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On average, 30 Data Science projects are completed every quarter on Upwork.

30

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Data Science Upwork freelancers typically receive a client rating of 4.86.

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Last updated: September 1, 2015

Popular Data Science Searches

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  1. Anis Mirra

    Anis Mirra

    Data Science, Consulting

    Greece - Tests: 5

    Undergraduate Student of Physics and Astrophysics, University of Florence (IT). Qualified in R programming, SQL, Python and C++. Specialisation: • Data analysis • Data visualisation • Descriptive and predictive data mining Methods and Tools: • Statistical Analysis • Programming in R • SQL, Python, C++

    $30.00 /hr
    0 hours
    0.00
  2. Pavel Logacev

    Pavel Logacev

    Data Science | Statistics | R Programming

    Germany - Tests: 4 - Portfolio: 3

    I have a PhD in Cognitive Science and a MSc in Computational Linguistics, as well as several years of experience in statistical data analysis and software development in R. I have developed software in pure R as well as in C/C++/Rcpp, with a focus on the implementation of machine learning algorithms and statistical techniques. I enjoy understanding all kinds of data, as well as helping others understand it and convert it into actionable intelligence. I am particularly interested in churn analysis and statistical consulting regarding usability studies or A/B testing in advertisement and e-commerce. I have experience in analyzing and reporting on data from sectors as diverse as psychology, education, health, finance, SEO and E-commerce. Most recently, I have analyzed online user behavior for www.immobilienscout24.de, and created a Bayesian model of conversion and profitability to manage campaigns on Google Adwords. I specialize in churn analysis and survival random forests, but I can help you with anything from simple ANOVAs or linear mixed effects models in lme4 to Bayesian methods in RStan. Take a look at my code on my github profile: http://github.com/plogacev

    $45.00 /hr
    512 hours
    4.93
  3. waldemar kwasniewski

    R Programmer, data science, data mining

    Poland

    I am an experienced R programmer and data analyst, ready to use my knowledge, practice and interest in data science to find a quick, reliable and clever way to perform any task you have to be done. I can help you to extract actionable knowledge form your data, find dependencies, build predictive models, translate your concepts into formulas, and your ideas into algorithms. My main fields of expertise are: • data mining and cleansing - fluent in extracting useful data using fast and flexible tools; • market analysis, statistical computing - finding patterns in data to gain interesting insight, based on solid statistical knowledge and visualised in an approachable way. I strive for excellence in each aspect of the project, guaranteeing maximum focus on detail, providing a solution tailored to the customer's expectations and top-class communi I am looking for projects in mathematics, machine learning, signal processing

    $22.99 /hr
    0 hours
    5.00
  4. David Mestre

    David Mestre

    Python, Web Scraping, Data Analysis, Data Science

    Spain - Tests: 10 - Portfolio: 2

    - Data cleaning, data analysis, modeling and simulation techniques using Python - MySQL/MongoDB/Sqlite/Sparql/Postgresql - System administration - Machine Learning - Web scraping/crawling with python - Parsing xml/csv/json - Python libraries: pylab, scipy, pandas, matplotlib, ggplot, seaborn, bokeh, numpy, csv, re, json, urllib, urllib2, socket, httplib, sklearn, BeautifulSoup, selenium, requests, lxml, xml, sys, so, subprocess - IDEs: iPython notebook, Komodo Github: https://github.com/dlmestre/mywebpage

    $40.00 /hr
    1,047 hours
    4.97
  5. 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
  6. David Stephens

    David Stephens

    Data Analyst

    United Kingdom - Tests: 2

    Hello, I am a Data Analyst with 5+ years professional experience with a background in scientific research including publishing peer-reviewed papers. I have BSc (1st class honours) in Geographical Information Systems and Science. I am most interested in contracts that would take advantage of my R skills for data analysis and visualisation. Including: geospatial analysis, statistical modelling, data mining or building shiny data apps. A summary of my skills and experience: - Diverse types of research including geospatial analysis, statistical modelling, image analysis, GIS. - Daily use of R with experience of packages such as: dplyr, ggplot2, caret, sp, rgdal, gstat. - Developing interactive data tools using R’s ‘Shiny’ framework - Also have experience scripting in Python and SQL Statisitcs: - Linear regression, principal component analysis, t-tests. - Machine learning algorithms (random forest, neural networks) - Cluster Analysis (unsupervised classification) - Non-parametric significance testing (monte-carlo simulations) - Geo-statistical Interpolation (kriging) Other: - Image Analysis: Object-based image segmentation - Textural analysis for pattern recognition - Working with PostgreSQL/postGIS databases - Software: ESRI ArcGIS; Erdas Image; GRASS; QGIS; eCognition; SPSS.

