Top Upwork Freelancers

Clear all filters
  1. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - Last active: 1 month ago - Tests: 3

    Over 8 years hands-on experience. I have deep knowledge on VoIP Hardware and softswitches from open-source one (Asterisk, Elastix, Askozia, Freepbx, CallBox, Trixbox, Welltime, Yeastar) to licensed (Switchvox, Panasonic, Mera, RTU) . I am providing Asterisk-based PBX installation\integration, support, troubleshooting and consultations. Fully manage the installation, configuration and troubleshooting of Linux servers * Install and configure Web Servers and MySQL, PostgreSQL * Install and configure customer scripts and programs * Monitor performance to identify and resolve issues using a suite of systems and tools. * Provide VoIP Security * Troubleshoot and resolve network, system, hardware and software problems. * Achieve quick fixes and / or long-term solutions as needed. I have more than 100 successful IP-PBX server deployments, so I am confident that you will be satisfied with my work completely.

    $20.00 /hr
    0 hours
    0.00
  2. Rahul W.

    Rahul W.

    Consultant

    India - Last active: 7 days ago - Portfolio: 2

    Almost 5 Years of proven working experience of J2EE Related Projects and Currently working on ERP workflow application using JSF, ICE Faces with Hyperion Integration . Web Frameworks, Servers and Tools: - Struts MVC, Spring , Log4J, Axis Web Service, SOLR , Jason Objects Persistence Layer and O/R Mapping Tools : -Hibernate3.0+JPA (Java Persistence API), JDBC Application Presentation Layer: -Struts Tags, JSP, ICE Faces, JSF Ajax Framework:-ZK Framework,ZK MVC,ZK MVVM, DWR frame work. Application Server : - Weblogic 9.2, Jboss, Glassfish, Tomcat 6.0

    $11.11 /hr
    0 hours
    0.00
  3. Sergey Karatkevich

    Sergey Karatkevich

    DevOps

    Cyprus - Last active: 1 month ago - Tests: 8

    My key principles: * Simplicity - just describe you problem. I will offer you a solutions and your problem will be fixed. * Flexibility - flexible prices, work hours and contract terms. Each client is special. Onsite works welcome! * Scale and growth - I glad to help you grow up from a small project to the international business on several continents, step by step. * Trust and success - lot of clients trust me already and their business is successful. I sure I can help you too!

    $15.56 /hr
    0 hours
    0.00
  4. Denis Grabok

    Denis Grabok

    Java EE/Oracle DB/Python programmer

    Russia - Last active: 2 days ago

    Hi, My name is Denis Grabok. I believe my strong points are Strong Professional Knowledge, Creativeness and Punctuality. My #1 goal will always be to meet your needs and deadline. When working on a new project, I like to speak with the client, so that I can have a clear understanding of his/her needs and vision of the project. I'm honest and fair. Since 2010, I'm programmer in Mobile TeleSystems OJSC for the development of the main billing systems in company. Developing UI and server (big data, cluster programming, high load). Also from 2011, I develop Java EE applications. Thank you in advance for your time and consideration. I look forward to working with you soon. I have a Master in Quantum and Optical electronics from Far Eastern Federal University, in the Russia. Listed below are my experience and skills. — Java Core: Java Core, Multithreading, Collections API, etc; — Java EE: Servlet, JSP, JSF, EJB, JPA, CDI, JASPI(C), JAX-WS, JAX-RS — Oracle SQL/PLSQL — Python & Django framework — JavaScript, JQuery, AngularJS (more than 2 year) — Core web: XML, JSON, HTML/CSS; — OS: Linux, Windows, Mac OS X; — VCS: Git, SVN; — UML.

