Изображение профиля keiyang
@keiyang
Флаг China Dandong, China
На сайте с 22 декабря 2018 г.
6 Рекомендации

keiyang

Онлайн Офлайн
I've rich experience in developing powerful, highly usable web applications and mobile apps that solve business problems, attract users and reinforce your brand. I've developed and updated dozens of successful applications for clients in a variety of industries, ranging from startups to 50 companies. I'm always open to new ideas and discussions and respect other points of view while always trying to find win-win solutions for existing problems. Frontend Development Expertise: - HTML5, CSS3, Bootstrap4, Javascript, jQuery - Node.js, React/Redux, Angular/NgRx - MEAM / MERN stack - React Native (expo-cli, react-native-cli) - Ionic - Flutter Backend Development Expertise: - Firebase - GraphQL - Node.js + Express + Sequelize ORM + Passport + MySQL/MongoDB - Ruby on Rails + PostgreeSQL/MariaDB - Java + Spring boot + JPA + Hibernate + PostgreSQL/MSSQL server Please feel free to contact me to discuss how I can help! Sincerely
$30 USD/hr
11 отзыва(-ов)
4.5
  • 100%Выполненные работы
  • 100%В рамках бюджета
  • 100%Своевременность
  • 8%Рейтинг повторного найма

Портфолио

Последние отзывы

  • изображение Wei W. Looking for React Native expert $90.00 USD

    “Great guy. I will hire again. Thanks.”

  • изображение Al W. Convert React Web app to React Native app $1050.00 USD

    “excellent worker. very knowledgeable and persistent”

  • изображение Pollen T. UI fix for mobile app $400.00 SGD

    “He is very responsive and helpful with suggestions. Also, help us out with extra out of scope work without complaints​. Will hire again.”

  • изображение Hamka N. Project for Xiang G. $100.00 USD

    “Good to hire again”

  • изображение Louise B. C / C ++ Software Development $112.00 USD

    “My first job with him was okay. communicative, always online and answers all the questions I had. We will do other work together.”

  • изображение Greg G. Extract Files from Zip File $30.00 USD

    “GREAT!!! VERY FAST”

Опыт работы

Software engineer and application developer

Mar 2011 - Nov 2018 (7 years)

I am working in this field software engineering field for 7 years. I can develop all app of mobile apps and Desktop application and reverse application.

Образование

Software Engineering engineer

2006 - 2010 (4 years)

Сертификаты

  • Preferred Freelancer Program SLA
    97%

Верификации

  • Соединить с Facebook
  • Предпочтительный фрилансер
  • Оплата подтверждена
  • Телефон подтверждён
  • Личность подтверждена
  • Электронный адрес подтвержден

Мои топ-навыки

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