Top Upwork Freelancers

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  1. Roman Chernyak

    Roman Chernyak

    Android/iOS Developer

    Russia - Last active: 7 days ago - Tests: 4 - Portfolio: 2

    I specialize in Android and iOS app development. In addition my past projects also included working with complex UI with custom views and animations, web services and REST API's, Push notifications/Google Cloud Messaging, SQLite databases/Content providers, background services, synchronisation (Sync Adapters), and integration with social networks (Facebook, Twitter), billing and in-app purchases. I have experience in using GIT, different crash reporting and analysis tools like Crashlytics, Flurry, Crittercism. I have also successfully developed several mobile applications, among them Chess.com mobile app (as a team member) and Easy Call launcher app. My strong suit is experience in designing architecture of applications, choosing best suited technologies. I pay special attention to the code readability and expansibility. I like to produce good, bug-free code and software.

    $33.33 /hr
    1,861 hours
    5.00
  2. Antonio J.

    Antonio J.

    Senior .NET Developer and Project Manager

    Portugal - Last active: 4 days ago - Tests: 1 - Portfolio: 13

    I'm a seasoned Senior .NET Developer and Project Manager. I've been Developing Web Based Applications and Websites for the last 15 years, in both small and large companies. I'm proficient not only in several Development tools, but also in Database Design, Administration and Functional & Technical Analysis. In order to complement my technical skills I've also acquired Project Management skills, that help me plan, organize and control small and Large Development Projects. My Technical skills can deliver a job well done, I work on a daily basis in .NET, Jquery, BootStrap, Jquery, VB.NET, C#, Colfusion, SQL 2005/2008, Javascript, HTML, XML, XSL, XSLT, VB6, ASP and VB.NET. However I've also worked with PHP, MySql, Metatrader, VBScript, Access and several other technologies. The broad range of skills and technologies I've gathered in the past years, is the key to provide a very good work.

    $28.89 /hr
    1,838 hours
    5.00
  3. Evgeny S.

    Evgeny S.

    Senior Software Engineer

    Russia - Last active: 16 hours ago - Tests: 4 - Portfolio: 6

    I am an independent software engineer with a very broad range of development skills and technologies. I most enjoy working in small innovative teams and with individual decision makers to help grow their ideas into mature and robust software systems based on modern technological foundations. I'm also not a stranger to big software companies, and I can be a reliable team member as well as a small group project architect/leader when needed. I have experience with the following technologies: - C++, Python, JavaScript, C#, Java - Nginx, Gunicorn, Gevent, Flask, Django, jQuery, Node.js, Apache. - MS SQL, DynamoDb, Amazon SDB, MySQL, Redis, NoSQL. - Linux, Amazon EC2, SQS, SNS, S3, RabbitMQ. - Win32 API, HTML5, Android, NDK, GTK, WinForms I'm also eager to extend my experience in cutting edge technologies and programming languages like Golang, Erlang, Nim, Rust, Haskell... I am looking for the opportunity to design and build a system from the ground up for you!

    $50.00 /hr
    2,357 hours
    5.00
  4. Aseem K.

    Aseem K.

    Native iOS 7 , iOS 8 ,Parse,Android Developer

    India - Last active: 1 day ago - Tests: 2 - Portfolio: 7

    "iOS 7 ,iOS 8, SWIFT and ANDROID Lollipop EXPERT" I am an enthusiastic and experienced mobile Application Developer. I have 5+ years of experience in iPhone/iPad,android Application Development and game development My core competency lies in Client Server Apps and 2D Game Development have worked extensively on the following technologies:- 1.Application - iPhone/iPad Application Development - Android Application Development - Server - Client Socket Programming - Unit Testing for iOS Development using various frameworks 2. Games -Unity 2d , Unity 3d ,Cocos2D, OpenGL, Corona,Box2D

    $35.00 /hr
    1,984 hours
    4.99
  5. Umer S.

    Umer S.

    iOS/Cocos2d/Cocos2d-x/Unity3d Developer

    Pakistan - Last active: 13 days ago - Tests: 3 - Portfolio: 4

    Over the last 3 years, I have been working as a Lead Mobile Developer. My expertise lies in iOS, Android and Unity3d development. I have wide range of experience in native applications, Cocos2d and Unity3d Games. I also have great skills in Cocos2d-x and Unity3d for cross platform release. Any sort of Ads integration or In-App Purchases (Charboost, PlayHaven, iAD, Vungle, AdMob, AirPush, MoPub, AppLovin etc.) for both iOS and Android is a piece of cake for me. I can assist in any kind of Mobile Development problem, from start of its development to the final upload. My core competency lies in the complete satisfaction of my clients. Here at oDesk, i am seeking opportunities to work with professional clients and to have long term business relationship.

    $38.89 /hr
    1,008 hours
    5.00
  6. Shibly K.

    Shibly K.

    PHP / C# / MySql / MSSql / Yii / Yii2 / CodeIgniter

    Bangladesh - Last active: 16 hours ago - Tests: 6 - Portfolio: 10

    Web Development || Custom Web Application || Mobile Web Application || Software Development || Database Administration || CSS Validation || HTML Validation I will provide best service within deadline. I believe in long term relationship. If my work satisfied you definitely you will give me more projects in future. I want to increase knowledge, get customer satisfaction and take the challenge. Web Development * PHP5 * ASP.NET * HTML5 * CSS3 * JavaScript * jQuery Responsive Web Development jQuery Mobile Web Development PHP Framework: * Yii * CodeIgniter Desktop Environment * C# * VB6 Database * MySql * MSSql * SQLite

    $15.00 /hr
    1,123 hours
    4.99
  7. Robert C.

