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. HaWook Song

    HaWook Song

    Data Scientist

    United States - Last active: 4 days ago - Tests: 2 - Portfolio: 8

    I am a data scientist/analyst. My primary tool is R, which I use extensively in conjunction with Python, MySQL, PostgreSQL, NoSQL (e.g. MongoDB), and Linux commands. This is my blog: feelosophy13.github.io. What I do in general: - Data visualization (e.g. interactive dashboards) - Report automation - Machine learning and modeling - Data extraction, cleaning, feature selection, and preprocessing - Data mining and aggregation - API integration Prediction modeling: - Multivariate linear and logistic regression - Classification and regression trees (i.e. decision trees) - Linear and quadratic discriminant analysis (LDA and QDA) - Random forest and variable selection Clustering and segmentation: - Data normalization - Hierarchical and k-means clustering Visualization: - Visualizations via ‘ggplot2’, 'googleVis', and 'rCharts' packages - Interactive dashboard/application using 'shiny' package - Maps visualization

    $40.00 /hr
    208 hours
    5.00
  2. Tom L.

    Tom L.

    Data scientist, Python, R Programmer

    Canada - Last active: 13 days ago - Tests: 9 - Portfolio: 2

    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
  3. Andrew Bruce

    Andrew Bruce

    Expert market researcher with sales experience

    United States - Last active: 15 days ago - Tests: 7

    Specialize in: Generation-Y Interests Investigative Reporting Tech Education and Consulting Research Business Planning / Strategic Design Marketing I am a graduate of Ithaca College, a small liberal arts institution in Ithaca, NY. I hold a Bachelor of Science in Applied Psychology (Concentration in Forensic Psychology) and a minor in Legal Studies. As an undergraduate I was able to study a wide range of topics and great length due to the flexibility and personal attentiveness of the college. My major program focused on bridging the gap between the principles of psychology and the business world. Major topics of study included how to design business for optimal internal efficiency, how to most effectively reach target markets, and most effective styles and mediums of marketing communication. I have an immense amount of experience with the statistical program SPSS, and am skilled at interpreting, designing, and calculating business essential statistics. Furthermore, I pursued a minor in legal studies, and plan on pursing a career in the entertainment law field. I have an immense interest in intellectual property law, contract formation, and representative services. I am studying for the LSAT and plan to take the test in June of 2014; law school will follow. I am a tech junkie and have an enormous amount of experience in this department. If I do not have an answer for your tech related questions outright, I guarantee that I can find it. Thank you for you're consideration, please feel free to view my LinkedIn profile for more information; feel free to contact me with any questions. I offer sample employment services free of charge - 5 hours max.

    $25.00 /hr
    17 hours
    5.00
  4. Pablo C.

    Pablo C.

    Data Scientist

    Argentina - Last active: 10 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
  5. Setu M.

    Setu M.

    Researcher | Research Assistant | Data Analyst

    Jamaica - Last active: 1 day ago - Tests: 4 - Portfolio: 6

    PDF Conversion - JPG | Excel | CSV | Word | OCR Excel Manipulation - Formulas | Pivot | Interactive Dashboards Data Manipulation - Contact Info | Sorting | Consolidation Web Research I have been in the field of research for the past 10 years, including work on my PhD dissertation. I have developed adept skills on project management, data management and analysis, literature review and scientific writing. I am therefore competent at conducting internet based research and technical analyses and writing.

    $16.67 /hr
    208 hours
    4.99
  6. Thomas N.

    Thomas N. Agency Contractor

    MD student w/ skills: Python, Excel, Data Science/Analysis/Viz/Scrape

    United States - Last active: 2 months ago - Tests: 7 - Portfolio: 6

    Over the past 5 years, I have developed a unique skillset that is mainly focused on manipulating, visualizing, and understanding data. As a medical student, I've utilized big datasets distributed by the CDC and other governmental organizations to find and anlayze trends in healthcare for research. My core competency lies in utilizing everything from smaller datasets in Excel to writing complete programming solutions to handle very large and complex datasets. I work primarily in python using the main data science libraries (pandas, numpy, scipy) as well as scrape my own data directly into a database using other python libraries (beautifulsoup, mechanize, scrapy). No matter the project, if my studies allow me to have available time, I can complete your data analysis, database manipulation, and other data related projects for you or your business efficiently and with close attention to detail. I also have experience in the following areas: SQL, MongoDB, Microsoft Access, and javascript libraries such as charts.js or D3.js. I am also very familiar and comfortable with medical terminology and am capable of distilling the information in to more accessible terms. I know how difficult it is to understand sometimes but I am able to generate content or review/edit content utilizing my medical school education.

    Associated with: MD pending

    $55.56 /hr
    3 hours
    5.00
  7. Jarek Zmudzinski

    Jarek Zmudzinski Agency Contractor

    Web application development

    Poland - Last active: 03/14/2011 - Tests: 14 - Portfolio: 13

    In my over 10 years of web development adventure I developed many sites (some of my latest work is in my portfolio) and I grew addicted to coding. About 6 years ago, bored by PHP, I stumbled onto Ruby on Rails which quickly became my favorite tool. I developed 3 large applications by myself and coauthored at least 2 more.I enjoy writing JavaScript code for some time now specializing in jQuery library.For over 4 years I was working as Expert Webdeveloper for largest online auction platform in Central and Eastern Europe, where I share my jQuery expertise among fellow webdevelopers. Later I got promoted to CTO of citeam.pl project (daily deals app). In late 2013 I got another promotion, to IT Manager. I am interested in everything from server administration, Ruby on Rails, node.js backend coding, HTML5, CSS3, JS frontend development to IT leadership focusing on employee engagement.

    Associated with: Toro Negro

    $33.33 /hr
    50 hours
    5.00
  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. Mario F.

    Mario F.

    Data Scientist / Machine Learning / Python

    Brazil - Last active: 11 days ago - Tests: 5 - Portfolio: 3

    I have experience using a wide range of machine learning algorithms, both for supervised (classification, regression) and unsupervised (clustering) learning, to solve real-world problems with data. If you hire me, these are the steps I will take to make your data project a success: - Understand your goals and expectations. - Clean and prepare the data. - Develop models respecting technical standards. - Report the performance in a test environment. - Deploy the model to production. Technical skills - Python - Scikit-learn - Numpy/Scipy - Vowpal Wabbit - Lasagne - XGBoost - Amazon Machine Learning - HTML Past Projects - Web scraping with Python - Sales forecast model for a multinational consumer goods company - Social media customer segmentation for e-commerce. Competitions - 35th of 3514 at Otto Group Product Classification Challenge. (Top 1%) - 37th of 285 at The Hunt for Prohibited Content Competition. (Top 3%) - 42nd of 1604 at Click-Through Rate Prediction Competition. (Top 13%) - 225th of 1528 at Driver Telematics Analysis. (Top 15%) - 99th of 485 at Walmart Recruiting II: Sales in Stormy Weather (Top 20%)

    $40.00 /hr
    5 hours
    5.00
  10. Sebastien Derivaux

    Sebastien Derivaux

    Business Intelligence & Analytics Expert

    France - Last active: 2 months ago - Tests: 1

    Expert in many areas of Business Intelligence and Performance Management. Holding a PhD in data mining and having previous experiences in predictive analytics. Great ability to produce dashboards and models in Excel (Power Pivot, SQL) with a good business orientation (efficient in accounting and financial analysis). You can see more detail here : http://fr.linkedin.com/in/sebastienderivaux/

    $33.33 /hr
    7 hours
    5.00