Top Upwork Freelancers

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  1. Martin Calabria

    Martin Calabria

    Software Engineer

    Uruguay - Last active: 27 days ago - Tests: 11

    Hello everyone! I am an enthusiastic person who likes new challenges. I graduated as a software engineer and I've been developing web systems for over seven years using .net, java, and php frameworks. My main strengths are commitment, loyalty and self-learning skills. I hope to work hard here to get new achievements and keep improving my skills.

    $22.22 /hr
    1,010 hours
    5.00
  2. Mauricio Offermann Palma

    Mauricio Offermann Palma

    Computer Engineer

    Chile - Last active: 3 days ago - Tests: 2

    I'm a Computer Engineer , during my career I have worked managing , designing and developing custom web applications for clients of different nature and in many different languages, but definitely my biggest strength is Salesforce APEX. My experience divided into three areas: Project Management We perform planning activities in the short term , while maintaining excellent communication with the customer , give daily reports on the progress of the project which include the activities performed, the problems encountered and the proposed solutions . Application Design Often the technical details make a big difference in implementation , which is why I worry about guiding the client presenting the best solution strategies , considering important issues such as security of information, the application performance , use of resources , the way they behave in the future scenarios with massive data loads or increased volumes of information. Software Development I believe that application development is my strongest skill have much experience in various languages ​​such as Java, C # or Ruby , mainly oriented web solutions , management naturally javascript ( including jQuery ) , CSS , JSP , HTML . Have special ability to manage MySQL , PostgreSQL , SQL Server and more databases. However, the last 7 years I have specialized in developing applications on the Salesforce CRM . These applications include design , process automation , configuration , workflows , validation rules , triggers, Visualforce pages, Apex classes and components . In addition to integrations with other systems using webservices and bulk batch .

    $40.00 /hr
    1,355 hours
    5.00
  3. Krastyo K.

    Krastyo K.

    Java/SQL/C++/C# Developer

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

    I have more than 15 years experience of Web and Desktop programming, using variety of technologies - web programming using Java or ASP.NET, JQuery, Ajax, HTML, CSS; SQL databases; different tools, services and applications with C++/C#. During my work carrier I have been involved in many projects, focused in various fields of interests - database driven web sites and applications, Windows desktop applications, CAD/CAM systems, MS-Office automation applications, device control systems, large database support applications.

    $20.00 /hr
    1,348 hours
    5.00
  4. Saul H.

    Saul H.

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

    Venezuela - Last active: 8 days 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
    1,756 hours
    5.00
  5. ZhouChe Lin

    ZhouChe Lin

    Top iOS / Android Developer

    Singapore - Last active: 3 days ago - Tests: 4 - Portfolio: 4

    *2000+ Hours Veteran on Upwork* * Member of exclusive TOP RATED mobile developers group* I'm proudly saying I am the one of best developers in the fields of iphone / android mobile applications and games. I am very strong at Objective C, SWIFT, Java, Phonegap / Xamarin, PHP / Javascript, NodeJS. I have rich experience in social applications for mobile devices, geo-location service, real-time messaging, Parse framework, Crashlystics, mobile games using cocos2D, cocos2dx, Unity3D. I have developed 10+ social applications, mobile games, POS applications for certain companies, emergency-purpose applications, shopping & lifestyle applications with In-App payment features. I have almost all sorts of devices including iPhone 4s, 5s, 5c, 6 Plus, iPad Air, iPad 3, iPad mini, Google Nexus, Samsung Galaxy S5, S4, HTC One. I always pursue long-term relationship with great clients. I am happy to help you here. Imagine what nobody knows, Make it everybody can see. Just do it with me, and enjoy the Power of Idea. Best, Zhouche Lin.

