Profile image of JeffLee21

Jeff Lee

and invite this freelancer
Flag of China Guangzhou, China
It's currently I'm Online! I'm Offline
Member since July, 2012

Embedded system developer My team leads new frontiers on the Android/iOS world. We are experts in multi-platform programming using QT solution developer and system administrator.

4.8 / 5
7.1 / 10

@JeffLee21

  • 81%Jobs Completed
  • 100%On Budget
  • 96%On Time
  • 19%Repeat Hire Rate

Recent Exams

  • Freelancer Orientation Top 1%
    90%
  • Network Programming 1 Top 4%
    83%
  • C 1 Top 12%
    85%
  • US English Level 1 Top 39%
    90%
  • Unix Level 1 Top 73%
    75%

Top Skills

  • Linux
  • C++ Programming
  • Android
  • Software Architecture
  • C Programming
  • PHP
  • Mobile Phone
  • MySQL
  • Windows Desktop
  • Engineering
  • iPhone
  • Embedded Software
  • Java
  • C# Programming
  • Microsoft
  • OpenGL
  • Software Development
  • Python
  • Graphic Design
  • Javascript
  • Visual Basic
  • Translation
  • System Admin
  • Mac OS
  • Apache
  • UNIX
  • Visual Basic for Apps
  • Windows API
  • Ubuntu
  • XML
  • Delphi
  • Data Entry
  • Electronics
  • Excel
  • Photoshop
  • iPad
  • HTML
  • jQuery / Prototype
  • Windows Server
  • Japanese
  • Microsoft Office
  • ASP
  • JSP
  • J2EE
  • Ruby on Rails
  • AJAX
  • Game Design
  • SQL
  • Wordpress
  • Animation
  • Microsoft Access
  • Cisco
  • Virtual Assistant
  • Objective C
  • Electrical Engineering
  • IIS
  • Chrome OS
  • Shell Script
  • Photoshop Design
  • Google Earth
  • Symfony PHP
  • Firefox
  • Unity 3D
  • Android Honeycomb
  • OCR
  • MVC
  • Korean
  • Simplified Chinese (China)
  • VPS
  • ASP.NET
  • SQLite
  • VB.NET
+ show more

Recent Reviews

Experience

System administrator

Apr 2006 - Sep 2012 (6 years)

I was a administrator of server comprising mail, ftp, samba, firewall. I was a team leader developing embedded linux.

Education

Master

1996 - 2000 (4 years)

Certifications

Redhat Linux 9.0 General Administrator (2012)

Publications

Performance enhancement for streaming service

Badges

  • The Achiever

    Accept 50 projects.
  • Millenium Proposal

    Bid on 1000 projects.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • The Regular

    Log in every day for 1 week.
  • The Multi-tasker

    Complete 40 projects.
  • The Cap-tain!

    Reach the level 20 level cap!
  • Warren Buffet

    Complete a project worth over $1000 USD.
  • The Trader

    Convert more than $1000USD (or equivalent) to another currency.
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • Smooth Operator

    Complete 10 projects on time.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Collector

    Reach a balance of 5,000 credits.
  • The Spartan

    Bid on 300 projects.
  • The Economist

    Complete 10 projects on budget.
  • Mover and Shaker

    Create 50 Milestones.
  • Feedback Guru

    Receive 10 reviews
  • The Critic

    Post 10 Reviews.
  • High Roller

    Complete a project worth over $500USD (or equivalent) on Freelancer.com.
  • Proven Identity

    Complete your Email, Phone and Payment verifications.
  • Pro-Profile

    Complete your Profile 100%.
  • Smart Money

    Create 10 Milestones.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • Know-It-All

    Pass a freelancer orientation exam
  • All Star

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

    Complete your first project.
  • The Speculator

    Sponsor 1 bid.
  • Look-At-Me

    Highlight 1 bid.
  • The Seeker

    Bid on 20 projects.
  • The Verified

    Verify your payment method
  • The Perfectionist

    Edited a bid.
  • Millenium Proposal

    Bid on 1000 projects.
  • Warren Buffet

    Complete a project worth over $1000 USD.
  • The Collector

    Reach a balance of 5,000 credits.
  • Mover and Shaker

    Create 50 Milestones.
  • The Achiever

    Accept 50 projects.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Multi-tasker

    Complete 40 projects.
  • The Cap-tain!

    Reach the level 20 level cap!
  • The Trader

    Convert more than $1000USD (or equivalent) to another currency.
  • Smooth Operator

    Complete 10 projects on time.
  • The Spartan

    Bid on 300 projects.
  • The Economist

    Complete 10 projects on budget.
  • High Roller

    Complete a project worth over $500USD (or equivalent) on Freelancer.com.
  • Smart Money

    Create 10 Milestones.
  • Know-It-All

    Pass a freelancer orientation exam
  • All Star

    Receive a 5-star rating for a project.
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • The Regular

    Log in every day for 1 week.
  • Fast Responder

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

    Win a project and accept the offer.
  • Feedback Guru

    Receive 10 reviews
  • The Critic

    Post 10 Reviews.
  • Proven Identity

    Complete your Email, Phone and Payment verifications.
  • Pro-Profile

    Complete your Profile 100%.
  • US English Qualified

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

    Complete your first project.
  • The Speculator

    Sponsor 1 bid.
  • Look-At-Me

    Highlight 1 bid.
  • The Seeker

    Bid on 20 projects.
  • The Verified

    Verify your payment method
  • The Perfectionist

    Edited a bid.