Top Upwork Freelancers

More options
Clear all filters
  1. Aaron Summers

    Aaron Summers

    Linux Cloud Engineer / 14 Years Real World Experience

    United States - Last active: 18 hours ago - Tests: 7 - Portfolio: 2

    Daily engineering and administration of OpenBSD, FreeBSD, Linux and Windows based operating environments. LAN/WAN: Experience identifying a large number of network and host based security problems. Stabilized the bandwidth billing system for accuracy and provided assistance to the web development team. UNX(tm)/Linux/BSD: Designed and built a custom Enterprises Data Ware House utilizing RedHat Enterprise Linux, IBM Information Server, and the Sun N1 toolkit. Back ported the RedHat clustering tools and GFS modules for RedHat Enterprise Linux 4. Customized the operating environment for running the IBM Information Server 8 family of applications, consisting of IBM DB2 V 9.3, IBM WebSphere 6.0, IBM DataStage and IBM QualityStage. Was the single onsite operations point for the HP-UX, Solaris, FreeBSD, MacOS X, and Linux machines. Wrote custom tools for monitoring and metrics. Fluent in the change management process as it relates to Sarbanes Oxley, internal, and external audits. Extensive documentation of custom applications, primarily our custom data warehouse solution. Designed and implemented the company's external web presence using Solaris 10. Utilized zones, the ZFS file system, and hardware RAID on the T2000 platform. Wrote my own tools in Perl, C, and the Bourne shell. Debugged many complex operational problems. Specialties Started running Linux around 1993, kernel was 0.99 Moved onto SunOS and Open/FreeBSD. Since have worked with HP-UX and SCO extensively. Currently work with RHEL, AMI Linux, CentOS, OpenBSD, EC2, Parallels, and Rackspace.

    $30.00 /hr
    5,608 hours
    4.97
  2. Brad R.

    Brad R.

    MCITP, MCSE, Virtualization, Network Engineer/Mangr, Writer

    United States - Last active: 6 days ago - Tests: 3 - Portfolio: 1

    Experienced Technology Leader, Implementation Manager, Change Agent and MCSE/MCITP. In-depth knowledge of IT systems and operations, project management, large-scale system implementations and information security with over twelve years with hands on experience as an Enterprise Administrator and Network Manager in NT, 2000, 2003 and 2008 environments. Extensive experience in Server Virtualization including VMware and Hyper-V integrated with HP and EMC SANs. Practiced understanding of Exchange, Lync Server 2010, Fortigate UTM devices, Active Directory, PKI and DFS. Five years of experience as a corporate Microsoft/Certification trainer and serving as an MCSE/CCNAinstructor for technical schools, colleges and corporations such as AT&T; and Comcast Cable. I have created course curriculum for two online schools. I am extremely proficient in Server 2012 and 2008, including Server Core edition, Hyper-V, Fortinet, VMware, Procurve, HP and EMC SANs, Active Directory, Exchange, SQL, Procurve switches and many other technologies. I have been highly involved in server virtualization for seven years and am proficient in both VMware and Microsoft Hyper-V. I am also a professional writer and have contributed to several white papers and authored published articles in professional journals. Have also written and reviewed test questions for IT professional certifications. I am looking for other opportunities to supplement my work load. My Microsoft Profile can be accessed by this link: http://www.mcpvirtualbusinesscard.com/VBCServer/brad.rudisail/profile For more information on me go to www.bradinthecloud.com

    Groups: Microsoft Certified Professionals

    $34.94 /hr
    1,818 hours
    4.96
  3. Raul F.

    Raul F.

    Full-stack developer and marketplace integration specialist

    Spain - Last active: 18 hours ago - Tests: 2 - Portfolio: 8

    Marketplace integration specialist (Ebay/Etsy/Amazon/Shopify/Paypal/Magento). Ebay API, Amazon MWS AWS, Etsy API, Magento,... - Java Programmer Certified - Backend: Java, PHP - Frontend: Bower, Grunt, Angular JS, jQuery, HTML5, SSE. Twitter-Bootstrap. - Technologies: Spring Framework, Hibernate, MyBatis, Iron.io, memcache, jUnit, Maven, Git, AWS, GAE - Experience in BPM/Cloud services. Cordys Fundamentas and Cordys BPMS certified. - Experience in agile methodologies (SCRUM). Degree in Computer Sciences. Visit my portfolio: http://rfvallina.com

    Groups: Application Developers Alliance, ebay

    $55.56 /hr
    1,830 hours
    4.90
  4. Miranda R.

    Miranda R.

    XHTML/CSS/Flash/Photoshop/Illustrator Pro in Seattle, USA

    United States - Last active: 18 hours ago - Tests: 17 - Portfolio: 3

    Over the last several years I have developed many websites using a variety of methods. I enjoy the flexibility that CSS/XHTML provides, so that is my medium of choice - all of my work is standards-compliant (XHTML 1.0 strict), and I have also converted many outdated sites into standards-compliant sites with table-free CSS layouts and improved functionality, leading to a better overall user experience. In addition to web coding, I have extensive experience in photography and traditional graphic design. My goal is always to produce sites that are as visually appealing as they are functional. I also have experience working with ColdFusion, Flash, PHP, JavaSript, and related technologies, and can convert PSD files into themes for Wordpress, Joomla, osCommerce, and similar formats, with great attention to detail and retention of full functionality. I believe in keeping 'the big picture' in mind - I incorporate SEO techniques into every project, and plan projects to allow for future expansion and updates.

