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On average, 58 R projects are completed every quarter on Upwork.

58

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R Upwork freelancers typically receive a client rating of 4.77.

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Last updated: August 1, 2015
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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. Kora R.

    Program Manager

    India - Tests: 1

    Saanvi Tech is a provider of end-to-end big data services and offerings including data management, data modeling & data analysis, consulting, project implementation, product development and staff augmentation for data analytics resources. Saanvi Tech is the development for the stock screener and single click backtest portal http://paststat.com and http://asxiq.com Our team of 10 + engineers have expertise in Python (Django) , numpy, pandas libraries HTML5/CSS/javascript, Jquery/ajax/Angularjs/nodejs/socketio/faye.js Celery, task queue/job queue for performing background tasks RabbitMQ, a high performance messaging system used for background tasks/processing databses -> mysql, postgresql/mongodb/riak Amazon EC2 server administration, maintenance, scaling, automatic backup system to S3 etc, Amazon Elastic MapReduce to analyse and process large amounts of data using the python API Scala Play framework with React™ javascript frontend Knowledge of statistics and trading strategies building

    $27.78 /hr
    0 hours
    0.00
  3. Jie Qin

    SAS Certified Professional

    United States

    15 years SAS, SQL, predictive modeling experiences in consumer banking, financial services and direct marketing industry

    $30.00 /hr
    0 hours
    0.00
  4. Stephanie Hintzen

    Stephanie Hintzen

    Bioinformatics Scientist

    United States - Tests: 2 - Portfolio: 1

    I am looking to keep learning and to expand my skills through some free lance work. I hope to try new things and to earn some extra money. Most of my skills are in biology, but I have considerable computer experience. In addition to the skills listed below, I have also dabbled (and can code my way out of a bag) in: C++, PHP, MSQL But as I don't code in them often, I didn't want to list them as something I am "skillful" in. Check out my professional profile and connect with me on LinkedIn. http://lnkd.in/GgsAN6

    $12.00 /hr
    10 hours
    0.00
  5. Alan Vayda

    Alan Vayda

    Data Scientist

    United States - Tests: 1

    I am an experienced data scientist with a background in artificial intelligence and robot vision. I also do software development for complex scientific applications and algorithm development using artificial intelligence, pattern recognition, image processing, statistics, and advanced mathematics techniques. I primarily work in R, Perl, and Python. Have also worked in Lisp, Prolog, C, C++, Java, and Fortran. My experience includes related database design and integration for large complex datasets. In addition to independent work, I also manage software development teams. I also have an additional specialty in assisting customers with the development of government proposals. Responsibilities include storyboarding, organizing, writing, editing, formatting, graphics, project planning, budgeting, forms, and proposal team management. Customers vary in size from startups to Fortune 500 companies and proposal scale varies from SBIRs under $100K to over $100M. Experience with funding agencies including: Army, Air Force, DARPA, DOD, DOE, DOT, Transportation Research Board of the National Research Council, NIST, and USPS. Employment: 6 years as an independent consultant Soar Technology (Small Company) NovoDynamics, Inc. (Startup) Environmental Research Institute of Michigan (Non-Profit Research Institute) Education: Ph.D. Electrical Engineering - Purdue University M.S. Electrical Engineering - Pennsylvania State University B.S. Engineering Science - Pennsylvania State University

    $150.00 /hr
    0 hours
    0.00
  6. Alekh Jain

    Alekh Jain

    ETL / Data Warehouse Architect / Programmer

    India - Tests: 2

    Having 7.5+ years of varied Experience as a Techno-functional consultant. I served as a Data warehouse specialist, ETL expert and Business Analyst (pharmacy), delivery lead (40+ people), application architect, senior developer and a team player. Technologies I have worked on include EAI and middleware (1.5 yrs.); OLTP, ETL, OLAP, DW / BI (6 years). S/w: Oracle, DataStage, Unix, Netezza, SQL Server

    $44.44 /hr
    5 hours
    0.00
  7. Rob H.

    Rob H.

    Expert Infrastructure Architect and Data Integration w/Biz background

    United States - Tests: 4

    I have over 19 years experience in the IT field. My main experience is with iSeries(AS/400) at a senior engineer/architect level. I have a very deep background in performance analysis, OS support, upgrades, and configuration. I also have an expert background in Information Management that includes data governance assessments and implementations. I have experience with Infosphere CDC(DataMirror), Information Server, DataStage, QualityStage, Infosphere Discovery. I am looking for opportunities to assist you with my data management skills on all platforms(not just iSeries). Also experience with HMC, Oracle 10 and 11g(RAC), CDC, DB2, Solaris, Tru64 Unix, MPE, HP3000, Control-M, iDoctor, Performance Explorer(PEX), MB Performance Tools, Performance Navigator, Websphere MQ, Mimix, iTera, BRMS, DBMon, Visual Explain, Tibco, Aldon, MKS Implementer, Robot, MAPICS, Interactive Voice Response systems(IVR), PKZIP, Java, CL, RPG, ILE, Toad.

    $22.22 /hr
    2 hours
    5.00