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Jeff Lee

Expert solution developer

Username: JeffLee21

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Location: Guangzhou, China

Member since: July 2012



(59 reviews)

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3 users have recommended this freelancer.

My projects:

  • €80 EUR
    Profile image for Seller andreasfent



    very good freelancer

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
  • $190 USD
    Profile image for Seller ksearcy


    6 days ago

    Great freelancer that always delivers quality work. Will use again!

    Project Description:I am needing a photo of a product touched and depth added for use in a website. I have provided a view different views of the item as well as screenshot insert for the screen to be overlayed for simulated screen display...
  • $300 USD
    Profile image for Seller zaki1575


    9 days ago

    Will hire him again for my next milstone....don't disturb him, everyone.

    Project Description:Hi Bidders, This is a Proof-Of-Concept work. So the functionality is just at minimum level. I need to have an Android app that will be connected and then have the functionalities to administer the openWRT device...
  • $736 USD
    Profile image for Seller jongittoes


    Mar 19, 2014

    He had already done a very similar application, so I expected this to be straight forward. It wasn't and went way over time and still needs a lot of work to make it professional.

    Project Description:Create an Android VPN client application using the OpenVPN API. Client will request username and password, then verify details against our JSON web service. User will then have the option to choose the country and protocol (standard, UDP alternate, TCP)...
  • $400 USD
    Profile image for Seller ksearcy


    Mar 18, 2014

    Great freelancer. Will work with again

    Project Description:Design kiosk application on android platform with multiple screens.
  • $160 USD
    Profile image for Seller jarleadlog


    Mar 13, 2014

    JeffLee was very professional.Would work with again.

    Project Description:Backup mysql DB on single web server, Reinstall Mysql, Reload Data, make sure data is intact.
  • $1106.8 USD
    Profile image for Seller ksearcy


    Mar 7, 2014

    This freelancer did a great job. Project was done in a fast and timely manner. Will definitely hire again.

    Project Description:Make an android and iphone application to scan barcodes with camera and make purchases with an online account. Bidding for android or iphone applications separate will be accepted. 1. Need ssh comm channel with mysql database to communicate with db 2...
  • $250 USD
    Profile image for Seller dynamix404


    Feb 20, 2014

    Nice to work with, will hire again!

    Project Description:I need a tool written in C++ that is able to check for a specific file on my server and if the file exists, it should upload it to my ftp account or zip it and email it to me. If you decide to look into...
  • €318.4 EUR
    Profile image for Seller andreasfent


    Feb 18, 2014

    good job , works good .

    Project Description:Linux open source to be upgraded and modified , easy job looking to be do in 1 hour . PM for more details . Thank you
  • [Sealed]
    Profile image for Seller RichardMcM


    Feb 8, 2014

    thank you.good job.

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
    Jeff Lee has not completed any projects.
  • $631 USD In Progress

    Hi all,I need android mobile application for VPN services. The application should allow clients to use their account on their mobile device and thus allowing them to use our VPN services and be anonymous and protected while they surf in internet from their mobile device.I already have the required screens and design of the application (PSD). The application must support the following VPN protocols: PPTP, L2TP (pre-shared key) and OpenVPN. It should also communicate with the website through some REST web services from where it will receive data for user information, account info and etc. The application should be very similar to Hotspot Shield vpn application similar application of the main competitors are: final application package should be able to be published in the playstore so that the users can download and use it right on. The application should be supported on the latest Android versions (4.x) and if possible on the previous versions (3.x).The candidates should be able to provide some portfolio of their previous work. It will be a plus if they already have experience in building VPN clients and apps. More information and mock-up screens are available on request.Thanks and happy bidding.

  • $250 USD In Progress

    Add in-app payment to existing iOS and Android app for amounts of $5, $10, $25, $50.

  • $947 USD In Progress

    Requirement is for an app to run on both iOS and Android platforms. These will be available to customers via the App store and Play Store. I am after a visitor registration system.Person bidding must work with me to develop flow chart of the software before coding as it must be perfect. A detailed spec will be determined as we work through how the software is to work. - App must be made in a way to be compatible with multiple format of devices with different screen sizes. - Must allow to customer to enter their details- Notifiy person visiting- Allow for Printing of labels to label printer ( Must allow for different printer brands to work )- Allow for a signout feature using a barcode scannerDetails to be shared after selection as specs will be confidential. This will be an ongoing project with bug fixes and updates/upgrade required which will be extra work which can be chargable.We are looking for an excellent partner to work with.Please share with us your experience

  • $105 USD In Progress

    We have some picture frames received at different rate. Want to add scheduler in the Linux app/driver to that it can update LCD at fix rate.

