Top Upwork Freelancers

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  1. Sergey Maznichenko

    System architect

    Russia - Tests: 1

    Specializing in enterprise systems and system integration. There are a lot of experience in analyzing existing IT infrastructures, as well as upgrade and optimize it, according to the analysis. A short list of vendors whose products I normally use in the projects: IBM, NetApp, VMware, Microsoft and opensource software for OS Linux, AIX, FreeBSD.

    $44.44 /hr
    0 hours
    5.00
  2. Dale Clay

    Dale Clay

    Back-Office System Consultant

    United States - Tests: 2 - Portfolio: 2

    Experienced business and technology consultant specializing in implementing back-office solutions for small to medium-size businesses. Can quickly grasp existing workflow architecture, interpret business requirements, and redesign processes to be more efficient and user-friendly. Successfully implemented CRM systems, support and ticketing systems, logistics systems, and comprehensive HR management systems. I am dilligent, responsive and thorough. Please consider enlisting my help to address your company's back-office needs.

    $110.00 /hr
    15 hours
    0.00
  3. Prasanna Kumara Welegedara

    Prasanna Kumara Welegedara

    Mr

    Sri Lanka - Tests: 1

    I am worked as Senior Programmer/Project Leader and My Primary Responsibilities at OpenArc is to Analyses, Design and Develop, the Application Software Assigned. In addition, maintain the records pertaining to project management tasks according to company’s quality management systems (QMS) also responsible for meeting with project deadlines and customer loyalty. I have good knowledge of using JSE and JEE , HMTL, DHTML, JAVA, JSP JSF, Servlet, Struts, JPA, Hibernate, Spring, PHP, CakePHP , Joomla, MySQL .

    $11.11 /hr
    338 hours
    0.00
  4. GABRIEL MEDRANO

    GABRIEL MEDRANO

    VMware Systems Engineer

    United States

    • Design and administration of VMware vSphere 4 & 5 Enterprise Plus hosting 1000+ Linux and Windows virtual machines on hosts across multiple sites • Design and configure VMware vSphere 5 components such as High Availability (HA), Distributed Resource Scheduler (DRS), vMotion, Distributed Virtual Switch (DVS), Host Profiles, Storage I/O Control (SIOC) and Network I/O Control (NIOC) • Design and administration of Lab Manager 4.x to support 400+ virtual machines • Understanding of SAN architecture and implementation as it relates to virtualization (NetApp, IBM XIV, EMC Clariion and VMAX) • Design and Administration of 25+ HP C7000 blade chassis, Virtual Connect Flex-10 configuration in support of Linux, Windows, and VMware blades • Citrix XenApp 5 & 6.5 (Windows 2003/2008) administration hosting 90+ applications utilizing Web Interface , Netscaler, and SQL datastore backend for internal and external customers • Design and Administration of Citrix XenDesktop 5.5 integrated with XenApp, Netscaler, and Access Gateway • Citrix farm consolidation and decommission • Create and manage Active Directory and Group Policy Objects to include DNS • All manners of Windows 2003 and 2008 Windows Server administration • Produce processes and procedures for system administration • Troubleshoot and resolve utilizing analytical skill set amongst a distributed and complex environment to include DNS, Firewall, Active Directory, SMTP, TCP/IP, and various network related issues • Excellent communications skills and rapport with fellow teammates. Ability to work as a team or independently

    $88.89 /hr
    153 hours
    0.00
  5. Alfred A.

    IT consultant

    United States - Tests: 1

    Over the last 10 years, I have worked as a Unix administrator for wireless industries. My expertise also includes mobile telephone switches ( CDMA ). I have also developed a wide range of websites using HMTL, DHTML, PHP, and MySQL. I also have experience as a software tester.

    $25.56 /hr
    0 hours
    5.00
  6. Cristian Santiago

    Cristian Santiago

    Infrastructure Administrator(esp. Windows) and Expert Problem Solver

    United States - Tests: 3

    I have been working on IT for almost 15 years now. I am a generalist, a problem solver. I have more experience on Windows Infrastructure but I do also get along pretty well with Unix environments. I have worked for Microsoft Enterprise Support, then continued working as infrastructure administrator for other companies. I have experience in different kinds of Technology and even if I don't have, I can pick it up really quick, my mind seems to be wired up that way.

    $22.22 /hr
    0 hours
    0.00
  7. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - 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
  8. Iris O.

    Iris O.

    Writer, Blogger, Editor, Proofreader

    United States - Tests: 3 - Portfolio: 1

    I am a natural-born writer published as a poet, essayist, and short story writer in several publications. Along with general writing skills I am an accomplished proofreader and editor with a specialty in fiction writing and academic essays. As an avid and voracious reader, I am an excellent candidate for editing, proofreading, and writing novels and manuscripts. I am not only a fast reader and writer but also a proficient grammarian. I read and edit quickly and accurately, and strive to create clarity and cohesion in every work I edit and write. As a novelist myself, I am well-aware of the importance of conveying a clear message while also retaining passion and love. I can provide writing samples on request. I served as both the Web and Entertainment Editor for King's College's newspaper The Crown, in addition to acting as Head Dramaturg for the King's College Theatre Department. I served as an English teacher's assistant for 7+ years at a small prep school.

    $11.11 /hr
    0 hours
    0.00