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. David Mestre

    David Mestre Agency Contractor

    Python, Web Scraping, Data Analysis, Data Science, Translation

    Spain - Last active: 5 days ago - 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, matplotlib, pandas, ggplot, numpy, csv, re, json, urllib, urllib2, socket, httplib, sklearn, BeautifulSoup, selenium, requests, lxml, xml, sys, so, subprocess - IDEs: iPython notebook, Komodo Furthermore, I am specialized in editing scientific and technical texts and proficient in American and British English. I'm a native Portuguese speaker living in Spain since 2008, I can offer you translations from English to Portuguese or Spanish at a reasonable price. Whether you need to translate a casual or formal text I can provide you with a prompt and culturally sensitive translation.

    Associated with: TalkDocs Pro Agency

    $33.33 /hr
    854 hours
    4.96
  2. Ahsan shafiq C.

    Ahsan shafiq C.

    Data Scientist/R Developer

    Pakistan - Last active: 25 days ago - Tests: 2 - Portfolio: 5

    I have Masters Computer Science with focus on Data Mining and Machine Learning. I have been doing statistical data analysis in R for 2+ years now and have experience working with a variety of single/multiple regression, multi class classification and clustering techniques. On the other hand, I have 5+ years of experience in Software Development and Design in various leading technologies. I have worked for International Customers and helped them growing their business and expanding the profitability. Over the last 5 years, I have developed a wide range Mobile applications, which include iPhone/iPad/Android/J2ME. I have developed both games and eCommerce applications for iPad/iPhone. I have been involved in development of: - Ruby on Rails - iPhone/Android Native Applications for the Enterprise - iPhone/Android Games Specialties: iPhone SDK / Android / J2ME / Symbian / BREW / BlackBerry Cocos2d / Cocos2d-x / Unity3D / OpenGL ES / Quartz 2D Box2d / Chipmunk Ruby on Rails (ROR) C / C++ / Objective-C / Cocoa Framework / C#

    Groups: Application Developers Alliance

    $30.00 /hr
    3,366 hours
    4.82
  3. Volodymyr Kostanda

    Volodymyr Kostanda Agency Contractor

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

    Ukraine - Last active: 8 days ago - Tests: 42 - Portfolio: 41

    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
    15,167 hours
    4.90
  4. Eugene Krevenets

    Eugene Krevenets Agency Contractor

    Full Stack Developer (Node.js/Angular.js/Mongo/Python)

    Montenegro - Last active: 11 hours ago - Tests: 3 - Portfolio: 7

    Hello there, I'm full-stack developer, with a higher mathematical background. # My stack (mainly) * Front end: AngularJS, RequireJS, SASS, LESS, coffeescript, three.js, canvas, WebRTC, webgl, mobile, socket.io, phonegap; * Back end: Node.js, Python Django, Jinja2, flask, MongoDB, MySQL; * ENV: VBox, Vagrant, Docker; * Principles: TDD, BDD, SOLID; * Public services APIs: 4sq, Facebook, Google, Instagram, OpenStreepMap, Stripe.com, Twitter, UserVoice, YouTube and other; * Other: Mathematical model, AI; # Briefly about me: ## Social-net startup Now I was working on startup - Realaxy - its a 3d social net. Here is our widgets http://pressanykeytocreate.blogspot.com/2013/07/realaxy-in-closed-beta-under-cover-i.html. We have created a flash application with tons of 3d, heavy UI and strong interaction with the server REST API. ## Gamedev I was working in Gamezhero (http://www.gamezhero.com) studio as a developer and team leader for a more than five years. There I have developed tons of casual games and game frameworks. ## Pet projects ### Game engine Here is my javascript game engine main focus on complex, multilayered architecture for maximum flexibility of game objects: * DarlingJS - http://darlingjs.github.io ### Other projects http://hyzhak.github.com In free time research javascript for client side, also for server side (node.js). Developed some mobile application for Android and Blackberry Playbook. Also lead some tech-blogs: * http://pressanykeytocreate.blogspot.com (English version) * http://anykeytocreate.blogspot.com (Russian version)

    Associated with: jakijak

    $40.00 /hr
    2,720 hours
    4.70
  5. Theodore Petrou

    Theodore Petrou

    Data Scientist Producing Data Products

    United States - Last active: 12/02/2014 - Tests: 2 - Portfolio: 2

    I am a data scientist looking to help you maximize the value from your data by building data products that will help empower decision making. These products can be the form of automated reporting through SQL querying via Excel VBA scripting all the way to a front-end website. I build these products through knowledge of Python, R, SQL, Excel VBA, Flask, D3, HTML/CSS, Javascript and more. I am also available to do web-scraping as I have scraped hundreds of thousands of news articles for my last project.

    $120.00 /hr
    0 hours
    0.00
  6. Alex Dodge

    Alex Dodge

    Computational Linguist

    United States - Last active: 09/15/2013 - Tests: 3

    I have several years of programming experience, in various languages but mostly Perl, Python, and Javascript. I've worked as both a web developer and a backend developer, and I pick up new skills quickly as the job requires. I'm currently pursuing a master's degree in computational linguistics. My research is in information extraction and sentiment analysis.

