Data Science Professionals & Consultants

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Data Science Job Cost Overview

Typical total cost of Upwork Data Science projects based on completed and fixed-price jobs.

Upwork Data Science Jobs Completed Quarterly

On average, 28 Data Science projects are completed every quarter on Upwork.

28

Time to Complete Upwork Data Science Jobs

Time needed to complete a Data Science project on Upwork.

Average Data Science Freelancer Feedback Score

Data Science Upwork freelancers typically receive a client rating of 4.83.

4.83
Last updated: May 1, 2015

Popular Data Science Searches

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  1. Tom L.

    Tom L.

    Data scientist, Python, R Programmer

    Canada - Last active: 6 days ago - Tests: 9

    Over the last 12 years, I worked as research assistant/associate in data analysis. I developed algorithms in processing and performing statistical analysis using R, Perl, Java. I am proficient in various Microsoft Office Applications especially MS Excel, MS Word, and MS Powerpoint. I have strong oral and written communication skills. I am a strong self-starter and able to work well independently. I am hardworking and can work effectively as fast as I can.

    $27.00 /hr
    32 hours
    5.00
  2. Taras Pashkevich

    Taras Pashkevich

    Master of PHP, JS, Expert in Python

    Ukraine - Last active: 1 month ago - Tests: 10 - Portfolio: 2

    Mostly do backend jobs (highload, security issues, architecture, algorithms), good in jobs that require high responsibility. I can create the system from code to production configuration. Have experience with Java desktop applications creation. Do TDD, UnitTesting, write documentation and produce clean code. Familiar with design patterns, use them where they're needed. Code in Python on my free time.

    $25.00 /hr
    35 hours
    4.86
  3. Zlatomir Zlatev

    Zlatomir Zlatev

    Desktop Apps,Databases,Bioinformatics,Statistics,R-project,web Scrap

    Bulgaria - Last active: 2 days ago - Tests: 3 - Portfolio: 2

    I have 14+ years of programming experience and a Master's degree in Bio- and Medical Informatics. I'm good at User Friendly GUIs, Data Reorganization, File Format Conversions (including text and binary data formats), Web Scrapping, Desktop Applications (Visual FoxPro, C# recently), Databases (a lot of experience), Bioinformatics, Statistical Analysis, R-project (including C code compiled for R to speed up some time consuming computations), SQL, Microsoft Office Excel Automation (VBA code sent from a desktop application to Excel to make it do things), Programs to Automatically fill Acrobat PDF Forms, Text Parsing, Mapple, C, C++, C#, Audio/Video formats conversion, Molecular Biology, Genetics and more. Keywords: Bioinformatics, Desktop Applications, Molecular Biology, Genetics, C, C++, C#, Mapple, PDF Forms, edgelist, edge list, Databases, database, Statistical Analysis, R-project, VBA, Automation, Medical Informatics, Algorithms, algorithm, File Convert, files conversion, Text Parsing, parse, user friendly graphical interface, GUI, Audio, Video, website scrap, scrapping, wordcloud, wordclouds, word cloud, word clouds, C#.

    $19.96 /hr
    163 hours
    4.94
  4. Aaron M.

    Aaron M.

    Data Scientist:Machine Learning, Statistics, R, Python, Java, VB/Excel

    United States - Last active: 24 days ago - Tests: 5 - Portfolio: 1

    I work with clients on defining, implementing and managing data analysis and data management projects. My expertise lies at the intersection of Statistics, Computer Science and Business acumen. Specific areas of interest to me are education, healthcare, finance, real estate, and energy. Analysis: R (statistics), Python (data munging), Java+Scala (machine learning / big data), VB.NET/Excel (financial modelling) ** Apache Hadoop, Hive, Spark with MLlib (big data ecosystem) ** MongoDB, Neo4j (NoSQL) + MySQL, Monetdb (SQL) ** Gephi (networks/social graph processing) ** Weka (machine learning) Visualization: Tableau (rapid dashboarding), Shiny (R package for interactive statistical dashboards) Environments: Linux, Windows, and Mac (least experience) Productivity: Git (source code control) Web Applications: Play 2 Framework (modern Java/Scala-based, reactive websites) I believe the key qualification to be a Data Science practitioner is an analytic and curious mindset. That said, many hiring decisions seem to hinge on specific skills. Let me know if there's a tool or technology you don't see on my list, and I'll let you know if I've worked with it before.