    Groups: Application Developers Alliance

    $48.89 /hr
    2,124 hours
    5.00
  6. Douglas Spence

    Douglas Spence

    Skilled UK Developer - T-SQL, C#, VB, Delphi, OOP

    United Kingdom - Last active: 15 days ago - Tests: 9

    I recently bought a sailing yacht and would like to be able to travel and earn a living at the same time. I am very motivated to achieve this through online freelancing.I have extremely strong technical skills and always enjoy being challenged to expand my knowledge and develop those skills further. I started programming 16 years ago when I was 14 and knew immediately it would be my future career.

    $27.78 /hr
    4,739 hours
    5.00
  7. Diaa Sami

    Diaa Sami

    Professional C++ Developer, Software Engineer, Computer Wizard

    Egypt - Last active: 3 days ago - Tests: 18 - Portfolio: 9

    I am an ambitious and established software developer who started development in highschool, I'm fond of graphics and interactive applications in general and the open-source philosophy. I have used several programming languages, frameworks and APIs, including but not limited to C/C++, .NET, Java and Python, wxWidgets, OpenGL, Win32, COM and sockets, I've programmed for several platforms ranging from hand-held devices to Desktops(Windows and Linux) and client-server applications. I'm always interested in challenging jobs.

    $27.78 /hr
    2,086 hours
    4.99
  8. Rameshwar Saran

    Rameshwar Saran

    Software Architect and Developer

    India - Last active: 2 days ago - Tests: 1 - Portfolio: 2

    Recent Past Experiences: 40 Years experience as Software Architect with Phoenix Technologies Ltd., Software Architect with GuardianEdge - Symantec and Software Architect with TriCipher - VMWare, and TransAuth Inc. etc. Languages: Objective-C, Java, C, C++, C#, VB.NET, ASP.NET, VB, VBA, PHP, Perl, Python, SQL, Assembly, RealBASIC, Power Basic, HTML, CSS, JavaScript, AJAX, XML, WordPress, Flash ActionScript and more... Databases: MySQL, Microsoft SQL Server, Oracle, DB2, PostgreSQL. Platforms: Windows, OS X, Linux, Android, iOS Types of Programs: Desktop and Client-Server Applications, Systems and Windows Internals, Digital Signature Solutions, Identity and Access Management, Bluetooth and Wireless, Cryptography, USB and Smart Card Tokens, Web Applications, and Mobile Applications.

    $55.56 /hr
    373 hours
    5.00
  9. Gary G.

    Gary G.

    Web Development / Java / JSF / PrimeFaces / Lotus XPages Notes Domino

    United States - Last active: 3 days ago - Tests: 1 - Portfolio: 1

    I have over 15 years of development and implementation experience on projects ranging from small departmental applications through complex enterprise solutions in multi-national corporate environments. My software and application expertise is very diverse and includes Java, Java EE, JSF, JSP/Servlets, and related frameworks and APIs including Spring, Hibernate, EclipseLink, JBoss Seam, RESTful Web Services, PrimeFaces, Lotus Notes & Domino, XPages, Visual Basic, and Crystal Reports. My relational database expertise includes MySQL, Microsoft SQL Server, Oracle, and PostgreSQL. Beyond application development, I am skilled in high-level requirements gathering, risk analysis, technical design analysis, application modeling, implementation planning, and support. Please allow me to provide you with not only expert technical skills but the knowledge and experience I have gained delivering a broad range of business solutions such as CRM, Change & Problem Management, Incident Management, Help Desk, Health Care, Human Resources, as some examples.

    $50.00 /hr
    1,414 hours
    5.00
  10. abeer Mostafa

    abeer Mostafa

    SW Expert, Professional Project Manager, Technical consultant

    Egypt - Last active: 9 days ago - Tests: 2

    Seeking new challenges in management by which I can effectively utilize my managerial skills as a PMP certified as well as my 13 years working experiences in the Information Technology field, To gain more experience and professionalism in management in different managerial areas as the project scope management, schedule, budget, quality and change control, and to contribute gaining more experience towards the qualitative enhancement of my organization

    $33.33 /hr
    1,260 hours
    5.00