Top Upwork Freelancers

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  1. Andy D.

    Andy D.

    Algorithm Scientist - Machine Learning, Computer Vision, Analytics

    United States - Last active: 20 hours ago - Tests: 1

    For managers in companies who have a complex manual process in need of automation. I am an algorithm scientist with Masters Degree in Signal Processing from Purdue University, and a penchant for outside-the-box thinking. I offer innovative algorithm designed to solve challenging and costly problems. I have over eight years experience designing algorithms, and pull from a rich background of skills and knowledge including: Machine Learning, Computer Vision, Image Processing, Genetic Algorithms, Neural Networks, K-Means Clustering, Support Vector Machines,Time Series Analysis, Fourier Analysis,Regression, System Design and Modeling, Linux System Administration, Website Data Extraction, Statistical Analysis, Predictive Analytics, Matlab Modeling, and C/C++ Programming. Unlike other algorithm scientists, I have leadership and communication skills that can be leveraged to help guide teams of developers to implement customer-facing or real-time versions of the solutions provided.

    $60.00 /hr
    135 hours
    5.00
  2. Andrey Germanov

    Andrey Germanov

    GNU/Linux all-round developer and integrator

    Russia - Last active: 20 hours ago - Tests: 5 - Portfolio: 18

    I OFFER: 1. Development of new web applications and services 2. Improvement, refactoring and support of existing web applications and services 3. Integration of web applications to services: payment gateways, cryptocurrency services, social networks, authorisation and identification services, various databases, phone providers, etc using REST/JSON APIs. 4. Setup, install, support web applications and services on GNU/Linux based servers (real or virtual, as Amazon, Rackspace, CloudSigma). Integrate webservices to different client-server network infrastructures with databases, communication and collaboration tools. Setup secure Virtual Private Networks, data migration, replication and synchronisation. Fix different issues during support. I HAVE: 1. More then 15 years of experience in fields, described above. This experience resulted in invention of Client/Server integrated framework, which was developed from scratch (including all interface libraries, as an integrated window manager and event-driven subsystem). Also 2 patents were registered during this development. 2. Linux Professional Institute Certification (all 3 levels). 3. Zend Certified PHP Engineer certification. 4. Oracle Java Certified Associate Certification. 5. More than 40 less important certifications, related to various technologies. 6. Strong knowledge and practical experience in following fields: - Backend: PHP, Python, Java, HTTP (and this is not only words about HTTP, I developed portable HTTPS webserver and HTTP Proxy server). - Frontend: HTML, HTML5, CSS, XML (DOM, XSL, XPath, XML-based document formats: OpenXML XLSX, OpenDocument ODT), JavaScript (Jquery, Prototype.js, Bootstrap, ExtJS, Angular.js), AJAX/JSON. - Mobile and embedded development: PhoneGap (Apache Cordova), Android Development Tools, JQuery Mobile. Develop iOS applications using XCode. - Databases: Memcached, MySQL, PostgreSQL, SQLite, IBM DB2, MongoDB, InfluxDB, including stored procedure and function programming, triggers and one/multi-master replication. - Frameworks: Phalcon, Kohana, Yii, Yii2, CodeIgniter, Laravel - ERP and CRM systems with web-interface: SalesForce, SugarCRM, Less Annoying CRM, integration with R3 SAP. - Various REST web-services: - Payment gateways: PayPal, INTERAC (Debitway,Moneris eSelect), Authorize net; - Authentication, Identity verification and fraud prevention: miiCard, MaxMind, Telesign, IdentityMind, Jumio NetVerify, 2 Factor Authentication (Google Authenticator, Authy); - Phone and SMS Gateways: Twilio, MRIM; - Financial Services: Yahoo Finance, RBC; - Remote storage: GoogleDrive, YandexDisk, BOX, DropBox; - Geolocation services: Google Maps, Google Maps autocomplete, GeoIP; - Social networks: Facebook, LinkedIn; - CryptoCurrency services: BlockChain, CoinBase, BitStamp, bitcoind - Google Apps (Google Documents, Google Sheets) - Mail servers and services: Postfix, Dovecot, Exim, Zimbra Collaboration Server, Mailchimp integration. - Spam prevention services: reCaptcha, funCaptcha, Securimage (and many other captchas), Askimet. Mail spam and intelligent processing: Mailscanner/Amavis+SpamAssassin, Cisco Reputation Mail spam Filtering Technologies (derived from IronPort, based on senderbase.org reputation network). - Server side: Everything related to my Linux Certifications and more. All my projects and sites hosted on my own physical servers, connected to secure VPN network. - Web servers: Apache, Nginx, Lighttpd - Collaboration tools: Git, GitHub, BitBucket, GitLab, BaseCamp, Trello, JIRA, Slack - Also, maybe I forgot something. Ask me, probably I know this too. I AM INTERESTED IN: 1. Long term relationships 2. Learning new things 3. Interesting tasks and projects I AM NOT INTERESTED IN: 1. Web-site layout and design tasks 2. Design themes and templates 3. Install, deploy and support any proprietary/patented software with any licensing limits. *** My oDesk profile and portfolio will show you the rest.

