Network & System Administrators

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  1. Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Netherlands - Tests: 7

    10+ years of Linux/Network experience with different systems. Finished and delivered SMB solutions to big corporate companies lie BNP Paribas, ABN AMRO or RBS. My main areas of knowledge are: 1) Networking (Cisco/Juniper/F5/BlueCoat and Linux/FreeBSD based solutions like vyatta/pfsense etc) 2) Security - Cisco IPS/IDS, CheckPoint, Linux/FreeBSD based, Juniper etc 3) Linux administration - mail system, database (mysql/mysql cluster), server with high load average, load balancers for server farms (Cisco/F5 based and Linux based like keepalived or apache/nginx with reverse proxy) 4) VoIP - Cisco/OpenSource(Asterisk and different installations based on asterisks like freepbx/elastix etc) There is a very small piece of my knowledge, I'm always looking for opportunity to grow and I'm pretty sure that if you give me tasks - I'll find out best way howto get it done.

    $27.78 /hr
    4,776 hours
    5.00
  2. Thomas B.

    Thomas B.

    System Engineer (Linux, Mac OS X, Windows)

    Hungary - Tests: 3 - Portfolio: 1

    My name is Thomas Bereczky and I’m interested in being your System Engineer, I have over 7 years of experience in IT and systems implementation for small and medium- size organizations. I feel confident I would be a valuable contributor to your team and would be excited to show you what I can do. Over the past 7 years I have gained an extensive knowledge and experience in: • Operating Systems – Linux, Mac OSX, Microsoft Windows Servers. • Hosting Systems - Parallels Plesk, cPanel / WHM, Virtualmin / Webmin, Ajenti, zPanel, DirectAdmin • Webservers - Nginx with PHP-FPM, Apache HTTPD, Apache Tomcat, • Ruby, Node.JS, Django Applications • Server Side Caching - Memcached, Varnish, APC • Email Servers and Services – Postfix, Dovecot, Exim, Office 365, Google Apps, Mandrill, Rackspace Mailgun • Active Directory • Virtualization Platforms - VMWare ESXi, VMWare Workstation, SolusVM, Virtualbox, Parallels Virtuozzo, Proxmox VE • Amazon Web Services - EC2, RDS, ELB, S3, CloudFront, Route 53, Autoscaling, Workspaces, VPC • Monitoring Systems – New Relic, Nagios • Programming Languages and CMS Systems - Basic PHP Knowledge, HTML, CSS, Wordpress, Bash scripting, Currently I'm in the process of learning Ruby on Rails (2 Finished Project) • Project Management, Team Collaboration, Billing Tools - Atlassian Jira, Atlassian Confluence, OwnCloud, SugarCRM, WHMCS, Zurmo CRM • Version Control - GIT, SVN, Atlassian Stash (GIT), Atlassian Fisheye, Gitlab • Network Administration – Bind DNS Server, IPTables Firewall, CSF Firewall, UFW Firewall, Routers / Switches, iSCSI Storage Devices, NFS Storage Servers, VPN Servers, • VOIP PBX Servers such as 3CX Phone Systems • I'm very comfortable with working in command line. • I have experience in Project Management including supervising small / medium size development teams. • When I don’t know something, I can always look into it and learn it. Search engines are my best allies. If you need immediate assistance - don't hesitate to contact me. Talk soon! I look forward to hearing from you, Thomas Bereczky System Engineer

    Groups: Bluehost Developers and Designers

    $33.33 /hr
    580 hours
    4.97
  3. Julio Carvajal

    Julio Carvajal

    CCIE 42930,2xCCNP,Juniper Specialist

    Costa Rica - Tests: 2 - Portfolio: 4

    Senior Network and Security engineer with more than 10 certifications from different vendors including a CCIE. If you hire me you will be hiring an ex-former Cisco TAC Security Engineer that worked in more than 1000 different cases with different Cisco Equipment and Issues. I have experience leading big projects, creating documentation, designing , configuring and troubleshooting different networks. During my years of Freelancer I have taken tickets for multiple vendors (Juniper, Cisco, HP, CheckPoint, Fortigate, Palo-Alto, SonicWall) and I have even provided training worldwide for different companies. Here are the certifications I have: CompTIA Security+ Wireless OffSec Pentesting CCNA JNCIA CCNA Sec CCNP Security CCNP Routing&Switching JNCIS-SEC CCIE Routing&Switching 42930 Languages: Spanish, English Thanks for checking my profile and I hope you have a great day, Regards, Julio Carvajal

    $77.78 /hr
    162 hours
    4.91
  4. Arkadiusz S.

    Arkadiusz S.

    Front-end Developer

    Poland - Tests: 2 - Portfolio: 1

    Hi there, I’m Arek! I am an passionate Front-end Developer and Architect from Poland. I help companies from Europe and USA write good quality, scalable software. I can do my best at front end topics: - Python and Django (as backend) - Backbone.js / Marionette - Twitter Bootstrap - JavaScript (Phonegap, node.js, winJS and many smaller libs.) - SCSS, LESS and CSS3 (performance, resposive design, scale) - Jasmine - unit tests In my workflow I prefer to use GIT. Please feel free to ask me a question. I can send you some code from my previous work.

