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Last updated: October 1, 2015
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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



Data Scientist

France - Tests: 4

Hi, my name is Denys Lazarenko. I am a full-time Data Scientist at Capgemini France. My number one goal is to be useful for you. When working on a new project, I'm always enthusiastic, I talk to clients in order to have a clear understanding of their needs and vision of the project. I believe that my strong points are my Punctuality and Enthusiasm. I do my best to respect deadlines. I'm honest and fair. I look forward to working with you soon. Data Scientist since June 2015, I have contributed to several projects for various clients. + Tasks: Natural Language Processing, Machine Learning, Map-Reduce, Data Cleaning, Data Analysis, Data Visualization, + Domains: transport, HR, retail, energy. + Technologies: Python, Spark, Hadoop, JavaScript, Shell. In 2013-2015 I worked as a software developer at the Transport department at Sopra Steria in Paris. We developed software for Paris transport network (metro, buses, tramways). + Technologies: Java EE, Python, JavaScript, Google Maps API. Education: + 2014: MSc (apprenticeship) in Software Engineering [Paris, France] + 2012: MSc in Particle Physics [Paris, France] + 2011: MSc in Theoretical Physics [Kharkiv, Ukraine] My solid scientific background helps me understanding new projects and gaining new knowledge faster. Here is the list of my skills: + Sciences: Mathematics, Statistics, Physics + Machine Learning, Data Mining (regression, classification, clustering, dimensionality reduction, Natural Language Processing) + Algorithms + Big Data (Spark, Hadoop) + Python, scikit-learn, numpy + Java SE, Java EE + JavaScript, HTML/CSS + Shell (Bash) + Linux (Debian, RedHat), Windows + Git, SVN + SQL, MongoDB, Cassandra + UML I am a great fan of languages: + Russian and Ukrainian (native languages) + English, French (fluent) + Italian (intermediate) + German (beginner) ======================================================= ================ BONUS ================================ ======================================================= And finally, I can solve 6 Rubik's cubes BLINDFOLDED or 1 Rubik's cube 4x4 blindfolded in 5 minutes (that's a National record of Ukraine): Thanks a lot for your time!

$33.33 /hr
0 hours

Salman Ghani

Salman Ghani Agency Contractor

Experienced Web Developer / Professional

Pakistan - Tests: 4 - Portfolio: 32

Over the last 8+ years, I have been involved in development of websites, desktop applications and mobile apps. These are my core areas of expertise: (C# and vb), MS SQL Server(2005,2008,2008 R2,2014), Visual Studio (2005,2008, 2010,2012,2013), Java. I have been using MS SQL Server to handle the database end in web and desktop applications. Also, I have good experience of PHP/MySQL based web development. I am fully capable to perform a development job from scratch till the end i.e. compilation and/or analysis of requirements until launch of the application in production environment. My portfolio includes many such projects where I was the only person to take care of all the aspects of a project, whether it be analysis, design, development, testing, hosting or technical consultancy. I really enjoy working with mobile applications. Starting from analyzing the requirements until getting the app approved by apple to put it on the app store, I can handle all the tasks myself. I can perform very well while working with facebook API, twitter API, Google Maps, ClickBank API, In app purchase, GPS based apps and many more. I am in a habit of writing very clean and well managed code, which other developers can comprehend very easily. This characteristic of code makes the maintenance procedures convenient in the long run. I am very keen to develop long term business relationships with my clients. This is the reason that i try my best to deliver a very high quality performance. My dedication with my work helps me achieve my targets.

