Top Upwork Freelancers

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  1. Andrey Ogurtsov

    Andrey Ogurtsov

    Biostatistician / R programmer

    Ukraine - Tests: 1

    Biostatistician with 3 years of experience. Favourite programming tools - R and SPSS. Performed works: • definitions of primary and secondary variables; • sample size calculations; • writing statistical analysis plans for phase I-IV and bioequivalence trials; • performing statistical analysis and writing statistical reports; • creating CRF; • data input and verification; • developing correspondent SOPs. STATISTICAL AND MACHINE LEARNING SKILLS: • classical methods of analysis; • general and generalized linear models; • non-linear modeling (splines, GAMs); • tree-based methods (bagging, random forests, boosting); • dimension reduction (PCA); • clustering (hierarchical, K-means); • cross-validation; • bootstrap; • multiple comparisons adjustments. PROGRAMMING SKILLS: • using R functions for wide range of statistical methods; • writing new R functions to implement desired functionality; • data wrangling with basic R functions and packages like reshape2; • data visualization (basic graphs and ggplot2); • automated report generation and reproducible research (knitr with R Markdown or LaTeX); • interactive presentations with shiny, rpanel and googleVis; • SPSS (both GUI and syntax); • SQL (basic knowledge).

    $10.00 /hr
    0 hours
    5.00
  2. Szabolcs S.

    Szabolcs S.

    VoIP specialist and Linux guru

    Romania - Tests: 1 - Portfolio: 2

    Over the last 10 years I have managed a wide range of IT projects and provider grade infrastructures, including VoIP platforms, VPNs, Linux servers, firewalls. My main profile is Linux servers and building VoIP platforms with opensource components as Opensips, Asterisk, MySQL, Radius, CDRTool, Mediaproxy, RTPProxy. I also have experience in KVM virtualization, Cacti and Nagios monitoring.

    $15.00 /hr
    0 hours
    5.00
  3. Rajeev Pulleti

    Rajeev Pulleti

    iOS Devloper

    India - Tests: 6 - Portfolio: 3

    I am a passionated iOS developer with experience of 2 years.I have Developed extensive experience and expertise in building world class iPhone, iPad.iPhone and iPad applications for a range of domains like retail, construction, healthcare, transportation, eCommerce, gaming, business productivity, publishing. Expert in: Restful web services integration, Apple push notifications, Map kit. location and GPS, exchanging photos and videos to server, Quartz core and Core animations, Sqlite and coredata.

    $11.11 /hr
    0 hours
    5.00
  4. Arnel C.

    Arnel C.

    Phonegap, iOS, Android, HTML5, Angularjs, Nodejs and php

    Philippines - Tests: 3 - Portfolio: 6

    I am a professional programmer with more than 9 years experience of handling POS, desktop, mobile and web applications. My technical skills and experiences include the following: Mobile Development: Phonegap/Cordova Web Development: PHP (Structured, OOP, From Scratch), AJAX (Jquery, Moo Tools, prototype, Scriptaculous), CSS, XML Database Administration: MySQL, MSSQL, Mongo Open source: Joomla, Wordpress, Smarty, Zend, Magento, MVC (Model View Controller), SQL, Apache/Nginx Web Server, Sendmail, Git, CentOS, RedHat, Ubuntu, ezPDF, Backbone.js, Node.js, less CSS I joined Odesk to share my expertise and help buyers/employers with their business. Please see my portfolio for some of my completed work. I have Skype and a reliable Internet connection; therefore communicating with the client is never going to be a problem.

    $15.00 /hr
    1 hours
    5.00
  5. Md. Asaduzzaman Noor

    Md. Asaduzzaman Noor

    Android Application Developer - Expert on Functional Programming

    Bangladesh - Tests: 4 - Portfolio: 5

    Having a Bachelors Degree in Computer Engineering, my knowledge in IT ranges from experience with Java and Software Engineering, to Android application development and many other skills mentioned in the list bellow. The links of my best working published on Google Play Store https://play.google.com/store/apps/details?id=jumoke.lagos.shortestroute Programming Languages: - Java - C/C++ My Services: - GCM - Push Notification (Parse.com or other) - Google MAP API v2 - Camera Functionality - Reverse Engineering (APK Extraction using Algorithms) - PlaceAutoCompleteView

    $6.67 /hr
    0 hours
    5.00
  6. Emir S.