    Robert C.

    TIBCO Consultant & E-Commerce Architect

    United States - Last active: 1 month ago - Tests: 2 - Portfolio: 2

    Good Day and thank you for taking a moment to read my profile! I started working in IT about four years ago as a technical support representative for Simple Helix, a Magento specialist web hosting company. From there, I had the opportunity to spend a year as a Network Analyst for a local, carrier class, ISP before moving on to a position as a Linux Systems Engineer with a Magento development firm. In the present, I work as an Applications Engineer with a focus on the TIBCO stack, most notably AMX, BusinessWorks, EMS, and SilverFabric. I have a very strong background in Linux/Unix administration and have worked extensively with CentOS, Red Hat, and Debian. I've worked with networks from a physical perspective, as a NOC Technican, as well as logical perspective troubleshooting complex application issues. Over the past few months I've taken the opportunity to learn to code in Java and I've recently attended Red Hat training for JBoss EAP 6. I'm a CPTE (Certified Penetration Testing Engineer) and would happily pursue projects as an E-Commerce Architect, Systems Engineer, TIBCO Engineer, JBoss Administrator, entry-level Programmer, or entry-level Ethical Hacker. I am available for new jobs immediately outside of US business hours.

    $33.33 /hr
    474 hours
    4.86
  8. Morten Brendefur

    Morten Brendefur

    Translator & Software developer

    Norway - Last active: 16 hours ago - Tests: 11 - Portfolio: 2

    I became fascinated with computers from an early age. Because of this, I also learned a lot of English because all the instruction manuals were in English! At age 13 I started breaking down the software other people had made, and from then and on I experimented a lot and basically taught myself the mind of computers. In regards to languages, I understand quite a few of the European languages pretty well these days and have combined my flair for computers and making software with my interest in languages. I am for the most autodidact and independent. I can, for the most, handle complex projects alone, but I also follow instructions and can work together with other people. I am autodidact in Basic, Turbo Pascal, Delphi. I am familiar with SQL, PHP, HTML, etc.. As for my computer skills, I have myself developed some of the world's fastest routines for managing vast amounts of data... I don't think I should go into the subject of all the software I have used and can use on a professional level (you would be stuck here reading for a very long time). I am in addition basically bilingual. Native in English or Norwegian? I say Yes to both. :) Maybe this can be put to work for you. I really enjoy working with different languages.. Translating and transcribing is not only fun, I still come across a few words that I don't know, and that is the fun part of researching and learning.. I can translate these languages in a professional manner: English, Danish and Swedish ---> Norwegian Norwegian, Danish and Swedish ---> English Norwegian, English and Swedish ---> Danish For short texts, I also offer translation like: Norwegian, Danish and English ---> Swedish. German ---> Norwegian, Danish, English and Swedish. I can offer transcriptions of Norwegian, English and Swedish audio files. Phew. That was a lot about language... Where did it all start you might wonder... Well.. It helps being told that you can not do it. (Don't listen to that you parents out there. Acknowledge the values of your children. Encourage them!) Apart from that, it does help to be stubborn! and travel around a bit is not bad either. Being a software developer is what I really want for my future. Challenges will come my way and I will do whatever I can to meet those challenges in a professional manner. Many old programmers or those taught a language at school see problems and a box they are stuck in. In school, I was the one teaching my teachers. I was the one thinking outside the box to get things done. I can be stubborn sometimes, but in my mind, nothing is impossible. The impossible only takes a little bit longer time. I wish to put my skills into good use and I hope that will be something for you.

    $44.44 /hr
    363 hours
    4.95
  9. Pavel K.

    Pavel K.

    Google Apps Script Expert Developer, JIRA Expert, SharePoint Expert

    Russia - Last active: 1 day ago - Tests: 10 - Portfolio: 2

    I have excellent skills in Google Apps Script developing. Also I have very good skills in SQL, Java and C++ programming. My experience in programming for more than 15 years allows me to bring exceptional value to my clients. My areas of expertise: - Google integration and Google APIs - Google Apps Script - Google Spreadsheet automation - Google Analytics - Google+ - Atlassian JIRA tuning and administration - In-depth JIRA programming with help of Groovy scripts/Java add-ons. - MS SharePoint tuning and administration. - SQL tuning. - Twilio API Also I hold MCITP: SharePoint Administrator 2010 certification. My key principles for job execution: 1) Honesty: I will not take a task if I am not sure I can complete it. 2) Availability: I can be accessed by Skype and phone. 3) Client satisfaction: My goal is to make you happy with my work. 4) Quality: I will create a fast and well organized code, which can be easily supported in the future.

    Groups: Coding Champs

    $30.00 /hr
    332 hours
    4.99
  10. Jason M.

    Jason M.

    Software Developer

    Canada - Last active: 1 month ago - Tests: 2 - Portfolio: 4

    Good Technical Fellow who can handle the most difficult jobs across diverse product family and technology library. My previous jobs include software performance optimization, software engineering process design and management. Above 8 years in direct hands-on coding. My skills include great software development practices and tools, including Virtual environments, Source control, Remote development, Issue tracking , Build , Packaging and test automation. Develop both desktop and Web applications using advanced technologies , which include : Java/J2EE, XML , XMLSchema, J2ME , Cocoa , Objective-C , UI Components with Swing /AWT, Web Frameworks such Hibernate,JSF,Struts... Mobile Developer : iOS Recent Application: Property Appraisal Applications for iPhone and iPad

    $30.00 /hr
    88 hours
    4.97