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Member since May 21, 2019
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Mobile app developer 10+ years experience with mobile app and website development. Strong skills with Swift language, objective-C, Angular-JS, Javascript, PHP, UI/UX design, wire-frame prototyping, Analysis of requirements, Web services and backend development. I am an expert programmer that has knowledge writing efficient and fluent code. Working with many fortune 500 companies on private development projects I have learned a lot in my technical career and found that I have more value as a freelancer. I would like to bring this value to you and make your project successful. My work speaks for itself and I have many successful projects completed. I will work with integrity and transparency while delivering results in a timely fashion. Thank you for your time and consideration. I'm flexible with my working hours and am happy to work closely with any existing freelancers you work with. Best regards. Thank you!
$35 USD/hr
28 reviews
  • 93%Jobs Completed
  • 98%On Budget
  • 98%On Time
  • 11%Repeat Hire Rate


Recent Reviews

  • image of Geoff K. Project for Rolland K. -- 2 $300.00 USD

    “like always solid work!”

  • image of Elad S. Java Demo Project $370.00 CAD

    “Great work. Delivered on time.”

  • image of Niels J. Project for Rolland K. €125.00 EUR

    “The second time I worked with Rolland. Again, very happy with the results and with his clear communication. I highly recommend him to others.”

  • image of Geoff K. Project for Rolland K. $90.00 USD

    “solid work, delivers quickly”

  • image of Vamshi K. Project for Rolland K. -- 2 $50.00 USD

    “Want to work in future also.”

  • image of Vamshi K. Project for Rolland K. $100.00 USD

    “Excellent work ethics, he delivered more than what I required also in very less time, thank you Rolland.”


Project Manager and Senior Full Stack Developer

Jan 2015 - Mar 2019 (4 years)

I have developed many project as project manager and senior developer remotely

Mobile and Web Development

Sep 2009 - Nov 2014 (5 years)

Developed Mobile(Android & iPhone) and Web applications

Web Development

May 2006 - Jul 2009 (3 years)

I have developed YangLao, Building, Real Estate Project With [login to view URL], Java, Spring MVC, Spring Boot and Wordpress.



2000 - 2005 (5 years)


Bachelor’s Degree in Computer Science (2006)

University of Beijing China

Bachelor’s Degree in Computer Science


  • PHP Level 1


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