    $200.00 /hr
    948 hours
    4.99
  5. Sarge R.

    Sarge R.

    C++, CSharp .NET, Java Developer or Project Manager

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

    - Algorithms & Data Structures, Discrete Mathematics, Graph Theory, Performance Optimization ( http://ioi.eduardische.com/people/2056 , http://community.topcoder.com/tc?module=MemberProfile&cr=23291407 ) - Machine Learning, Natural Language Processing, Neural Networks, Data Science, Semantic Web - Project Management, Productivity Increase, Work Breakdown Structure, Automation, Definition of Standards - Web development C/C++, Java, C#, .NET, ASP.NET, WEB Services, XML, HTML, JavaScript, MATLAB, SQL, RDBMS, OLAP, Multithreading, Windows API, Project Management, Technical Design, Functional Design, Debugging, Profiling, Coding, Assembler, Caching, Amazon EC2, VMWare Virtual Machines, Data Mining, Dynamic Programming, Reinforcement Learning, Clustering, Logic, Programming Pearls and Best Practices, Mentoring, DOS, Batch scripts, SVN, Tortoise SVN, Rational ClearCase, ClearQuest, Visual Studio, Eclipse, Sun JVM, JRockit, Hudson, MySQL, MSSQL, RDF, Oracle Primavera Portfolio Management

    Groups: Application Developers Alliance

    $33.33 /hr
    2,583 hours
    4.99
  6. Pablo C.

    Pablo C.

    Data Scientist

    Argentina - Last active: 3 days ago - Tests: 4 - Portfolio: 6

    What are the most relevant variables? How are they related (if any)? What values must they take in order to explain some event? I'm familiar answering this kind of questions, as well as making graphs to show information, build automatic systems to process and make predictions, and all kind of data science stuff (founded the site datascienceheroes.com). Further than working as a consultant, I can teach you how to build solutions through R. From Data Science theory to the building and application of your own predictive models, based on your data. Found the e-learning course: http://datascienceheroes.com/learning.html. I've been doing data analysis for the last 9 years, working in several industries such as telco, banking, farming, financial, social network analysis, bio-technology, oil and NGOs. My education is based on Information Systems (holding a PhD degree) Contact me if you have questions to address through data, or if you want to learn R in a very didactic way.

    $44.00 /hr
    222 hours
    4.33
  7. Quang Nguyen

    Quang Nguyen

    Natural Language Processing - Machine Learning - Computer Vision

    Netherlands - Last active: 2 days ago - Tests: 7

    Experienced engineer and researcher in the field of Artificial Intelligence (AI). Have worked as a scientific data analyst, algorithm developer and software developer for mobile apps. Bsc. and Msc. in Artificial Intelligence, obtained at the University of Amsterdam (UvA) in the Netherlands / Holland. Also (co-)author of 3 scientific publications on Image processing. 1. deviantArt in Spotlight: A network of Artists, Leonardo - MIT Press Journals 2. Explorative Visualization and Analysis of a Social Network for Arts: The Case of deviantART, Journal of Convergence (JoC) 2(1):87-94 3. A Color Based Rangefinder for an Omnidirectional Camera, Proceedings of the International Conference on Intelligent Robots and Systems in St. Louis, Missouri, USA, 2009. Also experienced in mobile app development which I tend to do as a hobby. My interest lays primarily on cross-platform app development which means targeting Flash, HTML5, Android, iOS and Windows Phone 8. Keywords: Machine learning, pattern recognition, supervised learning, unsupervised learning, computer vision, image processing, image analysis, feature extraction, feature analysis, classification, information processing, data mining, data analysis, natural language processing, speech recognition, speech synthesis, knowledge representation. Matlab, Prolog, Java, Javascript, HTML5, C++, Python, Latex. OpenCV, Weka, libSVM, Android, iOS, Windows Phone 8.