  • $210 USD In Progress

    You need to compile the famous Open-Source project MPlayer located at for Android using NDK.Once compiled as library, you need to provide a sample Android application that can play MPlayer supported video/audio files using this library. It should have functionality of play, pause, stop and seek.Video playback must be smooth and synchronous with Audio. The sample should run smoothly on all capable devices like Samsung Galaxy S2 I9100 (I will test it on this device).Entire source code is needed with step by step compiling and library usage instructions.

  • $2100 USD In Progress

    Commence on 3/12/13Delivery on 23/12/13$210015% Commencement 15% Application-level functionality prototype complete 10% Graphical implementation complete 15% Cloud linkages complete 10% Bug-fix changes implemented 30% Google Play store approval attained.

  • $200 USD Today

    I am looking for somone to code me a Telnet Bruteforcer in C, i need it to use a range of IPS, usernames, and passwords.This is for work at the datacenter i have been Pentesting.

  • $400 USD Yesterday

    I"m looking to rebuild TP-Link TL-WR703N into a wifi client detection tool to be used in retail settings, via openWRT.The TP-Link TL-WR703N should detect all wifi clients in the retail store and send this data (either through ethernet or 3g dongle) to our server, to be used for dashboards for retailers. data to be recorded is:1) the ID for each smartphone2) how long time the smartphone is in the store (time of first time its detected + time of last time its detected)

  • $21 USD/hr Yesterday

    We"re looking for an Android NDK specialist for an small-scale project which may be followed by ongoing support for some time.Reasonable English is mandatory.-SP

  • $210 USD Yesterday

    [This is a Private Project. You must be logged in to view the Project Description]

  • $526 USD Yesterday

    We want to develop a VPN solution, with custom IP rules, with a client-side where a user can define his own websites, and analyze traffic.

  • $690 USD 2 days ago

    I"d like you to develop an alternative to Wingpanel for Linux Desktop running X window.That"s basically a panel which sits at the top of Linux desktop screen, shows date and some icons.It will be written in C or C++ or whatever, which can be compiled in Linux using Makefile. No java, no python, no such things, please.See attached pictures to get an idea how it should look like.Features:- it must not depend on any libraries. If you essentially need it to depend on something, like GTK+3, we can discuss that, but I prefer if it"s absolutely standalone without any dependencies. It will of course depend on Xorg libs and header files, no problem in that. However the panel should work even if only pure Xorg is installed in the system.- configurable in a text config file, no GUI for config at the moment- automatically adjusts its size based on its length- always stays at the top of the screen/desktop- dragging the panel by user can move it left & right, but not up/down- possibility to configure it to stay on top above any other windows- possibility to configure it to auto hide, and auto-show when mouse touches the top screen edge- the application will not be square, so you"ll probably need to resolve transparency- if the panel is hiding, there will be animation (slide up). Similarly showing will slide down.Shows:text, iconsIt will be your task to also design the configuration file format, so it allows custom look, for example some users will need three textual informations there (like CPU usage, date, free RAM), while some other users will want to see icons first and date at the end, etc.Now how the panel is populated by text and icons. This is the tricky part.The user will be able to configure the panel in configuration file. This file will be of variable size, thus some users may configure it just to show date, some other users will need icons, lots of other text, and so on.All elements in the panel are a result of running bash commands mentioned in the configuration file. For example, if the first element should display current date/time, the user will simply configure that the output of "date" linux command will be printed there. If an icon is to be It should be also possible to configure how often the command gets re-executed to refresh the status. It may be an integer in seconds (for example the date/time area will need to be updated only once per minute), or it can be configured as "hover", here the item will be updated every time user hovers mouse over it, or it can be set to "click", where the item will be updated on click.Clicking any of the element will run a command configured by the user. Thus, if user specifies that "calendar" application is started when he clicks on the date, it will simply do that. So you need to keep this in mind in designing the config file format.It needs to be also possible to "ping" the panel somehow (either using socket or pipe or something), so other applications can communicate that the panel needs updating (refresh).Icons will be 16x16px.Examples:- date will be displayed by "date" linux command, and will need to refresh once per minute- icon for sound volume will be diplayed accordingly to output of "sndvol" script, which simply prints full path to the icon file as output, nothing else.There can be one configuration file for pannel settings, and another configuration file for items.Proposed configuration file for panel:[general]autohide=falseProposed configuration file for items:[date_section]command=date +"%m-%d-%y"update=60onclick=/sbin/calendar[sound_volume_section]command=sndvol -vupdate=hoveronclick=/sbin/alsamixerThe panel should listen on a socket or pipe or something, and if it receives command "update", it updates all elements. If it receives command "update sound_volume_section", it updates only that part [sound_volume_section]Example design is attached.License: your software will be released under GNU GPL license.

