Image de profil de chengjin880528
Drapeau de China Huludao City, China
Membre depuis 10 février 2017
2 Recommendations


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✅ Awesome quality delivered, Every time ✅ On Time Delivery ✅ Complete Confident ✅ 7+ years Experience ✅ Great Communication ✅ 100% Satisfaction Guaranteed My skills: - Unity3D, C#, Swift, Objective-C, Java, - React native, react.js, redux,nativebean - Virtual Reality ( HTC Vive, Oculus Rift, Google Cardboard, Google Daydream, Samsung Gear VR) - Augmented Reality ( ARKit, Vuforia, EasyAR, Wikitude, ARToolKit, Kudan, Tango) - Mixed Reality ( Microsoft Hololens, etc) - App Store submission process - RESTful API integration - Social network integration (Facebook, Twitter, Instagram, Google+, LinkedIn, Youtube APIs) - Push notification implementation - In-App purchases implementation - Subscriptions implementation - GPS location processing - Firebase - Photo/video/audio management (capturing, editing and sharing) - Backend services (Amazon Simple Storage Service (Amazon S3), Firebase, Parse,Parse Cloud Code) - Payment services (Stripe (implemented a marketplace using Stripe Connect))
$38 $ US / h
6 commentaires
  • 71%Travaux complétés
  • 100%Dans le budget
  • 100%À temps
  • 13%Taux de réembauche


Commentaires récents

  • image de tugrasahiner Creating a Virtual Reality menu for an existing mobile app $155.00 USD

    “Li A. is a changing name. Do not trust him/her and never waste your time with him/her. While everything was fine at the beginnging, this freelancer insisted to start the job by an initial payment. Normally I don't but I trusted and proceed with a payment. Then, a huge silence. First changed the name to something else, then changed the photo into a guy then into a girl. Finally stated that (s)he is sick. Completely waste of time. Just stay away my friends.”

  • image de puhumight 3d cad model implementation with google tango (augmented reality android app) $27.50 USD

    “The project is not completed according to the dispute”

  • image de elapps Project for chengjin880528 -- 3 $500.00 USD

    “James is good at what he does. Great work!”

  • image de tfrazzz Project for chengjin880528 -- 2 $50.00 USD

    “3rd job they have done for me and I am really happy about it! They are a pleasure to work with. Easy to get things done and relay fixes too. All of the stuff was done on time and professional. Thanks again! Highly Recommended!”

  • image de tfrazzz Project for chengjin880528 $50.00 USD

    “always amazing work with this developer. I come back for new projects all the time and I am always happy!”

  • image de tfrazzz BUILD BOX GAME OR UNITY CREATION! $100.00 USD

    “Great work and easy to deal with. Would use again!”


Mobile Manager

Oct 2016 - May 2017 (7 months)

- Managed the project, created the project plan, outlined tasks for each member to accomplish along with due dates to keep the team on schedule. - Oversaw the technical development of the team’s product, designed the prototype of the product and business model. - Ensured a customer research-centric approach to product development, identified the market opportunity, communicated with the angel investors.

Unity3D Game Developer

Apr 2015

Multiplayer Driving Simulator - Free Online Multiplayer Driving Simulator is the most extreme real time multiplayer car driving simulator on Apple Store. Drive a turbo sports car, crash it, drift it as fast as you can and burn the asphalt of the road with more people!!

Senior Mobile Developer

Mar 2015 - Aug 2016 (1 year)

At this company my main responsibilities are: Mobile applications development (iOS/Android platforms) for customers of company and for open-source solutions of company ; communication with customers; creating applications from the scratch; estimating of the projects.


Bachelor of Education

2005 - 2009 (4 years)

Bachelor of Engineering

2010 - 2014 (4 years)


Oracle Certified Expert - Java (2012)

Beijing University of Technology

Demonstrates expertise in professional Java programming. Examination requires practical and theoretical knowledge of Java development techniques and frameworks.

Appcelerator Titanium Certified Mobile Developer (2015)

California National University for Advanced Studies

IOS7,8 Developer Certificate


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