Top Upwork Freelancers

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  1. Joshua Kitz

    Joshua Kitz

    Data Analyst and Business Intelligence

    Canada - Last active: 1 day ago - Tests: 2 - Portfolio: 3

    Experience and Background ■ I have a Masters in Spatial Analysis and have worked extensively in data analysis and visual analytics. ■ I have created interactive reports and visualizations with tools such as Tableau, ArcGIS, MapInfo, Access and more. ■ I have created databases in Access and worked extensively with SQL server, and to a lesser degree with Oracle. ■ I also have a knack for technical and creative writing. ■ I have designed several RPG's as well as a simulation game of IT Business Management. Business Intelligence and Analytics Carree Objectives ■ Drive value by providing data driven insights to businesses and stakeholders. Provide that insight via analysis and visualizations that tell a compelling story. ■ Continue to expand my repetoir of Business Intelligence, Analytical, and Statistical tools -- which currently includes Tableau, GIS, SQL Server, Alteryx, SPSS, and R (to name those I have used the most). ■ Provide analysis that changes how the company or group views their business and customer/clients. ■ All based on meticulously crafted and validated visualizations, maps, and analysis.

    $44.44 /hr
    721 hours
    5.00
  2. Benjamin V.

    Benjamin V.

    NinjaTrader, TT, APIs, FIX, R, TradeLink

    Spain - Last active: 10 hours ago

    I am an expert quant developer (C#, C++ and R), with a solid background in software development, trading, physics, mathematics, engineering and research. I am experienced coding for traders and quants, and familiar with the mechanisms and workings of securities markets, exchanges and market data (both time & sales and full order book). I am experienced working with - and coding against - trading APIs and other common elements of the client/message server architectures typically seen in trading systems. I am an expert in systematic trading research, simulations, backtests, optimizations, and trading, and in the programming and use of R for statistical empirical finance work. I am the TickMaster ( http://tickmaster.webs.com ). I have degrees in Physics (MA, University of Oxford) and Petroleum Engineering (Imperial College, London). I am a new Elancer (as of September 2013), based in Madrid. My first language is English. I also speak fluent Spanish.

    $85.00 /hr
    962 hours
    4.77
  3. Alexander M.

    Alexander M.

    Web Analyst | Data Scientist

    Belarus - Last active: 1 day ago - Tests: 3

    Over past 4 years I've been working with the big american companies. They involved me into dozens of projects connected to the data analysis, web analytics and reporting. I am using one of the most exciting tools for providing data insights called Tableau. Since data analysis requires knowledge of any query language MySQL is another "tool" I am expert in. As web analyst I have a lot of experience in Google analytics, DoubleClick Floodlight, Google Tag Manager, SiteCatalyst, etc. I helped my clients with Google Analytics E-commerce implementation and set up. I am always in touch with any Google's updates and recommend to my clients best in class solutions existing on the market. I am very open for any new projects and ready to get started. Contact details: skype ID: alex_malyshko email address: malyshko.alexander@gmail.com LinkedIn: www.linkedin.com/in/alexmalyshko

    $30.00 /hr
    291 hours
    5.00
  4. Preston H.

    Preston H.

    20+ years expert SQL database designer preferring MySQL and PHP.