  • $15 USD/hr 2 days ago

    Help with some basic bash scripting in Ubuntu. I pay $15 an hour. You must speak fluent English. This is a small project and you will be helping me complete it. It should not take more than a couple hours at max. Please be very comfortable with bash scripting in linux.

  • $74 USD 2 days ago

    Hello, -i have an "Ubuntu Server 12.04 LTS" (VPS Server) -instead of root i use a user to install my programms (for safety reasons)-i already installed Wine so that i can install an Windows Application on ubuntu -now i need to do the following things:1)For the this Windows Programm i need the Font "wingdings.ttf"...i copied this font already to my server (from my windows client with WinSCP)2)It is also necessary that this .exe starts automatically if the server restarts etc....and it also has to start even without a user does a manual i think we need a secure way for a autologon of a user and then also automatically the .exe can start.3)Monitoring. ...i want to get an email or sms when my ubuntu vps server is not reachable. Please help! I think if you are a PRO this shouldnt be a problem anyway.

  • $1400 CAD 4 days ago

    Please see attached file for requirement details.

  • $526 USD 7 days ago

    I need to be able to detect the presence of Wifi devices (like smartphones) near a location to do a rudimentary count of people attending a retail location. I do not need to triangulate position. Instead, I just need to record to a MySQL database every minute these fields:Datetime, MAC address, signal strengthI understand that some wireless routers can be placed in "monitor mode" to detect MAC addresses of those devices that even are not connected to the router. (This is important. I do not want just a list from the DHCP of connected MAC addresses. This needs to show all devices within the range whether they are connected or not)I would like to have a recommendation of a router to purchase from an accessible web distributor like,,, etc. And I would like to receive instructions on how to setup and install it. Please program it for use on a windows platform using C++ or PHP or .net or something similar. Please communicate your language preference in your response. The raw code of the program must be shared as well.

  • kr126 SEK/hr 8 days ago

    Need help from a android developer to just compile/make a build of a opensource code and just have it poitning against my backend server.

  • $220 USD 8 days ago

    Based on existing API, I need a coder to create a small application. The application should be able to connect to local hosted API, login with userid / password and fetch product information and customer information. All data should be saved in XML on remote FTP. The application should have a small GUI to enter:FTP hostnameFTP folderFTP usernameFTP passwordandAPI AdministrationAPI UsernameAPI PasswordFull toolkit with examples available upon request. Deadline: tomorrow. :-| But we can add new features + extra work for new milestone next week.

  • $21 USD/hr 8 days ago

    I need a PHP Socket that listen a port and receive connection from a GPS tracking device. It needs to create a child socket to stay the connection opened, so I can send back some commands if I need.It needs to save all information in mysql database. It need to be fast and stay connected.

  • $150 USD 8 days ago

    Need a freelancer to write C code on linux box with the following high level attributes1. should run continuously like a server2. Route IP packets from internal interfaces to external interfaces and vice versa3. Configure rules using config files

  • $421 NZD 9 days ago

    We need someone to optimize our PHP log by looking at the slow query log and speed up our database as well. Its a really complex piece of software so patience is the key and expert in PHP would help. If you do a great job, regular jobs will be there from us. More details will be provided after hire.

  • $305 USD 9 days ago

    We provide a commercial VPN service and are looking for a developer to provide client setups" for our OpenVPN service on dd-wrt routers. We are looking for the simplest user setup but also other options which will all be shown by way of screenshots on our website. The developer will need to provide these screenshots of the dd-wrt interface. We also need a simple program that will generate a unique user command script from their username/password. This will be used on our website. This is our first time using Freelancer but we will be posting more projects for vpn client software.

