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Chengri Han

and invite this freelancer
Flag of China Beijing, China
Member since May, 2013

Thanks for your visiting my profile overview! I'm a PHP & C/C++ developer. I've experienced in 1) Codeigniter based or General Web Site 2) Network & Security application 3) Windows Desktop & Cocoa Mac OS application. If you find a new programmer for above field work, just CONTACT ME! Thanks.

4.7 / 5
4.9 / 10

@unix515

  • 72%Jobs Completed
  • 99%On Budget
  • 99%On Time
  • 35%Repeat Hire Rate

Recent Exams

  • Employer Orientation Top 1%
    95%
  • C 2 Top 1%
    93%
  • Freelancer Orientation Top 4%
    80%
  • Network Programming 1 Top 4%
    83%
  • PHP Level 1 Top 13%
    78%
  • US English Level 1 Top 17%
    95%

Top Skills

  • Objective C
  • Mac OS
  • C++ Programming
  • C Programming
  • Cocoa
  • Socket IO
+ show more

Recent Reviews

Experience

unix515

Dec 2013

Education

Master

2003 - 2007 (4 years)

Certifications

Computer Science Expert (2007)

Publications

Network Security Expert

I have a Network Security expert.

Badges

  • Millenium Proposal

    Bid on 1000 projects.
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Smooth Operator

    Complete 10 projects on time.
  • Mover and Shaker

    Create 50 Milestones.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Regular

    Log in every day for 1 week.
  • The Spartan

    Bid on 300 projects.
  • The Economist

    Complete 10 projects on budget.
  • The Critic

    Post 10 Reviews.
  • Feedback Guru

    Receive 10 reviews
  • Smart Money

    Create 10 Milestones.
  • All Star

    Receive a 5-star rating for a project.
  • The Adventurer

    Complete your first project.
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Seeker

    Bid on 20 projects.
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • Pro-Profile

    Complete your Profile 100%.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • US English Qualified

    Pass the US English Exam (Level 1)
  • The Perfectionist

    Edited a bid.
  • Millenium Proposal

    Bid on 1000 projects.
  • Mover and Shaker

    Create 50 Milestones.
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Smooth Operator

    Complete 10 projects on time.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Spartan

    Bid on 300 projects.
  • The Economist

    Complete 10 projects on budget.
  • Smart Money

    Create 10 Milestones.
  • All Star

    Receive a 5-star rating for a project.
  • The Regular

    Log in every day for 1 week.
  • The Critic

    Post 10 Reviews.
  • Feedback Guru

    Receive 10 reviews
  • The Adventurer

    Complete your first project.
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Seeker

    Bid on 20 projects.
  • Pro-Profile

    Complete your Profile 100%.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • US English Qualified

    Pass the US English Exam (Level 1)
  • The Perfectionist

    Edited a bid.