    United States - Last active: 2 days ago - Tests: 48

    I am one of the top database design specialists on oDesk. My sophisticated hand-crafted database design will save your organization significant time and money. I am a serious professional with over 20 years of experience as a programmer and database specialist. My emphasis has been on creating elegant SQL database design integrated with user-friendly front-end software (desktop and web applications). I have worked mainly as a database designer, programmer and database administrator for bioinformatics, biochemistry, molecular biology, and biomedical research applications. I also have extensive experience programming database-centric software (websites, web applications, desktop applications) for publishing, business, financial, personnel and other purposes. One of the things I enjoy most is creating database schemas which make sense for both programmers and non-programmers, designing with an eye toward flawless data integrity, maximum maintainability and optimal performance. I love crafting websites and web applications which perform with shocking speed. It makes for a better experience for users, developers and administrators. My expertly designed database systems - with well-written queries, intelligently chosen indices, and sensible caching strategies - can easily perform 10 to 100 times faster (using the same underlying hardware). My emphasis when working with clients is on their data and system usability, not specific trends or technologies. But in case you're wondering about some specifics, I strongly believe that the database data should be integrated with but also somewhat independent from a presentation/application layer. Data in the database should be easily accessible from one or many different applications built using one or multiple different technologies. Currently I favor PHP/JavaScript/HTML5 for web applications, RealBasic/Real Studio/Xojo for cross-platform applications [Mac OS X/Windows/Linux], Xcode for Mac OS X-only/iOS applications, Visual Studio for Windows desktop applications. I prefer using MySQL for back-end RDBMS, but I also use Oracle, Microsoft MS SQL Server, PostgreSQL and SQLite on a regular basis. If your data and information organization is already in great shape, and if you are satisfied with how your database-integrated software and website performs, then you probably don't need a high-end expert like me. I can make routine modifications, add to well-crafted existing systems, etc. But so can many other people. But if you're just getting started on a new system that you want done right, or if you suspect your database website programming strategy needs an overhaul, then I can get you on the right track in a short amount of time. * * * * * * * * Let me mention a few of the client-friendly policies and practices I apply with all my clients. I don't do these things to distinguish myself from other contractors. (I would hope they all do the same.) I do these simply because this is how I would want to be treated if I was the client: - I work for zero up-front payment; you can pay me when I'm done. - With fixed-rate contracts, if you don't love what I do for you, you don't need to pay for it. - You don't need to have your own web servers; I can host development and/or live production work on my own high-capacity servers. - I don't mind working on a client's servers, or doing dev work on my servers and transfering finished work to client's servers. - I do not charge clients for hosting their websites or software systems, or for moving their websites or software systems elsewhere. - I provide clients with root log-in access to all the work I do for them; you are welcome to log into the server (cPanel, FTP, and phpMyAdmin) at any time and copy or back-up or move any work I do for you. - If I am working for you, all work product, all source code, all database design belongs to you. Always. Period. - I am happy to work with you and/or other programmers you enlist to work on a project; I am happy to pass off development work. - I do not provide mysterious "black box" solutions. I am happy to have you look under the hood at everything I do. You don't need to know anything at all about the inner workings of a system. Or you're welcome to ask about the most intricate details. - If we're developing a system from scratch, I prefer to do so using very widely-available technologies (PHP/MySQL/JavaScript/HTML5) which you can hire countless other people to work on if you decide to have other developers work on your system. - Do not be embarrassed to ask ANY question! I enjoy working with clients who have zero technical know-how in programming/databases/etc., partially because I appreciate their expertise in OTHER fields (real estate, art, medicine, law, science, civics, etc.) If you already know everything about databases and programming you probably wouldn't need me, would you?

    $80.76 /hr
    443 hours
    4.99
  5. Renato Stanic

    Renato Stanic

    Game developer for 7 years now.

    Croatia - Last active: 1 day ago - Tests: 2

    I am an experienced Unity and UE4 programmer and designer. I have 7+ years of experience in game development of which 3 in Unity, 3 in Java and in UE4 since it came out around 11 months. I have experience with working alone and in teams, I know how to communicate with any members of a development team. I have used a wide range of version control and ticket tracking software, and therefore I know how to structure goals to meet deadlines. Listed below are my technical skills. — Programming languages: C/C++, Java, JavaScript, C#; — Java libraries: Slick2d, LWJGL; — Data/Markup: XML, XML Schema, JSON, HTML/CSS; — IDE: Visual Studio, Eclipse, Intellij Idea; — Asset Creation Software: Blender, Maya, 3dsMax; — Texturing Software: Photoshop, dDo, nDo, 3Do, MegaScans; — OS: Android, Linux, Windows, Mac OS X; — VCS: Git, SVN, CVS, Perforce; — Engines: Unity, CryEngine, UDK, Unreal Engine 4; — Utility: Makefile.

    $33.33 /hr
    307 hours
    5.00
  6. Stephen Zuniga

    Stephen Zuniga

    Web Developer / WordPress Developer

    United States - Last active: 10 hours ago - Tests: 5 - Portfolio: 3

    I'm a front-end web developer with about 5 years experience with WordPress creating themes and plugins from scratch. I recently released an open-source plugin (https://wordpress.org/plugins/stripe-for-woocommerce/) that integrates Stripe as a payment gateway for WooCommerce and have plenty more in the works. In addition to my WordPress work, I've developed a few jQuery plugins and countless responsive sites. I do a lot of testing before releasing a product to ensure that bugs are difficult to find if not non-existant.

    $80.00 /hr
    462 hours
    4.93
  7. Khaled Khamis

    Khaled Khamis

    Software Engineer

    Egypt - Last active: 2 days ago - Tests: 11 - Portfolio: 6

    Over the last 7 years, I have developed a wide range of web applications using PHP4, PHP5, MySQL,HTML5, JavaScript, JQuery, AJAX and CSS3 including sites for startup companies, small businesses and large scale organizations. My core competency lies in complete end-end management of a new web development project, and I am seeking opportunities to build systems from the ground up for you or your business. I also have some experience in: - Programming languages (C/C++, MS visual basic and Python). - Microcontrollers programming (C, Basic and Arduino). - Aware with MISRA C rules. - Very good understanding of object oriented programming. - Good experience in MVC design pattern. - Aware with software development cycles. - Aware with microcontroller architecture. - Software engineering and embedded systems. - Excellent knowledge in automotive engineering. - Web development (HTML, CSS, XML, PHP, ASP, AJAX, JavaScript, JQuery and MYSQL). - MatLab (GUI, Simulink). - Good knowledge in PLC and SCADA systems. - Computer controlled appliances. - Very good robotics knowledge. - Printed circuit boards design with (Altium DXP, EAGLE). - Single and double layers PCB design and fabrication with SMT. - Automation studio Electrohydraulic simulation.

    $30.00 /hr
    185 hours
    5.00
  8. Andy K.