    $30.00 /hr
    414 hours
    4.98
  8. Rahul Singh

    Rahul Singh Agency Contractor

    Search/NLP/Semantic/Predictive Models/Machine Learning

    India - Last active: 06/18/2014 - Tests: 3 - Portfolio: 3

    I have good experience in the field of big data, machine learning, search, natural language processing, semantic web and knowledge modeling. I have worked on Named Entity Recognition, RDF, SPARQL, JSON, XML, Hadoop, Mongodb, Couchdb, ElasticSearch, Solr, Lucene, Mahout, R, Gate, Apache-Jena, Dbpedia, Ektorp, Weka, Jackson. I have a good experience in programming languages such as Java, R, SAS, Python. I have extensive experience of applying machine learning algorithms to solve complex business problems. I am a post graduate in Electrical Engineering, IIT Kharagpur (2004-2009).

    Associated with: OSBII Agency

    $55.56 /hr
    3,615 hours
    5.00
  9. Volodymyr Kostanda

    Volodymyr Kostanda Agency Contractor

    iOS/Android/MacOS/Win/ObjectC/C#.NET/C++/Delphi/Java/Web/JS/ASP/PHP/QA

    Ukraine - Last active: 3 days ago - Tests: 42 - Portfolio: 40

    Owner and CEO at AdoriaSoft LLC. AdoriaSoft offers full cycle software development services and implements all stages of projects for our customers: - Research and estimation - Requirements definition - Architecting - Development - Graphical design and User experience design - QA - Support and updates Platforms that we develop for: - iOS (iPhones and iPads of different versions) - Android phones and tablets - MacOS - Web - Windows desktop - Windows Server - Windows CE - Windows Mobile PPC and SP 5.0, 6.0, 6.5, 7 editions We - have different real devices for testing (Android phones and tablets, iPhones, iPads of different generations, Macbooks, etc), no emulators. - work with both native and crossplatform frameworks - use an established design/development/testing lifecycle, follow scrum - have our own development servers with tasks management system (JIRA), source control (Git), continuous integration and build server (Bamboo), etc. - can easy work with time zones like PST, EST, etc. - offer high quality and cost effective solutions for our customers Technologies/Languages/Libraries/Frameworks: - ObjectiveC, iOS SDK, Mac OS SDK, XCode - Java, Android SDK - C++, STL, Boost, ATL, WTL, COM, MFC - Windows API, DirectShow, DirectSound, Sockets, Completion Ports, OLEDB, TAPI, GDI - C#, Managed C++, ASP.NET, LINQ, ADO.NET Entity Framework, WPF, Compact Framework, Mono.NET, Monotouch, Xamarin - Appcelerator Platform, Titanium, PhoneGap - MS SQL Server, T-SQL, Oracle, MySQL, NoSQL, MongoDB - Cloud platfoms: Amazon Web Services ( AWS ), Microsoft Azure - Web technologies: REST and SOAP web services, JavaScript rich client libraries, HTML5, CSS3 Our competences: - business automation software - System utilities for MacOS, Windows and mobiles platforms - Information security, cryptography, steganography - client-server applications - Wireless 3G/4G, Bluetooth, WiFi applications - VoIP, voice codecs, data signal processing - Complex Web applications and portals (ASP.NET, PHP, REST web services, JavaScript rich clients)

    Groups: Application Developers Alliance

    Associated with: Adoriasoft

    $29.00 /hr
    15,162 hours
    4.90
  10. Chris Davoren

    Chris Davoren

    Experienced writer, proofreader, web developer and software engineer.

    Australia - Last active: 01/27/2014 - Tests: 6 - Portfolio: 1

    I am currently a medical student on deferral from my studies. I have extensive experience writing, editing and proofreading both general and specialised works; this is a requirement for graduate entry into medicine here in Australia. I am currently deferred from my studies while taking care of family, and am looking to put my skills to good use while earning some money. I am dedicated, reliable and always available for communication regarding current or future work. I also have previous experience in software engineering and development, including paid work as a web developer on research projects at both Queensland University of Technology and University of Queensland.

    $10.00 /hr
    85 hours
    5.00