    $38.89 /hr
    7,684 hours
    4.85
  5. Kamelija Gievska

    Kamelija Gievska

    Corporate Identity/Print Add /Brochure an Poster Design/Logo design

    Macedonia - Last active: 1 day ago - Tests: 2 - Portfolio: 49

    In the last 8 years, I have worked for advertising agencies and as a freelancer and I have designed wide range of different logos (including complete corporate identity) for domestic and foreign companies. Also a have great experience in designing brochures, catalogs, posters, flayers and Print Adds. The essence of my competency lies in complete and fast branding and I am seeking opportunities to help you brand your own company and be one of the chains that helped your business to grow.

    $30.00 /hr
    4,038 hours
    4.96
  6. Alvaro Gomez

    Alvaro Gomez

    Computer vision, Machine learning and pattern recognition expert

    Peru - Last active: 3 days ago - Tests: 5

    M. Sc. in Computer science with a mention in image processing and pattern recognition. Im a Computer vision specialist with over 4 years of hands on experience on a variety of computer vision applications. I have strong background in maths and computer science, research skills in computer vision, senior programmer in C/C++ and Matlab. On the past years i focused on the development of computer vision solutions for real world problems involving extensive research and ground breaking solutions. I have over 3 years experience working with OpenCV and porting image processing solutions to mobile platforms for real time processing. Im very interested in the research and development of a new challenge computer vision tasks including pattern recognition, machine learning and image analysis. I am seeking opportunities to develop and maintain complete computer vision applications, whatever standalone or back-ends for smart websites or light weight solutions for mobile applications.

    $33.33 /hr
    3,735 hours
    4.96
  7. Novita Rahardjo

    Novita Rahardjo

    Graphic / Web Designer

    Indonesia - Last active: 18 hours ago - Tests: 4 - Portfolio: 29

    I am a Graphic Designer based in Surabaya, Indonesia, specializing in User Interface Design and Development. I build clean, appealing, and functional interfaces which comply with the latest web standards. But that's just a part of it. Design is my life. It's something I do before I go to bed, and something I can't wait to do in the mornings. Without it, my world would be black and white. I design with Photoshop, Illustrator, Dreamweaver, and Flash. I code sites with XHTML and CSS, using a little of JavaScript, Actionscript, and PHP.

    $55.56 /hr
    4,722 hours
    4.99
  8. Sergei Basharov

    Sergei Basharov

    JavaScript/React/Angular/D3/CSS3/HTML5 Frontend Developer and Designer

    Russia - Last active: 18 hours ago - Tests: 9 - Portfolio: 11

    Currently I am focused in creating rich client-side apps using JavaScript advanced techniques, CSS3 and HTML5 features. I am keen in creating perfectly looking user interfaces and visualizations with help of D3,js and my great experience with UI/UX. Using best practices and a streamlined workflow I manage to work on complex solutions that include hundreds of user-cases and apps views that are often created as real-time dynamic apps. I use TDD where applicable in my frontend engineering work. Being a problem solver for my clients I am sure that clean, semantic markup and content-driven, responsive layouts are the way forward. I believe in building sites that are device-agnostic, adapting layouts and experiences to a user's viewing environment. I am a fan of progressive enhancement in my work. Having solid backend development experience with multiple languages like Python, C# and JavaScript I try to imagine and see the whole picture of projects I work on.

    Groups: Yahoo Web Hosting Designer

    $60.00 /hr
    3,363 hours
    4.90
  9. Dave Swinehart

    Dave Swinehart

    Freelance VoiceOvers

    United States - Last active: 6 days ago - Tests: 5 - Portfolio: 13

    I am a middle age / young adult male voice over actor (Native North American English speaker). My voice is deep, silky, authoritative, baritone, and Midwestern. My rates vary depending on the type and length of project. Rates are negotiable. I offer edited and finished audio tracks recorded in my own studio. Non - union.

    $50.00 /hr
    65 hours
    4.99
  10. Sergii Lysiuk

    Sergii Lysiuk

    Network Security VoIP Specialist - Cisco, Juniper, Linux, Asterisk

    Ukraine - Last active: 16 days ago - Tests: 17

    I am looking for projects that I can complete on a part-time basis. They can be either short term projects or long term projects. I can also provide ongoing consulting and administration if needed. I am experienced in Cisco Routing & Switching, MPLS, Security, Network infrastructure applications ( SNMP, Radius, DNS, DHCP , etc) Voip - including Asterisk, Call-Manager , Unity, FreePBX, Elastix. Server administration experience ( Linux, FreeBSD)

    $38.89 /hr
    381 hours
    5.00