    $50.00 /hr
    8 hours
    4.68
  5. Alexander Gladysh

    Alexander Gladysh Agency Contractor

    Getting things done, smart!

    Russia

    Your project, large or small, in our caring experienced hands. We specialize in high-load web-services, big-data analytics and games — but we're experienced in solving many other IT problems as well. If it can be done, we can do it. For you. Each our engineer is a T-shaped person — with a deep expert understanding of his speciality topic and comprehensive outlook for wide range of related IT fields. Our management are veterans with decades of combined experience in IT and dozens of completed — and failed — projects. We know where the pitfalls are and how to avoid them.

    Associated with: LogicEditor

    $30.00 /hr
    19 hours
    4.89
  6. Anatoly Yuzefovich

    Anatoly Yuzefovich Agency Contractor

    Linux/FreeBSD/Administrator/Perl/Web-programing

    Russia - Tests: 1

    I'm skilled Nix-administrator and perl developer with 10-year old experience. Administration: Linux, FreeBSD. Services ftp(proftpd,vsftpd,pure-ftpd), http(apache,nginx,lighttpd),dns,email,mysql and other services. Networking: Cisco systems devices (routing & switching). Network architecture. NAS/SAN: IBM, HP, NetAPP and work with Blade Systems (IBM, HP) VmWare vSphere virtualization. Perl programming: Web-programming - DBIx, dancer, plack, templates, modern perl, mojolicious. JavaScript - extjs, jquery, node.js, angular.js

    Associated with: Coderunes

    $33.33 /hr
    376 hours
    5.00
  7. David Codesido

    David Codesido Agency Contractor

    Linux Systems Administrator

    Spain - Tests: 3

    Over more than 15 years I've been a GNU/Linux fanatic while I was studying my Computing Science Engineering career. After that I have worked for 8 years as a Systems administrator and DevOps for an IPTV company. During these years I've mastered on server side administration oriented to web services and web backends (Tomcat, Nginx, Apache, Postgresql, MySQL) and with Cloud oriented services (CDNs, High Availability, Clustering). As part of my job I also have knowledge of a whole set of tools on GNU/Linux for debugging networking and OS issues and both Bash and Python good programming and scripting skills. As a result of my career tesis and years on IPTV, I have a deep understanding on video technologies, transcoding and streaming. As a DevOps I have a good understanding on software design and testing, customer relationships and project managing which gives me a new angle on approaching projects on time phocusing on customer satisfaction and Quality Assurance.

    Associated with: Treitos

    $33.33 /hr
    212 hours
    5.00
  8. Sergey B.

    Sergey B.

    Unix administrator, Web-based solutions, VoIP, Hosting, CMS expert

    Ukraine - Tests: 5

    From large IBM 360 mainframe monsters to modern ISP- and enterprise- oriented servers, more than 16 years, I'm working in the industry of an information technology. I have a large experience to install and configure server's hardware and software, another network equipement, to keep them in working conditions, to work in hosting-oriented team as administrator. At last years my focus of interest has extended to web-oriented applications, such as CMSs, corporate project managing software, and website developement projects with corresponding and supplementary software. Also my competency lies in server-side network services, including web-servers (not only Apache), SQL, DNS, Xen, OpenVZ, VoIP PBX, etc..etc

    $17.78 /hr
    286 hours
    5.00
  9. Jamie B.

    Jamie B.

    Microsoft Technology Expert/CCNA

    United States - Tests: 3

    Talented IT professional with 14 years of experience in a wide variety of technologies. I started out in desktop support, worked my way up to global server support, including virtualization technologies, and have spent the last 3-4 years developing my Cisco networking skill set. I am currently a CCNA on track to get my CCNP. I am very proud of how diverse and broad my IT experience has become. I am well-versed in Azure, VMware, Hyper-V, all Windows Server OS including 2012, All Windows desktop OS including 8.1, site-to-site and remote VPNs (various vendors), Active Directory, SCCM, SCOM, and most of the popular versions of Linux. I am very skilled at designing, monitoring and supporting large server and network environments. I am looking for an opportunity to earn extra work doing the things that I love to do most in IT.

    $30.00 /hr
    299 hours
    4.97
  10. Murugeshwari S

    Murugeshwari S

    Senior Tester, Expert in Functional and Performance

    India - Tests: 1

    Overall 7 years of experience in Information Technology; Software Testing. Good understanding in Agile methodology with good experience in Scrum Master. Have good Process knowledge in SDLC/TLC models Worked extensively on Customer Escalations, Test Execution status and Defect Status Tracking.Well experienced in Manual and Performance testing also have exposure to Automation testing (Silk Automation) Good knowledge in AR client, Remedy QM applications, TestDirector, Testlink, Fogbugz and Jira. Preparing Test Strategy document, Performance strategy document, Test scenarios, Test conditions, Risk Assessment documents Involved in Performance Testing, System Testing, Integration Testing, Regression Testing, Compatibility Testing, Sanity Testing, Upgrade Testing, Worked closely with support on critical customer issues Microsoft certified in .Net, ISTQB Certified.

    $12.00 /hr
    756 hours
    5.00