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Xamarin & Mobile & Web Developer & 3D, 2D Perfect Design

Username: zhengnami13

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Location: Shenyang, China

Member since: April 2013



(98 reviews)

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8 users have recommended this freelancer.

My skills:

My projects:

  • €450.00 EUR
    Profile image for Seller Raizen21


    16 days ago

    great working with. Listening carefully to requirements . I would rehire again.

    Project Description:Hello, We have developed a complete and functional web service in WCF(.Net) and have a developed a working android app with it. We now want to have a similar version for iOS . In this first phase, the...
  • $2680.00 USD
    Profile image for Seller dsweany


    17 days ago

    Zheng is an excellent developer with incredible knowledge. I would definitely recommend him and would hire again without question.

    Project Description:Write an application that uses the built in iPhone accelerometer technology. Very similar to the iPing and PerfectPutt applications with some unique differences. Golfer would be required to purchase an iPing cradle that holds the iPhone and attaches to the putter...
  • $2880.00 CAD
    Profile image for Seller o0JoeCool0o


    Jun 12, 2014

    Fantastic work. Was able to get around complex issues, definitely will rehire.

    Project Description:I need an Android version of the PSPDFKit framework, with hand written annotations that look the same quality and smoothness as the pspsdfkit one. We have a project we made in ios in pspdfkit that needs...
  • $1052.00 AUD
    Profile image for Seller tomii955


    Jun 9, 2014

    The app has been completed.

    Project Description:Concrete calculator The Concrete Calculator can be used to estimate the volume of the concrete you will need for the size, or area, of the land that needs to be covered. The size of the area can be specified using rulers or using the drawing tool...
  • $504.00 USD
    Profile image for Seller aliemami


    Jun 7, 2014

    awesome experience<br/>few times i have worked with him, he is very pleasant to work with and excellent programmer <br/>he is one of the best programmers i ever have worked with. I would hire him again. <br/>great programmer, awesome to work with and a great communicator. I will continue work with him for rest of my project

    Project Description:to finish an iphone music application, the work is almost 90% complete the candidate should have following expertise: - be expert in creating application using xib files - be expert in pre ARC applications...
  • $1286.20 USD
    Profile image for Seller hkbilly828


    May 23, 2014

    Good, On Time, Nice. Very nice

    Project Description:Write an iPhone application for socket + stock quote I have a server have provide json data (web socket []) you need to create a iphone application (using tab controller and tableview to store...
  • $150.00 USD
    Profile image for Seller bmrlau


    May 16, 2014

    Zheng is a Smart Developer, and is always there for support in case of any problems, and perfect communication through the whole project.

    Project Description:Correct a bug fix in who viewed my profile.
  • $650.00 USD
    Profile image for Seller rzckh123


    May 5, 2014

    Awesome work<br/>

    Project Description:Additional functionality.
  • $945.00 USD
    Profile image for Seller magnusandersen


    Apr 30, 2014

    Yeah hes good :)

    Project Description:I need an app where users can store credit card number, expire date and cvc code. The program should need a security code to start, selected by the users upon first start of the app. Then add-edit-delete for every card...
  • $4937.00 USD
    Profile image for Seller rzckh123


    Apr 22, 2014

    Good developer, work hard finish tasks fast.<br/>Good work!<br/>Good!<br/>quick and fast, definitely will hire again.<br/>Good work, on budget and on time<br/>Good job<br/>great work, nice and fast<br/>Good, solve problem very quick!<br/>Good work, solve problem quick and clear, explain code nicely. Definitely will hire again in the future.

    Project Description:We need a skilled iOS developer cooperate with us as a consultant with follow skills:\r\n1. Familiar with coreLocation/GPS service, coreData(might or might not need, depend on how we handle localized data), data validation and other basic iOS SDK function.\r\n2...
    Zhengnami has not completed any projects.
  • $4842 USD In Progress

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

  • $31 USD/hr In Progress

    Hellowe are developing new mobile apps based on Wordpress.we need professional freelancers that familiar with BOTH WordPress and PhoneGap.if you have 3+ years you can bid !thank you.

