application is reliable, secure, covers all needs of end-users, and can be seamlessly integrated with third-party services.

Back-end for your mobile app

Build mobile back-end apps across multiple devices and platforms. I create native iOS/Android, hybrid, cross-platform apps while utilizing different technologies and programming languages like Java, Objective-C, Swift and React native.

Back-end for your front-end app

Provide website backend development services, including creating web architecture from scratch or reengineering the existing one. I will modernize your existing backend structure without disrupting the front end.

API development and Integration

Build a custom API to amplify your existing software or connect it with third-party services. Integrate your interface with other apps, devices, and business systems seamlessly and hassle-free.
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Services

Mobile App Development

Provide high quality standard mobile app of any category. I am capable of creating apps for multiple-platforms like iOS, Android and cross-platform solutions in React Native.

Native Mobile App Development

I can build high-quality native apps for both Android and iOS systems aligned with your business and security requirements.

Hybrid Mobile App Developmentt

Cross-platform mobile apps are developed to function for multiple mobile platforms like iOS, Android, etc. Without changing the codebase.

Work Experiences

2022-2023

Frontend Engineer

TellUsStory
Stockholm, SE
  • Successfully developed and implemented a responsive user interface for a web application using React, Next.js, CSS, and JavaScript, resulting in improved user experience and increased user engagement.
  • Optimized website performance by implementing efficient coding practices and leveraging browser caching techniques, leading to a significant decrease in page load times and improved overall website speed.
  • Collaborated with cross-functional teams, including designers and backend engineers, to deliver seamless user experiences and ensure the smooth integration of frontend components with backend systems.
  • Implemented a modular and reusable component library using React and CSS, resulting in faster development cycles and enhanced code maintainability across multiple projects.
  • Improved accessibility standards by incorporating ARIA (Accessible Rich Internet Applications) attributes into web components, ensuring compliance with WCAG (Web Content Accessibility Guidelines) and providing an inclusive user experience for individuals with disabilities.
  • Conducted code reviews and provided constructive feedback to fellow team members, fostering a culture of continuous learning and improvement while ensuring high-quality code standards.
  • Actively researched and evaluated emerging frontend technologies and trends, such as React hooks or CSS-in-JS libraries, to identify opportunities for enhancing development processes and keeping the team up to date with industry best practices.

2021-2022

Full Stack Engineer

Healthcare company
San Francisco, CA
  • Migrated the Agora SDK v3.x to v4.x in the existing Angular project
  • Collaborated with other developers on the team to implement functionality across multiple platforms (web, iOS)
  • Optimized existing code to improve website performance
  • Successfully implemented features such as video calling and GA4 in the Angular project
  • Implemented unit tests to ensure code quality before submitting pull requests to GitHub repository

2018-2021

Full Stack Web Developer

PB Group Inc.
Toronto, CA
  • Worked with a team of developers to create a web application
  • Developed a web application using React, Node, Cloud Firestore, and DynamoDB
  • Developed a web application using Angular, Node, MongoDB, S3, and Socket.io
  • Developed a web application using React, TypeScript, Node, and PostgreSQL
  • Created a RESTful API using NodeJS and Express for a web application
  • Developed front-end application using React, HTML, CSS, and JQuery
  • Successfully implemented features such as video calling, an online signature, JSON Web Token, and social media login

2016-2018

Full Stack Mobile Developer

Ordering, Inc.
Berlin, DE
  • Developed Android applications for the online ordering system using Java, and React Native
  • Designed and implemented scalable architecture to support multiple projects with high performance requirements
  • Successfully Implemented features such as payment system, background tasks, GPS navigation, optimized routes, push notifications, and social media login
  • Developed front-end user interface using React Native and JavaScript for iOS and Android mobile applications
  • Worked with a team of developers to implement the online ordering system

2010-2016

Full Stack Developer

Shenyang Wenzhou Technology Co, LTD
Shenyang, CN
  • Designed and developed RESTful APIs for mobile apps to connect with the backend systems using Java Spring Framework and MySQL
  • Designed and developed RESTful APIs for mobile app to connect with the backend systems using Laravel and MySQL
  • Designed and developed RESTful APIs for web application and mobile app to connect with the backend systems using Codeigniter and MySQL
  • Developed iOS and Android mobile applications from scratch according to provided specifications
  • Developed front-end user interface using React Native and JavaScript for iOS and Android mobile applications
  • Developed front-end and back-end code for iOS and Android mobile applications using React Native, Java, and other programming languages
  • Successfully implemented features such as the payment system, a camera module, SMS verification, push notifications, and a social media login
  • Gained hands-on expertise in HTML, CSS/Less/Sass, JavaScript, TypeScript, Java, Objective-C, Swift, PHP, JQuery, Bootstrap, Angular, Codeigniter, Laravel, Python, modern frameworks and libraries

What do I do?

My Works

Feel free to get in touch to discuss your project

Contact Me