Groups: Corona Labs

Associated with: Mobile Expert

$20.00 /hr
742 hours

Alejandro Naser Pastoriza

Alejandro Naser Pastoriza Agency Contractor

Software Developer

Argentina - Tests: 4

- Computer Scientist: Bachelor's degree (GPA %99.4), finishing Master's (GPA: 99%) thesis on Data Managment, "Adaptive Cache Managment for Arbitrary SQL Workloads". - Full-stack Ruby/Python Developer. - Diving into Data Science. - Experience in research & development, both in the software industry and in the academic world (Summer @ EPFL Data Intensive Systems and Applications Laboratory). I enjoy bringing the best of both worlds to combine cutting-edge theory and technology to come up with a solution for real-world problems. - Interested in Data Managment, Information Retrieval, Data Analysis & Visualization, Machine Learning, Natural Language Processing, Web Scraping, Web Development and Research papers implementation. - Familiar with: * Python, Django, Flask, Scrapy, numpy, scipy, pandas, scikit-learn, NLTK, matplotlib, ipython-notebook, bokeh, gensim. * Ruby, SciRuby, Rails, Rspec, Cucumber, Devise, MiniTest, Test Unit, HAML, ERB, Slim, Capybara, I18n, Sidekiq, Nokogiri, Will Paginate, Paperclip, Shoulda, FactoryGirl, OmniAuth, Bundler, Capistrano. * HTML/CSS, Javascript, CoffeeScript, jQuery. * MySQL, postgreSQL, redis, mongodb.

Associated with: Cordatazo

95% Job Success
$22.22 /hr
460 hours

Sudipta Kar

Sudipta Kar

Corona SDK| Cocos2D| Unity 3D| Java| iOS|Android Expert Game Developer

Bangladesh - Tests: 2 - Portfolio: 16

Portfolio : I have developed many desktop applications using JAVA. Since last 2 years working on Android applications and developing cross platform games for Android, IPhone and IPad using LUA. Made some websites earlier using php, javascript and a little of jquery. Interested in problem solving and game developing. Also have some experience of working with jsp and servlets. My Software and Technological skills include : - Languages: C, C++, Java, Lua, Objective C, Swift, Html, PHP, JavaScript, SQL, Matlab, Oracle, SQLite. - Frameworks: iOS SDK, Android SDK, Box 2D, Cocos2D Corona SDK, OpenGL. - Softwares: 3DS Max, Photoshop, Illustrator, Xcode. - General skills: Physics, Mathematics, 2D & 3D Graphics concept, Game Design, Software Engineering, Database Design, API Design, Software Architecture . Attention : I don't work with any guy from India/Pakistan as I have bad experiences working with them

Groups: Corona Labs

62% Job Success
$22.22 /hr
252 hours

Mikhail M.

Mikhail M.

C#/C++/C/Visual Basic .NET senior software engineer

United States - Tests: 4 - Portfolio: 5

I design, develop, test, maintain and enhance applications using Microsoft technologies that include .NET Framework (C# and Visual Basic .NET), WinRT, WPF, ASP .NET, DirectShow, Media Foundation. I am an idependent contractor and I do all the work myself, from start to finish. My interests include multimedia applications and applications leveraging popular web APIs including Bing Ads, Google AdWords, Google Analytics, YouTube and eBay. I enjoy programming complex algorithms involving image processing, computer vision and video and image encoding standards in C and C++ on various operating system platforms that besides Microsoft Windows include Linux and UNIX. I have worked on applications that stored data in Microsoft SQL Server, SQL Server Express, SQL Server Compact Edition, MySQL, Oracle Database, IBM DB2. Geographic Information Systems (GIS), artificial intelligence, and machine learning are my educational and professional backgrounds. I am looking forward to help you and your clients to implement efficient solutions that will innovate your line of business and enhance your customer experience.

$67.77 /hr
2,855 hours

John K.

John K.

Computer Scientist

United States - Tests: 13

I have developed a wide range of software solutions for a diverse set of employers and clients, including Google,, NASA, US Air Force, US Navy, South Florida Water Management District. From web search to data mining, web sites to truck scales, and hypoxic pilots to Martian rovers, my software solutions have helped people solve their problems. My core skills are in software architecture: design the system right and the implementation flows like water. I am looking for tough problems that require novel solutions. I have experience in C/C++, Ruby, Perl, PHP, Rails, MapReduce, and SQL and non-SQL databases, a strong mathematics background, and a Ph.D. in Computer Science. When you select a provider, keep in mind that hourly rate is only one variable in the total cost calculation. I provide quick turn arounds with stable products. While my hourly rate is high, my total cost to you is not. Nor do I rely on code generation tools available to the masses. You will receive custom software tailored to you situation.

79% Job Success
$72.22 /hr
550 hours