  • $4842 AUD In Progress

    - Endorsement System- Fix Bug List

  • [Sealed] In Progress

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

  • $36 USD/hr In Progress

    Experienced programmer wanted for Xamarin project.Applications from programmers with proven experience ONLY.We need a prototype mobile application build in Xamarin for Android.The purpose is a general application for field service / delivery, including:- local database for offline functionality- Multi treated, background communication with webservice, when having Network connection, logging GPS-position every 10 secs (configurable)- Login - call to webservice- Load route from webservice (a route is a set of stops; adresses to visit and to perform a task; fx delivery or field service)- Display a list of stops for the loaded route- Select a stop on the list, show a page with details for the stop eg. name, address, phone number- Show stop on a map and enable navigation to the address- Signature capture for proof of delivery. Save the signature in the database.- Report the stop as done, register the actual date/time and GPS-position in the local database- In the background send the information to webservice whenever possibleThe prototype should be documented and we should be able to continue the work ourselves.

  • €1443 EUR In Progress

    Our company is looking for an Android App developers. The application already exists on iOS device, now it must be developed on android mobile and tablet. The app present on mobile phone is dedicated to customers, that on tablet is dedicated to the merchants.The mobile app allows the customers to purchase product directly from the app and receive coupon and special offers from the merchants.The two apps will communicate with a backend server through restful php web services already implemented.Those web services will let apps fetching data in the XML format.We have attached a wireframe in order to let you understand the app main functionalities.Once the project is taken in charge a specification document will be provided with all the details about communication web services.The project is very urgent and it should be developed in one week once the technical requirements will be provided with. We will deliver the requirement on Friday 10th January and the project must be completed on Friday 17th January.

  • $35 USD/hr In Progress

    I know you get this request all the time and I am in now way trying to low ball this project. I studied math and many of my peer in university studied computer science and I first hand know this is a huge project. But I also know the average going rates for software development so lets play fair ball pure business/service. I need to develop a website with a monthly registration fee as well as a very small transaction fee. As you may know Vaporizers and associated items are becoming a large consumer interest. I am the founder of Vaporize-IT Distribution Corp. I have created a web or net between local (socal) wholesalers and local (socal) retailers. BUt this is growing to large for me to manage on my own. My niche is that &quot;on hand inventory&quot; is deliverable within 6 hrs and my &quot;on call inventory&quot; is available in 24 hours. We mark up the item on average (emphasis) average 35%. My on hand inventory is once the order is received is delivered by a driver within 6 hrs and my on call is delivered by a drivr within 24hrs. BUT! I want to give a retailer the option of being a wholesaler as well for certain items. If they must order some they might as well order a lot and wholesale a portion to another retailer. THey can choose to send it themselves, or have a driver of mine pick it up and deliver the item for an added cost than can be divided by both parties evenly. THe seller should be able to choose his payment option be it Cash on Delivery or Cash on Order. It is imperative that this site is exclsively for retailers (who identity should be masked with only location of store available to view to prevent retailers fueling neighboring competing stores. This exclusivity can be maintained by invite only memebership. Im willing to put up funds to have this done well for I feel it has a huge growth potential.

  • $1546 USD In Progress

    Hi, i need a good developer to improve completly a componant community poll in my website joomla, if you do a good and speed job tell me. For all task tell me in skype [ USERNAME = nojmoi ].

  • $180 USD In Progress

    I have a client that uses Smugmug to display photos from his events. He&quot;s looking to have his Smugmug account perfectly match his header/nav and footer with his website. Smugmug:

  • $824 USD In Progress

    Looking for professional to do the Mobile Optimizayion of our B2B platform http://www.italianbrandsdistribution.comWe are also looking for someone to do the Mobile App for our offer system for members to register, login and send to their friends, sharing, etc.Our offer system page:

  • $30 USD/hr Today

    I need an OSX app developer with experience building custom UI elements. I have some fairly simple (and *very* beautiful) custom UI elements which need to be built and laid out for a Mac OSX application. You will commit your work daily to GitHub.Note: You must either have Mac apps in the App Store that I can review or be able to share code for one that you have built in order to get this gig.

