Hình đại diện của YouSheng
Cờ của China Shenyang, China
Làm thành viên từ Ngày 04 tháng 05 năm 2017
3 Đề xuất


Trực tuyến Ngoại tuyến
✪ 100% SATISFACTION & BEST QUALITY ✪ Main Expertise; - Design and develop Native iOS/Android applications using Swift, Obj-C, Java - Hybrid app development using React native, Xamarin Native & Forms, Ionic - Expert in OOP, Multi-Threading, Client/Server Programming, Database Programming, Networking - Building backend service using Php(Laravel, Codeigniter), Node.JS, Python. - Database Programming (MySQL, Sqlite, Realm, MongoDB, Dynamo, PostgreSql) - Social Media Integration, Geo-Location, GPS tracking, Payment gateway integration. - Cloud Backend service integration such as Firebase, AWS, QuickBlox, etc - Image/Video processing using OpenCV, OpenGL, 3rd party plugins. - High Web development skill in HTML5, Javascript, BootStrap, Php, Angular. - Server Management (AWS EC2, Digital Ocean, Heroku) - Source Version Control(Git/Bitbucket/SVN and etc) - Task/Team Management tool (Github, Trello, Jira, Slack) - Bug tracking system(Instabug, Bugsnag)
$50 USD/hr
36 nhận xét
  • 100%Công việc đã Hoàn thành
  • 99%Đúng ngân sách
  • 98%Đúng hạn
  • 21%Tỉ lệ thuê lại


Các nhận xét gần đây

  • hình của Justin T. Project for Jin Y. -- 6 $1587.00 USD

    “Jin has been a great help to me in all of my projects. I have no need to look for any other developers thanks to his help.”

  • hình của Johannes T. Mobile development $3500.00 USD

    “The work with Jin was excellent, good communication, work delivered as expected. Will definitely hire him again for future projects”

  • hình của dan24993 Project for Jin Y. $2100.00 USD

    “Definitely one of the best developers I've had the opportunity to work with. From the beginning to the end of the project he has been 100%. He knows the technology well, knows how to write cost fast and effective, and is great at communicating. He is an experienced, diligent and hard working programmer. He responds quickly to all requests and at all times conducts himself as a true professional. On a personal level there are few individuals that I have met in my life time that are as honest and trustworthy as Jin YouSheng. I highly recommend him to anyone who want to get the job done right, and I'll definitely hire him again!”

  • hình của Justin T. Project for Jin Y. -- 5 $1600.00 USD

    “I have very much enjoyed my working relationship with Jin. Time after time he has impressed me with his work and speed. I will not be looking for any other developer anytime soon.”

  • hình của Omaralawar Project for Jin Y. $200.00 USD

    “speaks good english and easy to communicate”

  • hình của Maxxen iOS & Android App - Development €4500.00 EUR

    “It was a pleasure working with Jin. He not just delivers on time and budget, he also gave us good advices through the development process. After we changed some functions for the app he directly implemented it. The communication also went perfectly, he was always reachable and friendly. His long experience in development makes him to my number #1 choice when I have more projects to be done. Highly recommend Jin Y. to all!”

Trải nghiệm

Senior Software Engineer

Sep 2010 - Jun 2014 (3 years)

SoftWare Development, Service & Consulting and Technical Support.

Giáo dục

Bachelor of Computer Engineering

2006 - 2010 (4 years)

Bằng Cấp

Graduation certificate (2010)

Liaoning University

Graduation certificate of the Liaoning University

Các xuất bản

Semantic validation of environmental observations data Environmental Modelling and Software.

In this paper, we focus on one such language, the Water Data Transfer Format (WDTF), and present an approach for validation of WDTF data contents. We show that by using Semantic Web technologies, we can express those constraints not captured by WDTF and check their consistency with respect to data through a query reduction technique that allows existing reasoners to be used for data validation.

Chứng nhận

  • iPhone Development 1
  • US English Level 1
  • Android 1
  • PHP Level 1
  • Preferred Freelancer Program SLA

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