Top Upwork Freelancers

More options
Clear all filters
  1. Omar T.

    Omar T.

    PHP / Zend framework / CodeIgniter / AJAX / AngularJs / HTML5 / CSS

    Algeria - Last active: 28 days ago - Tests: 5 - Portfolio: 4

    Full time freelance PHP Full Stack Developer with strong knowledge of front-end technologies HTML5,AngularJs, CSS, AJAX and Flex. I'm also familiar with Adobe's design software Fireworks, Photoshop. I provide quality code in record time for you and your business. I want to work on challenging projects that utilizes the latest technologies.

    Groups: Upwork Verified Web Developers

    $33.33 /hr
    1,160 hours
    4.99
  2. Artur Stolear

    Artur Stolear

    Browser Extensions, Chrome Extensions, Firefox Addons, JavaScript

    Moldova - Last active: 1 day ago - Tests: 8

    Front-end developer since 2008, very like to write JavaScript and rich HTML5 applications. My current focus is on Web Apps and escpecially Mobile Web Apps. On my work in Professionali.ru I developed our own JavaScript framework for easier team development. Lot of things was done about performance optimizations and complexity structure of our site which now became Application. Now I am looking for new expirience and interesting projects. * JavaScript (Front-end) lead and JavaScript architechture developer at Professionali.ru (Russian analog of LinkedIn) since February 2012. * Speaker at jQuery Russia conference in October 2013.

    $55.56 /hr
    241 hours
    5.00
  3. Alexey N.

    Alexey N.

    Native iOS development: Swift & Objective-C

    Russia - Last active: 1 day ago - Tests: 4 - Portfolio: 2

    I am a software engineer who loves his job and can be satisfied only when his work is done perfectly and within the timeline. My expertise in building software is supplemented by my education – I have a master’s degree in Math and Computer Science with two retraining courses for professional programmers of total duration over 1000 hours, and I never stop learning new stuff. I have a solid understanding of how to create stable and maintainable software, from small 2D games to complex enterprise applications. Here is a non exhaustive list of what I dealt with so far: # Native iOS applications (Languages: Swift, Objective-C, C) * iOS 8 app extensions: today widget, custom keyboard * Apple Watch app * augmented reality * audio & image processing * location services and maps * complex animations and visual effects * push & local notifications * in-app purchases * integrated ads & analytics * cocos2d game engine * security of data transfer and storage * interoperation with server over HTTPS, TCP and FTP # Applied and low level programming for UNIX (Languages: C, Shell) * daemons * shell scripts * UNIX signals * POSIX threads and synchronization # Applied and low level programming for Windows (Languages: C++) * Inter-process communication with global events * Global keyboard hooks * File mapping * Double buffered drawing * GUI apps with MFC * Kernel objects for thread synchronization and inter-process communication # Parallel computations on GPU with CUDA (Languages: CUDA C/C++) * Ray tracing * Static image processing # Web front-end development (Languages: Java, JavaScript, HTML) * Java applets * Page-proofs Besides being a developer, I enjoy sharing my programming experience with students at state university in my city, where I work part time as a lecturer.

    $30.00 /hr
    1,235 hours
    5.00
  4. Alexander Golubyatnikov

    Alexander Golubyatnikov

    Expert Magento Developer

    Ukraine - Last active: 1 day ago - Tests: 5 - Portfolio: 21

    Hi everyone. My name is Alex. I'm senior php developer. I have over than 8 years of experience in design & development of commercial market data, magento ecommerce web sites, analytics solutions, social networks etc. Have a strong background in data architecture, data management and financial data warehousing. Very experienced in building robust, scalable, optimized web applications. I was one of the developers who developed core for huge projects. Worked with zend, yii, cake, magento frameworks and others interesting things use Zend coding style. So, if you you are looking for good developer with value for money just tell me! :)

    $55.56 /hr
    2,267 hours
    4.99
  5. Bilal Siddiqui

    Bilal Siddiqui

    Java and XML consultant

    Pakistan - Last active: 1 day 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
    529 hours
    4.96
  6. Md abdul muqit Z.

    Md abdul muqit Z.