  • $31 USD/hr Today

    0Freelancersviewing right now501TOTALviewsProject Description: We need 1 to 2 really good developers that can help us make some updates to our product. I cant go in to a lot of detail here but i can say some of the specific technologies you will need to be proficient in. Next to each technology we have put a number which will represent your skill level on a scale 1-5 on these technologies. ubuntu (3)gdal2tiles (3)nodejs (5) actionhero express kue expressjsmongodb (4)elasticsearch (4)rivers (3)JavaScript(5)Bootstrap(5)CSS3(4)To apply for this please link us to your work so we can see what you know. This can be samples, github account, stackoverflow account etc.. something for us to get a feel for your work and interests.We are looking to make this hire pretty quickly and expect the work to be 2-3 weeks.

  • $4842 USD Today

    I need someone to develop an Android app and a website for my project. The website is an e-commerce site which sells electronic documents. I do not expect you to develop it from scratch, but to customize one based on a popular open source shopping program such as Zen Cart. The app should support most Android versions and different screen sizes. The lowest version I expect you to support is 2.3. Details of the development will be sent to you through PM.

  • $1473 AUD Today

    Create an Android application from an existing iOS application. Could be done as a standalone or involve recreating the iOS and Android project in a cross-platform development system such as Corona.

  • $1578 USD Today

    I want an app for maids on demand.. Similar to &quot;Twilit&quot;

  • $25263 HKD Today

    I need a native application for any operating system / device coded, no design required.

  • €18 EUR/hr Today

    We need to migrate our HTML5 webapp to Android using XDK IntelWe DO NOT give source code, so we need to do the work with teamviewer

  • $15 USD/hr Today

    I need developer to fix a few issues on my Wordpress site. Need this completed ASAP within 1 hour.Pay is $15 total.

  • $2947 USD Today

    We have a exciting opportunity for a full time iOS developer to join our team. please submit your application if you tick the boxes below;- Previous experience in developing premium groundbreaking apps, familiar in developing apps for iOS 7+- Previous experience in developing apps with social functionalities such as chat, social sharing, picture galleries, and API integration with other platforms- Ability to interpret blueprints and wireframes, effectively implement solutions based on requirements- Exceptional communication skills in english- Previous experience in e-commerce industry would be of advantage, especially buy and sell platform- Ability to understand Chinese characters would also be of advantage.This is a long term project role, and we are looking for someone who we can work and collaborate together in making a game changer product

  • £7368 GBP Today

    I&quot;d like quotes for BOTH an Apple and Android App to be developed similar to the Austrian App &quot;Shpock&quot;. Shpock and get to grips with it. Similar to Gumtree in the UK, and a non-auction version of Ebay, Shpock allows the easy listing of household items to be sold to other App users.The App uses location as the primary filter for listings, showing items for sale nearest to you first.App must have the following features:- Social log-ins and integration (e.g. easy sharing of items for sale, key user achievements like first sale)- Camera integration to allow the quick upload of photos of items for sale- Search functionality to apply filtering of items listed for sale- Location based filtering of items for sale- Messaging platform to allow for questions to be posed- Offer system to allow for private offersI look forward to hearing from you.