    $44.44 /hr
    2,657 hours
    4.96
  3. Dmitry Artamoshkin

    Dmitry Artamoshkin

    Browser extensions expert (Chrome, Firefox)

    Russia - Last active: 20 hours ago - Tests: 6 - Portfolio: 7

    Current areas of interest: Browser extensions, plugins, bookmarklets and etc. Developed dozens browser extensions for Chrome and Firefox browsers for clients and for personal use. I've gained rich experience in Ebay API, Google Drive API, VK API, online dictionaries, html5 video and a lot of other APIs and technologies. And I'm always ready to master something new. Page modifications, script injections, toolbars, popups, mashups, API integration, user action automation - that's my job and I really like it! Also I have strong web-development background and I have got rich experience in: - Perl, PHP, HTML, CSS, Javascript, jQuery, AJAX, MySQL - Yii, Wordpress, Joomla - Adobe Photoshop, Adobe Illustrator. Master's Degree in Computer Science. Have 7+ years of experience in IT Industry. I'm looking for the opportunity to utilize my varied skills in full-time or part-time work.

    $35.00 /hr
    658 hours
    5.00
  4. Andrea Catasti

    Andrea Catasti

    International Tax, Contract and Corporate Lawyer

    France - Last active: 20 hours ago - Tests: 5

    I'm an International Business lawyer who specializes in International Tax, Contract and Corporate Law. My activity on oDesk focuses on providing individuals and companies with comprehensive legal and tax advice on the issues which arise from their day-to-day business activity. The core of my activity may be summed up as follows: 1) assisting individuals and companies in structuring their international business transactions (e.g. cross-boarder Purchase and Sale Agreements, Profit Repatriations, Company Reorganizations,Divestitures and Dissolutions) from a tax-efficient standpoint. This involves the assessment of the likely tax consequences of cross-boarder operations according to EU Tax Law and the International Double-Taxation Agreements. 2) drafting, reviewing and amending international business contracts (e.g. Purchase and Sale Agreements, Employment Contracts, Operating Agreements, Partnership Agreements, Services Contracts) with a particular focus on the tax optimization. 3) doing legal research on International Tax Law, US Tax Law, European Union Tax Law, French Tax Law and Italian Tax Law. I've authored various working papers and articles on different International Tax issues like double taxation within the EU as well as a comparative outlook of the German and the Italian Tax systems.

    $75.00 /hr
    497 hours
    4.97
  5. Ali Asif

    Ali Asif

    Web development Agency

    Pakistan - Last active: 3 days ago - Tests: 1 - Portfolio: 5

    AAlogics is a premier web development firm providing solutions to clients across the world. We live and breathe the web. What makes us distinctive is our ability to assist clients and meet challenges. Each project is taken up as an important assignment and each client is given top priority. Our work philosophy is simple - deliver quality & value within a fun, disciplined, and a receptive work environment that promotes unity and fortify the strength of the company.

    $34.00 /hr
    921 hours
    5.00
  6. Isabelle Allard

    Isabelle Allard

    Experienced Webmaster/Web editor/writer/Copywriter/Proofreader/

    Sweden - Last active: 20 hours ago - Tests: 6 - Portfolio: 3

    I am French (bilingual italian) and I have been living in Sweden since 2011. I am currently looking for a position corresponding to my experience either as a Writer/ Webmaster/Copywriter/Proofreader or translator /SEO translator (ideally working from home). After an extensive period of training (in Languages, Literature and Multimedia), I have been working for the last 15 years in the Web sector where I held several different positions (webmaster/web editor/writer/proofreader/copywriter). Over the years, I had to face the permanent challenge of adapting my work to ever changing demands from clients while staying as close as possible to the fast-moving requirements of the media sector. This challenge gave me the opportunity to develop and deepen my skills further allowing me to match as closely as possible the ever demanding needs of the sector. Thus, my skills have become over time more technical and graphic-oriented, although the text itself has remained at the core of my work. A genuine sensitivy for literary work - and more generally literature - meant that my professional work has always been guided by a true concern for rigour and conciseness. Finally, I had throughout my life the opportunity to live in different countries and to evolve in various cultural environments. This gave me an ability to adapt quickly to people as well as circumstances and to develop the open-mindedness required in today’s multicultural world.

    $33.33 /hr
    1,107 hours
    4.79
  7. Volodymyr Prokopchuk

    Volodymyr Prokopchuk

    Magento Certified Developer

    Ukraine - Last active: 20 hours ago - Tests: 5 - Portfolio: 11

    Hello. Over the last 8 years I have developed number of websites using PHP , MYSQL, Ajax, Jquery, HTML5, CSS3 for my clients from all over the world mostly from Europe and America and contributed significantly in achieving their personal/business objectives with these websites. I posses a solid experience in different PHP frameworks like Magento, Code iginiter, cake PHP, YII and I have also worked with smarty and other templating engines. My aim is to provide best services on competitive rates and help my customers in achieving their goals. Best regards

    $35.00 /hr
    842 hours
    5.00
  8. Preston H.

    Preston H.

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

    United States - Last active: 20 hours ago - Tests: 48 - Portfolio: 4

    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?

    $81.00 /hr
    457 hours
    4.99
  9. Bilal Siddiqui

    Bilal Siddiqui

    Java and XML consultant

    Pakistan - Last active: 1 day ago - Tests: 1 - Portfolio: 3

    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. Carl Wittig

    Carl Wittig

    Audio Production / 3D Cad Design

    United States - Last active: 5 days ago - Tests: 6 - Portfolio: 8

    My Objective Is To Take Your Idea And Help You Bring Your Project To Life Through The Use Of Technology. I Have Been Working With Audio For 5 Years And Have Several Commercial CD & DVD Projects To My Credit. I Have Been Doing Mechanical Engineering For the Last 13 Years In The Product Display Field. The Display Field Has Also Brought Me Into The World Of Graphics. My Core Skill Set With Computer Based Tools And Years Of Bringing All Types Of Projects Together, Gives Me The Ability To Help Guide Your Project With Technical Advise & Production Skills From Inception To Completion.

    $31.11 /hr
    243 hours
    5.00