    $10.00 /hr
    0 hours
    0.00
  5. Carlos Cerrato Estrada

    Carlos Cerrato Estrada

    Web Developer

    Costa Rica - Last active: 5 days ago - Tests: 1

    Web Development: Web Front End Development with jQuery, Angular, React.js and Bootstrap. Backend with Node.js on linux and .Net on Windows Server SharePoint Expert: Expert SharePoint solutions developer with workflows, web parts, user controls, custom master pages, page layouts, custom web services, SharePoint 2013 applications and more. .Net C#, MVC Applications, WCF Services, Web API, PowerShell Scripts, Linq, Entity Framework Business Intelligence: SQL Server Integration Services Packages, Reporting Services Reports, PowerPivot, PerformancePoint and Excel Dashboards. Project Lead: Software development for Ministry of Finance of Honduras. Business Intelligence platform implementation for Ficohsa Bank Honduras

    $20.00 /hr
    4 hours
    0.00
  6. Saeed ahmed D.

    Saeed ahmed D.

    An Expert C++, Java, SQL, Unix Developer

    India - Last active: 8 days ago - Tests: 2

    To become an expert in cutting edge technologies by means of imparting and implementing them. An experienced Freelance Online Or On-site Developer which is quick learner looking For: 1> Application Designing, Developing, Code Review Jobs. 2> Tier-2, Tier-3 Support for Debugging and Maintaining of any C++, C#, Java, Unix based applications, could be any Products or Projects.

    $44.44 /hr
    0 hours
    0.00
  7. Igor Drankin

    Igor Drankin

    Web developer

    Russia - Last active: 1 month ago - Tests: 4

    I have solid 2+ yrs of web development experience using Ruby on Rails. I have worked hundreds of hours out side odesk on multiple domains. I can do anything related to rails. I am working in rails from 2012 and worked on high traffic websites and variety of domains like finance, banking and gas... I have necessary experience in web programming. Like Ruby on Rails, HAML, AJAX, JavaScript, etc.

    $40.00 /hr
    0 hours
    0.00
  8. Vitaly Tuev

    Vitaly Tuev

    Project manager

    Russia - Last active: 18 days ago - Tests: 8

    I have over seven years of business experience managing business integration projects. I managed the different complex projects for world-famous companies, like Wrigley's, Ford, Kraft Foods and Heinz. My core competency lies in managing projects with ERP systems integration, customer customization and software development. I also have good experience in the following areas: Java EE Databases (MySQL, PostgreSQL, SQlite) BPMN (Apache Activity) ECM systems XML,Web-services, Continious integration Full resume http://tuev.pro/me/

    $16.67 /hr
    0 hours
    0.00
  9. Martin S.

    Martin S.

    VoiP

    Spain - Last active: 1 month ago - Tests: 1 - Portfolio: 1

    Hi, I´m a telecom entrepreneur and active in VoiP/SIP on a global scale. Since 1996 i`m into IT and have a broad knowledge of many techniques. Because of my global understanding i do not need to know every detail to be able to provide the best solutions. Im a strong conceptual thinker, I have an extensive network of experts available (i use them myself). So if u have a problem or project, i can have that arranged for you. Me and my team do anything telecom or VoiP, we are experts in Hosted VoiP and SIP troubleshooting. But we can help u with anything u may need, including development of apps, websites and IT problem solution. We are managing three Kazoo clusters and developing whapps for them. I am very busy, but its nice to have other projects in the course of a year next to your own. They keep you sharp, takes your mind of your specific tasks and are fun, most of the time.

    $66.00 /hr
    0 hours
    0.00
  10. Ruslan Aksenov

    Ruslan Aksenov

    Web and SharePoint Developer with 4 years of experience

    Russia - Last active: 19 days ago - Tests: 4 - Portfolio: 6

    Good day =) I'm a highly skilled professional with 4 years of Web Development in total including ASP.NET (+MVC) and SharePoint. Have worked on 7 different large scaled projects so far including: The enterprise portals for - The biggest Russian Media Company VGTRK - Life Assistance Services Enterprise Portal - XFIT Enterprise Portal - PIONEER GROUP Enterprise Portal - BIN Insurance Enterprise Portal A BnB website on ASP.NET MVC technology (was developing it nearly 3 years ago during my university years) - http://arendadirect.ru/

    $14.00 /hr
    0 hours
    0.00