  • $7894 USD Today

    I need a an original algorithm that will perform a calculation and reveal the results via mobile app.The app will be a Health and Fitness iPhone and Android app the user will enter information > algorithm figures out final calories needed based on the user entered information and “Tdee calculator” > grabs cooking recipe from database > show resultApp name: Cayenne The Fitness AppCategory: Health and FitnessThe Algorithm: The ALGOR takes the amount of loss/gain calories calculated by a standard “Tdee calculator” - the amount of calories burned during sex + the amount of time you spend sleeping - the amount of calories accumulated by how much alcohol consumed per week = ____The App:• User can register with Facebook, Twitter, Instagram (switches to apps not just straight to browser)• User can change to Mufti-language• User can check-in their location via Facebook, Posse, Yelp and Foursquare• User can enter their wake time and sleep time.• User can see video/instructions on how to do a exercise routine.• Ability to see how many reps and sets were done on a certain exercise previously.. to compare progress (the client has to have an option to record their exercise stats ) They should also be able to see their progress from last time underneath the current exercise• User can track calories for random foods.• User can take a photo and video of foods.• User can choose an exercise by selecting a body graphic and touching a targeted area arms-back-abs-chest etc.• User can Social share everything, photos, exercise results.• User can enter and records every detail of your workout, including duration, distance, pace, speed, elevation, calories burned, and route traveled on an interactive map. The app compiles and crunches this data to create a comprehensive workout history.• User can use a Stop watch timer to time themselves in workout sets• User can record reps and sets in history (the user has to have an option to record their exercise stats)• User can choose an exercise by equipment they require kettle- bells, dumbbells, body weight, etc.• User can choose an exercise by routines for various goals, ie,.. fat-loss, strength, ab definition etc.• User is able to see their stats from last recorded workout right underneath the current exercise stats.• User can see photo images/instructions on how to do a exercise routine.• The app supply a “meal plan and recipe” together from server based on “Algorithm”• User will be assign meal plans and recipes based on AlgorithmThe Server: - must be able to add more features in the future- must be built on open source technology NOT MS• Admin needs to add and take out meal plans and recipes• Admin needs to add and take out videos and video instructions • Admin needs to add and delete users • Admin needs to see all user information• Admin needs to send push notifications to all users or single user• Admin needs to track users via GPS• Admin needs to export all users info, social and all info entered via app• Admin needs to track apps who, what, where analytics

  • $5263 USD Today

    It is for analysing the trajectory of how a dice falls for the purpose of improving throwing craps, i.e. exactly how you want it to land.- The phone will be placed half a meter from the dice thrower, with the camera shot facing the direction of the thrown dice.- Two dice will be thrown at the same time.- The dice will be 19mm red dice, with razor edges, like the ones used in regulation craps.- The dice are thrown at a target marked by a white (?) spot on a green felt surface 2 to 4 meters away from the thrower.- The camera will be recording the two dice dropping from above, onto the target spot.The application needs to calculate and return on the phone screen the results of the throw, within 1 second (the faster the better), the following specifications of the throw, accurate to 2.5%.(1) Speed of the dice upon impact on the felt table.(2) Angle of the motion of the dice upon impact of the felt table (should be average and around 45 degrees, ranging from 10 to 80)(3) The average drop location of the two dice compared with the target spot.(4) The difference in distance of the impact spots of the two dice.(5) The difference in time of the impact time of the two dice.(6) The face of the dice facing downwards upon impact.(7) How many corners of the dice touch the table before bouncing upwards, and it which order do the touch, and the timing difference for the contact.(8) The X, Y and Z axis spin speed in terms of revolutions per second (with positive and negative spins for each axis).(9) Trajectory analysis to work out the V angle from which the dice split away from each other as it moves away from the thrower.(10) Trajectory analysis to extrapolate the starting position of the dice (the starting position should be the two dice being held together touching each other in one hand), in particular, how high off the height of the felt table, was the dice released.Either Android or iPhone is usable, assume we are using specifications of iphone 5s and samsung s4. If more than one phone is required to do all of the above within the specifications, more apps can be written separately for two phones to cover the above 10 functions, but no more than three phones.Mechanical engineering is required to factor in the effects of backward spin and forward spin on the trajectory of the dice.Requirements summary:(1) Accuracy of all 10 results must be within 5% of error, i.e. when compared with high definition slow motion recording of manual calculations, the 10 results in absolute figures must be between 95% and 105% of the results achieve manually. 100 tests will take place for comparison(2) Delay of producing the results on screen. From when the dice impact the felt table until the 10 calculated results appear on screen, the delay must not be more than 1 second. The faster the better. Again a slow motion recording of both the dice drop and the phone results will be used to compare the delay.(3) Number of phones used are not to be in excess of three phones.(4) Price to be quoted by freelancer(5) Development duration to be quoted by freelancer.