    $35.00 /hr
    0 hours
    0.00
  7. Heather Turner

    Heather Turner

    Statistical Consultant/R Programmer

    United Kingdom - Tests: 1 - Portfolio: 10

    Motivated and reliable PhD-qualified statistician with internationally recognised expertise in R programming. Over ten years experience providing statistical and programming support to investigators in statistics, social science, drug discovery, bioinformatics and agriculture. www.linkedin.com/pub/heather-turner/38/a0a/313/

    $100.00 /hr
    16 hours
    3.80
  8. Alexey Karnachev

    Alexey Karnachev

    Computer scientist with programming skills

    Russia

    I have experience in machine learning field, applied ML algorithms for social and technical data analysis.Engaged in system monitoring and abnormal conditions detection. Also, have a good skills in programming (R, Python, Java). Develop web crawlers for different purposes.

    $7.00 /hr
    0 hours
    0.00
  9. Vinay Sawant

    Vinay Sawant

    BigData Hadoop Developer/Analyst/Data Scientist

    India - Tests: 1

    • BigData Hadoop Certified • Certifcation of HBase by IBM from BigDataUniversity. • Certifcation of Data Analysis using R from BigDataUniversity. • IBM Pig Certified from BigDataUniversity • IBM Hive Certified from BigDataUniversity • JAQL Certified by IBM from BigDataUniversity. • Knowledge in Big Data Hadoop and its components like HDFS, Map Reduce, Apache Pig,Hive, Sqoop, and HBase,Phoenix. • Knowledge of Setting up Hadoop Cluster (Single and Multi Node in Ubuntu) • Knowledge of installing writing the Pig scripts to reduce the job execution time • Currently pursuing Certification course of Data Science from Coursera • Currently pursuing Certification course of Machine Learning from Coursera by AndrewNG • Currently pursuing Certification course 15.071X, THE ANALYTICS EDGE- Analytics! • Currently pursuing Certification course of Practical Machine learning from Coursera

    $13.33 /hr
    32 hours
    3.93
  10. Vineeth Mohan

    Vineeth Mohan

    Data scientist

    India - Tests: 1

    Auther of the book Elasticsearch blueprints - https://www.packtpub.com/big-data-and-business-intelligence/elasticsearch-search-patterns Elasticsearch certified trainer who have conducted trainer for number of MNC’s like microsoft , flipkart , cisco and philips Live project – factweavers.com/mediaBuzz/# Stackoverflow - http://stackoverflow.com/users/976646/vineeth-mohan Stackoverflow Careers - http://careers.stackoverflow.com/vineethmohan Linkedin - http://lnkd.in/hcsHyZ Github - https://github.com/Vineeth-Mohan Career (Experience –75 years) • Architect/Data scientist at Algotree Research private limited (June 2011 to Present) • Software Engineer at Yahoo! India (March 2009 – May 2011) • Internship as Service engineer at Yahoo!India (May 2008 – to February 2009) Career highlights and honors received ● End to end design and management of Newsmills from inception to completion. ● Knowledge acquisition and adoption of various open source tools and technologies ( Mahout , Elasticsearch , Opengamma , cleo , Rstudio-server , D3 js , Twitter Bootstrap) to meet the requirements of the management. ● Spot bonus award at yahoo ● Various appreciation awards from coworkers – yahoo ● Chairman of MACS(Model engineering college association of computer science students) – 2008 , various inter collage technical competition awards at collage. Behavioral Competencies ● Clear in-depth conceptual clarity on the subject along with knowledge gathering skills. ● Self-motivated and can work with less or no management. ● Passion to adopt the best suited technology and attain the best performance. ● Clearly sets the boundary between code quality and business deliverables. Technical Skills ● Languages: ● Application level languages – Java ● Machine learning tool – Mahout ● Statistical languages - R ● Scripting – Perl, Shell , Awk , Sed ● Web technologies – HTML,Javascript ,CSS , jQuery , Bootstrap. ● Expert in Technology and Tools : Elasticsearch , Lucene , Opengamma , Cleo. ● Systems: Unix Operating System (LINUX – Ubuntu , Debian , Red Hat) ● Strong computer fundamentals in Data Structures and Algorithms, automata languages and computation.

    $34.00 /hr
    95 hours
    5.00