    $55.56 /hr
    0 hours
    0.00
  7. Walter Moore

    Walter Moore

    Hacker, Automator, Analyst, Revenue Generator, Cost Reducer, Trader

    United States - Last active: 08/14/2014 - Tests: 1

    My educational track frequently meandered off the beaten path, initially studying music theory which catalyzed my interest in mathematics and physics; subjects which would unintentionally prepare me for graduate work in financial engineering. The culmination of these studies would result in the development of a career in software engineering focused on quantitative analysis and algorithmic trading in the financial markets. My introduction into the industry would be realized in analyzing, developing and improving financial models for market making energy, foreign exchange, treasury and agricultural futures and options. Being thrown into a complex software environment with only the minimal understanding of standard engineering principles, I quickly realized that the key to my success in implementing many of these models would reside in improvement of my systems engineering prowess. Some modeling successes, many late nights at the office, and more than a few beers later, I was working as Manager of Financial Engineering at Hanley Group Capital. As I developed my software engineering skill set, learned new languages and design paradigms, and matured as an "implementer" as opposed to a "theorist", I quickly found myself rising in rank on the software development side. A few successful major projects down the road, and a major acquisition in the bag, I had ascended the engineering ranks to Director of Software Development at INTL Hanley. In that capacity I oversaw the development, management, operation and delivery of high frequency trading functionality for proprietary market making in the futures and options markets. Emerging challenges in the US regulatory environment began to directly affect a large chunk of our OTC activities at INTL Hanley. This situation was the catalyst for my proposition of a design for a liquidity routing, monitoring, reconciliation and reporting system spanning all companies under our parent entity INTL FCStone. This plan was approved by global INTL leadership and I was awarded funding and autonomy to create a global division for data exchange. This program maintained and opened up new OTC trading activities in the US and abroad, allowing INTL to remain competitive with much larger investment banks, brokerages and clearing organizations. Since my time at INTL, I have joined with a couple other Chicago trading industry technical leaders in order to build a consulting firm focused on niche high performance trading system development. We employ an extensive high frequency trading system portfolio in the futures and options markets, develop and operate a custom market analytics, system automation, and data visualization suite in order to protect draw-down risk and increase the profitability of existing strategies for our clients. Warning: I stumbled upon bitcoin a couple years ago when my trading peers began working with the crypto-currency; since then I have been afflicted with the bug! Specialties: Node.js, MongoDb, RabbitMq, Java, C#, SQL, Matlab, Python, VBA, Financial Modeling, Time Series, Econometrics, Physics, Mathematics, Probability, Statistics, Proprietary Trading, High Frequency, Arbitrage, Energies, FIX, FAST, Options, Futures, Derivatives, Position Management, Risk Management, Execution, Matching Engines, Simulation, Backtesting, Data Visualization, Analysis

    $200.00 /hr
    0 hours
    0.00
  8. Alex Pineda

    Alex Pineda

    e-Commerce Data Analyst

    Canada - Last active: 2 months ago - Tests: 2 - Portfolio: 1

    I help e-Commerce companies collect, store, combine and analyze data. I get your essential metrics up and running whether it be a custom CMS built on top of MySQL or various sources such as Magento, Google Analytics and more. I can automate monthly and quarterly reports with your new findings. I've worked with >$30m dollar companies in building their automated data analysis systems. I can certainly help you gain the insight and sophistication you are after. In my previous life I have been a front-end developer, engaged in printer solutions programming (RIP development), to mostly back-end API integrations and advising on technical strategy. I co-organized Startup Weekend in my city. I host workshops and events as well as own and operate www.introtojavascript.com and am building it into a resource.

    $83.33 /hr
    0 hours
    0.00
  9. Ataollah Etemadi

    Ataollah Etemadi

    Project Management and Big Data Guru

    United States - Last active: 04/30/2013 - Tests: 1

    30+ years experience in project management and Big Data. After obtaining my PhD when I turned 24, I started working as a space scientist on high-profile NASA, ESA and IKI missions. Later in my career, my work involved management of large-scale multinationals teams as well as much smaller dedicated teams. I was the software engineer for the multi-billion dollar Infrared Space Observatory and Cluster missions. My background also includes Computer Vision and Artificial Intelligence research. I am deeply familiar with project management and the analysis of Big Data especially time-series. I have also published a number of scientific papers on space science and pattern recognition. On oDesk I have been managing teams of software developers and delivering results since almost it's inception. As of this article I am number two on oDesk for the Test for Independent Contractors and Staffing Managers where I was number one for some years. My core expertise and true passion is project-management especially when dealing with software or Big Data. My private time is spent as the president of the Austin Inventors and Entrepreneurs Association and in producing and hosting two TV talk shows.

    $300.00 /hr
    0 hours
    0.00