  • $147 USD 9 days ago

    Modify SoulSeek client for windows need:When i start downloading files from user after browsing files (user must not see my download queue from him) budget 100-150$

  • $30 USD/hr 9 days ago

    Programmer for PHP web application and Mobile Web/Native Mobile AppThis is a Venture Capital funded start up that is actively looking to hire on the best programmers on oDesk.We have a web application (more information about the web app is below) that is nearing the end of development, and we will need to make a mobile version of this web app, in an app form for both android and for iOS.You will work directly with our lead developer, and take over a portion of the development responsibilities.Please read the information below very carefully before you apply.Thank you --o Knowledge and skill requirements:• We"re looking for someone who is passionate about creating strong 1) web applications and 2) mobile applications, with a focus on carrying through our plans for intuitive feature design, usability, and conscientious attention to detail.• Excellent knowledge of web-based content management systems• Working technical knowledge of: XHTML, PHP, CSS, MySQL, XML, Apache, & JavaScript/JQuery• Work is focused on modifying the social network framework called Anahita ( – modifying apps and creating new ones.• Prior experience with Nooku will be a big benefit. Or anybody who has developed extensions for Joomla! CMS, Magento or have developed using CakePHP, Symfony, or Zend framework.• Knowledge of Adobe Creative Suite applications• Ability to work in a fast-paced environment and pick up new technologies quickly• Understanding of cross-browser compatibilities• Self-motivated, analytical, and very detail-oriented- Excellent english skills.o 12 Month Contract:• Upon candidates successful admission to the Evolve Programming Team, the contract will begin with a probation period. The first project will be the way to prove yourself—its completion will end your probation period and entitle you to a permanent position with Evolve. The project will typically be 4-8 weeks in length and involve the completion of a self-contained programming task.• Programmer must work full-time, and may not work for other companies or on other projects.• Performance bonus: A programmer on contract will have exhaustive opportunity to achieve bonus pay and performance payouts, by delivering quality code and meeting time deadlines.o Promotions and Long-term Development:• Evolve is actively looking to build a large team of contributing programmers, and application development managers.• Opportunity exists for top programmers to graduate into executive management roles at Volition; taking on a leadership roles in guiding future platform and application development.ABOUT THE PROJECTEvolve ----------------------------------------------------------Volition"s priority project, called Evolve, is an application that helps people unlock their potential and lead a happier life through positive reinforcement, goal triangulation, wisdom crowd sourcing and game theory dynamics.More ...Life is a journey-- one that in your dreams takes you to beautiful places. Evolve connects you with other fellow travelers, people who are with you, and people who have gone before you. With Evolve, you"re not alone in the pursuit. The pursuit of happiness, success, celebrity, peace... whatever your ambition may be, Evolve gives you the pearls of wisdom and tools that you would only expect from a sage, old friend. You will need them as you set out on the higher path, the road less traveled; because one thing you can be sure-- to go where your dreams guide you, you are going to need to a little help from some friends.Evolve is currently in private beta testing and available by invitation only during this incubationary period of evolution.ABOUT THE OPPORTUNITYmore at

  • $800 USD 10 days ago

    The interface will get input from a library of C++ classes(platform independent) and display it.The C++ library has already been developed and is available. What is needed is a problem specific interface that calls some functionality from the library for problem solving.

  • $600 USD 14 days ago

    安卓vpn客戶端的咨訊希望可以支持PPTP ,L2TP, IPSEC PSK XAUTH , OPENVPN的全部協議,或者部分協議。客戶端通過網站php接口返回一些信息用來驗證,通過後讀取一個被加密的列表,在客戶端內解密並讀取這個列表(服務器列表),進行多線程延遲測試。然後如果可能的話需要支持路由表的設置,這樣可以使國內流量不走VPN。還需要自動設置網絡的DNS服務器為google提供的8888,8884。需要有一個用戶信息和服務器信息緩存機制(加密保存)當驗證php服務器不可用的時候使用文件信息登錄到vpn連接界面。具體細節和價格可以慢慢談談。

    Jeff Lee does not have any open projects.
    Jeff Lee does not have any work in progress.
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System administrator

Apr 2006 - Sep 2012 (6 years)


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



Shenzhen University



Redhat Linux 9.0 General Administrator



Performance enhancement for streaming service

Nanyang pub