    Emir S.

    Software Developer

    Bosnia and Herzegovina - Tests: 5 - Portfolio: 1

    Software Developer with massive Work experience, currently employed for a major Bank as Senior Software developer. Strengths: - PHP - Java - Java Script - .net - MySQL / MSSQL - HTML 5 Personal Perks: Verry Versatile and fast Comunicating. Which means I answer all inquires during the day. Limited availability of 15 Hours a week but during this time I give my full dedication towards given asignements.

    $27.78 /hr
    6 hours
    5.00
  7. J.m. G.

    J.m. G.

    Specializing in Sports Data Applications

    United States - Tests: 1

    Hello, Working with sports related data is a niche area that I have become expert in over the years. I have worked on countless sports related projects involving such things as research generation, database builds, fantasy roster creation, and outcome projection methodology for handicapping. Additionally, I own and maintain databases containing a wealth of information for the NFL, College Football, NBA, College Basketball, MLB, and the NHL. If you have a project in this area, not only can I deliver it, but if needed I can help brainstorm it and might already have on hand the complied data to feed it. I also have extensive experience with the following: • Anything and Everything Excel related - From the super simple to the super complicated • Anything and Everything MS Access related - From the super simple to the super complicated • Web scraping applications • Creation of scripts and utilities • Creating, maintaining, cleaning up databases I have had a long and successful career history in the traditional workforce and have decided to explore some freelance opportunities online. You will find me to be through and responsive. If you are a client of mine, you and your project will be important to me and I will do whatever I can to make you feel that way. In a high tech world, I believe in old fashion customer service. Thank you for your time, and your consideration.

    $50.00 /hr
    0 hours
    5.00
  8. Alexander Kuznetsov

    Alexander Kuznetsov

    Alexander Kuznetsov

    Russia - Tests: 4

    My name is Alexander Kuznetsov! I'm from Russia. Over the last 3 years, I have developed software for PC (Windows), RTOS, Cross Platform, National Instruments hardware platform and PLC. My specialization is: C/C++ (Visual Studio, Qt (+QML), CodeBlock, LabWindows) C#, VB, VB .NET, VBA, VB Sctripts SQL/MySQL/SQLite OpenCV (I'm graduate student of computer vision systems department) Scripts for Microsoft Office. LabView (incudin NI hardware platform PXI, PXIE and Compact Rio). I have National Instruments certificates (2+ Years experience). Programming OMRON PLC, OMRON Graphic Tuch Panels and OMRON SCADA. I have Omron certificates. Programming scripts for Zuken E3 Software.

    $7.78 /hr
    0 hours
    5.00
  9. Yauvaraj Rimal

    Yauvaraj Rimal

    Expert in SQL Server,Android,MVC3,4,5, C#.Net,Vb6,ASP,Php, Powershell

    Nepal - Tests: 3 - Portfolio: 3

    I am a database consultant and Software Architect with 6+ Years of Experience in Software development and database administration. I have mostly developed softwares in C#.Net and Asp.Net. I am very good on SQL database administration and performance tuning. I have done many administration and tuning tasks over last couple of years. @SCALED AGILE Practitioner @ Languages : C#, JAVA, PHP, VB, C, C++ @ Database: MS SQL SERVER 2000-2014, Oracle 10g and 11g, MySQL, MS-Access, Vertica @ OS : Linux, Windows @ Phone Application : Windows Phone, Android More : http://np.linkedin.com/in/yrimal http://www.yuvraj.com.np

    $17.00 /hr
    0 hours
    5.00
  10. Aleksandr Shushpanov

    Aleksandr Shushpanov

    Software Engineer

    Russia - Tests: 2 - Portfolio: 1

    I have great experience in developing and maintaining multiplatform applications running both on Linux/Windows. I prefer to use C++ because it is a perfect language for a lot of tasks, it provides maximum flexibility and performance. However, I have necessary knowledge in scripting languages to use them efficiently and I am able to study any technology required for a particular task to be completed.

    $25.00 /hr
    0 hours
    5.00