    Andy K.

    Logo + Branding Design / Print + Digitial/ Graphic + Web Designer

    Sweden - Last active: 1 month ago - Tests: 5 - Portfolio: 9

    I love what I do. I feel that I am truly privileged to have the oppourtunity to offer clients design services that come from a passion for design. www.andy-kerr.com I can help you with logo design and branding concepts, promotional products like brochures, catalogues, flyers, booklets, business cards, postcards and invitations as well as website design, web banner ads, illustrations and typography. My background and specialty is primarily print design and I enjoy the opportunity of being involved in a project from the development of a creative concept all the way through to a final polished product. As my client, you can expect reliable customer service and my commitment to you and your project throughout the design process however small or extensive the job might be. Contact me to see how I can help you. note to contractors: I do not do free proposals, concepts or any design work before being hired. thanks, Andy

    $33.33 /hr
    95 hours
    4.94
  9. Bilal Siddiqui

    Bilal Siddiqui

    Java and XML consultant

    Pakistan - Last active: 2 days ago - Tests: 1

    I am an electronics engineer, XML consultant, technology evangelist, and frequently published technical author. After graduating in 1995 from the University of Engineering and Technology, Lahore, I began designing software solutions for industrial control systems. Later, I turned to XML and built web- and WAP-based XML processing tools, server-side parsing solutions, and service applications. Since 2006, I have focused exclusively on Java- and XML-based open source tools and solutions. A strong advocate of open source tools, I not only design solutions based on them but also train software and IT personnel at Lahore universities in using open source technologies. I am the author of JasperReports 3.6 Development Cookbook (Packt Publishing, 2010). Please see my following articles that I've been writing to display my work. Data visualization, Part 1: Visualize browsing metrics with SVG and D3 http://www.ibm.com/developerworks/opensource/library/os-dataviz1/index.html?ca=drs- Data visualization, Part 2: Use D3 component layouts http://www.ibm.com/developerworks/opensource/library/os-dataviz2/index.html Bonita for business process management, Part 1: Configure a simple workflow http://www.ibm.com/developerworks/opensource/library/j-bpm1/index.html Bonita for business process management, Part 2: Configure forms and variables http://www.ibm.com/developerworks/library/j-bpm2/ Integrate social networks into BPM, Part 1: Collect Twitter data http://www.ibm.com/developerworks/library/j-sb1/ Integrate social networks into BPM, Part 2: Add Twitter data to CRM http://www.ibm.com/developerworks/library/j-sb2/ XML Canonicalization http://www.xml.com/pub/a/ws/2002/09/18/c14n.html http://www.xml.com/pub/a/ws/2002/10/09/canonicalization.html Integrating healthcare services, Part 1: Using an Enterprise Service Bus for healthcare https://www.ibm.com/developerworks/java/library/j-hsb1/index.html Integrating healthcare services, Part 2: Using Apache ServiceMix as a Healthcare Service Bus https://www.ibm.com/developerworks/java/library/j-hsb2/ Design XML schemas for enterprise data https://www6.software.ibm.com/developerworks/education/x-schemadata/x-schemadata-a4.pdf Build configurable workflows with WS-BPEL and IoC, Part 2: Developing and hosting BPEL workflows http://www.ibm.com/developerworks/java/library/j-bpel-ioc2/index.html Deploying Web services with WSDL, Part 1: Introduction to Web services and WSDL http://www.ibm.com/developerworks/library/ws-intwsdl/ Securing Java applications with Acegi http://www.ibm.com/developerworks/library/j-acegi1/ Web Services Security, Part 1 http://www.xml.com/pub/a/ws/2003/03/04/security.html Web Services Security, Part 2 http://www.xml.com/pub/a/ws/2003/04/01/security.html Implementing XML Encryption in Java http://www.xml.com/pub/a/ws/2004/04/21/wss4j.html

    $35.00 /hr
    546 hours
    4.96
  10. Dimitar A.

    Dimitar A.

    WordPress Themes & Plugins Developer

    Macedonia - Last active: 1 day ago - Tests: 14 - Portfolio: 20

    I am available and motivated to work on any project involving the WordPress platform, PHP or JavaScript. Have also passed tests like WordPress and PHP with flying colors and hold the 1st place with Bootstrap. Over the past 9 years I have been involved in a wide range of projects - from websites to applications and integrations. These included Wordpress platform, Magento, Zen Cart, Facebook apps, flash-based applications, custom-made web sites, tools or applications made from scratch with PHP, JavaScript, Ajax and Jquery, Cron jobs, GIT, SSL etc. Recently have been working with open-source scripts like Font Awesome, Columnizer, FitVids and others. I have WordPress.org submitted and approved WordPress plugins. I earned the gold medal on oDesk and have passed many other tests like PHP, JavaScript and WordPress with flying colors. I have 1700+ logged hours and 60+ jobs in my work history. I am excited to meet new people, learn new things and work on challenging projects!

    Groups: Bluehost Developers and Designers, Crossrider

    $49.00 /hr
    1,776 hours
    4.77