  • [Sealed] /hr Today

    We&quot;re looking for a developer to work on our Android app, written in Java, build for Android exklusive. UI skills and datatraffic skills are important too. Optional programming of webservice for the app, written in Java, hosted on AWS.Billed by working hour.Please paste references.

  • £1052 GBP Today

    The project is based on an idea and require a Android coder to code the app for me.I apologize i cannot say much about the idea but if anyone wants to be a part of it then please contact me.

  • £1578 GBP Today

    Create a mobile app ( iPhone and android)

  • $2105 USD Yesterday

    Seeking an android app that has the following properties:Device / Platform Supporta.Android (v4.x) platforms must be supported.b.The app must scale to different screen sizes from 4” phone to 10” tablet on both platforms.c.The app must be available for free on Google Play Store.Rebrandinga.It must be possible to create re-branded versions of the app with the following changes:i.App name, icon and home screen bannerii.Inclusion of a token or key that enables the app to display products from one vendor (for whom the rebranded version of the app is created). b.The app should simply pull its data from a specified website where the vendor data exists. Website Interactiona.On launch, the app should connect to the website and download all content necessary to display the screens. This information should be cached on the device so that subsequent launches display the content quickly.b.When a user initiates checkout with items in their cart, the app will open the website in the device’s default browser and the contents of their cart will be preserved, ready for the payment process already implemented in the website to proceed.c.Sign in and sign up must be possible from the app and integrated with the website.Screensa.A home screen is displayed when the app is launched and consists of three sections stacked vertically: i.Banner graphic and welcome text.ii.Shop by options.iii.Featured productsb.A cart screen is accessible from a menu and displays the list of products the user has added (if any) and their total cost. It also has a checkout buttonc.A shop screen that display a scrolled list of vertically stacked products. When a product is pressed, its details are display on a product screen.i.The list can be filtered by categories.ii.The list can be search with a free-text search.iii.The list is sorted by price, defaulting to lowest price first.d.A product screen that displays detailed information about a single product:i.Photo, name, description, price.ii.Add to cart button.iii.List of comments made by other users.iv.Ability to add new comments.e.A signup / login screen is displayed when the user attempts to either add a comment or like a product, unless the user has already logged in previously, in which case no signup / login screen is displayed. The signup / login screen must have the following options:f.Sign up for new users can be done either manually (by supplying full name, user name, email address and password).g.Password reset.h.Sign-in can be done using email and password specified above.A profile / user settings screen is accessible from a menu and allows setting the photo, and changing the user’s display name.

  • $26 USD/hr Yesterday

    hello we need you to create us software custom we will give you all details please pm now Thanks

  • $789 USD Yesterday

    I need an iPhone app. * The radio station list (and also graphic) will be loaded from a database server. *When user clicks each radio station button, it will call a URL link that stream the radio. *The application also need to have the feature to take picture in the app and email to a specific address in the background.*The application should also load and display advertisements that are saved on a database serverWe will provide all graphic works

  • $5263 CAD Yesterday

    linking families together through an app

  • $3000 USD Yesterday

    Business staffing model, note taking, picture ability, PDF uploading and output, customizable templates, customizable filing system

    Zhengnami does not have any open projects.
    Zhengnami does not have any work in progress.
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Mobile Software Development

Jan 2010 - Dec 2011 (1 year)

Shanghai Guangming Software Development Co., Ltd.

I developed many mobile business apps.


Software engineer

Shanghai University of Engineering Science


Software engineer

Shanghai University of Engineering Science



Electronic Engineer

Shanghai TV University


Network technology