    GIS/Remotesensing/Photogrammetry/Maping/Area Planning/Google Maps

    Bangladesh - Last active: 1 day ago - Tests: 2 - Portfolio: 6

    Consultant and expert in GIS and Remote Sensing with particular interest in spatial analysis, Mapping with ArcGIS, Landuse planning and Landcover analysis with Erdas Imagine, Satellite Image analysis, rectification, Geo-refferencing & Mosaicing, Contour DEM preparation, GIS application development, spatial database design, and modeling. Over 8 years of experience in the field of Geo-information Science & Earth Observation related to environment, land management, telecommunication, spatial and relational database design-development-management, analysis, monitoring and planning etc. I have strong expertise in Small & Large Area, both residential and commercial, Planning by AutoCAD Map 3D and ArcGIS, also expertise on Google Maps. During my professional period I have worked for Government, Non government, Multinational, and International organizations. I have expertise in ESRI (Desktop, Multiuser Geodatabase, Server), ERDAS (Imagine with all modules), AtuoCAD Map 3D, SAP and Oracle. My prime expertise is in both Spatial and Non-Spatial Database Management System. During working with many national, international and private organizations I was involved to teach GIS and Remote Sensing courses as a part of capacity building program to the organizations like SRDI (Soil Resource Development Institute), Voovis Informatics etc.

    $34.00 /hr
    328 hours
    4.83
  7. Valentyn Kuznietsov

    Valentyn Kuznietsov

    iOS Developer Programmer, Objective-C, Swift, iOS

    Russia - Last active: 1 day ago - Tests: 4 - Portfolio: 15

    Ambitious and hard-working Software Developer with a strong technical background. I’m not afraid of any kind of challenging tasks. Full cycle of an iOS app development, architecture design, issues fixing, updating existing apps, submitting to App Store and support. More than 120 releases: sport applications, utilities, cross-platform development (WinPhone, Android) EXPERIENCE iOS Software Developer, Guernsey Network Lp, Ukraine 2014- Present iOS Software Developer, DEXWELL TECHNOLOGY LLP, Ukraine — 2008-2014 SKILLS • Strong mathematical background, analytical and problem solving skills • Good knowledge of Objective C-, more than 6 years of developing iOS mobile applications • Some knowledge of SWIFT • Some knowledge of SQL • Some knowledge of C#, Java • Some knowledge of PHP, JavaScript, XML, HTML, CSS • SVN, GIT

    $35.00 /hr
    347 hours
    5.00
  8. Lisa H.

    Lisa H.

    Corporate, Marketing & Social Media Writer

    Canada - Last active: 1 day ago - Tests: 7 - Portfolio: 5

    Quick, efficient, creative, organized - these are just a few of the words that describe me as a freelance writer. Dedicated to providing quality content geared to your audience, I am experienced in corporate, marketing and social media content. Crafting the quality content you want and providing a finished draft on time are my first priority. Deadlines and criticisms are no obstacle. See my portfolio for examples of work.

    $33.33 /hr
    430 hours
    5.00
  9. Saul H.

    Saul H.

    Java/C++/.Net Software Engineer/developer/integrator/consultant

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

    Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices, materials management, promotions, etc. Algorithms and programming skills, strong knowledge of C/C++ and Java. Strong knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, Algorithms for graphs, dynamic programming and computational geometry. Accounting area, experience in handling all movement of materials between stores and shops, all the accounting related to its retail. Point of sale Area, experience with integration between POS software and label printers, fiscal printers, barcode readers, fingerprinter and keyboards for point of sale. Oriented Object Programming and Low-level: exprienced in Java and C/C++/C#. QT libraries and Visual Basic. Scientific Programming: Matlab. IDES: Intellij Idea, Eclipse, Netbeans, Kile, Quanta. Servers: Apache-Tomcat. Functional Programming and AI: Haskell and Prolog. Database: MySql Oracle, Postgres, SQL Server and FoxPro. Web Development/Frameworks: Php, Struts, Vaadin, ZK, html and css.

    $30.00 /hr
    1,457 hours
    5.00
  10. Anna R.

    Anna R.

    iOS/Android/Web Expert

    Bulgaria - Last active: 1 day ago - Tests: 7

    Hi, Over the last 5+ years, I have developed a wide range of iOS/Android applications, Social Networking Apps, Google Map Apps, Photo / Video Sharing Apps, Dating Apps, Taxi App, Restaurant delivery Apps, File uploading Apps, Chat Apps, Health/Fitness Apps, Business Apps, Travel Apps and so on. I'm aiming at building highest quality apps which should be more competitive than others in the market. Equipped with most up-to-date technologies and always keep a sharp eye on the trends of markets. I am very familiar with the Programming Languages/IDEs such as Objective-C, Java, C/C++, HTML, XCode, Eclipse, Android Studio and more. I have rich experience in Parse.com and AWS and more as well as Parsing JOSN, XML. I have also enough experiences in 3rd Party APIs like Facebook API, Twitter API, Instagram API and more. I have also developed many websites using HTML5, CSS3, PHP, and MySQL for small businesses and startup companies. Thanks. Anna.

    $33.33 /hr
    52 hours
    5.00