IT & Networking Administrators

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  1. Federico F.

    Federico F.

    .Net software developer

    Argentina - Last active: 15 hours ago - Tests: 8 - Portfolio: 3

    Interested in creating software systems meeting your needs. With exceptional skills on Microsoft Technologies especially on .NET platform and Angular.js with years of good working relationship with onshore and offshore clients. My goal is to help you not only by implementing what you require of me, but also by providing advice, guidance, and best practices based on my wide experience

    $33.33 /hr
    772 hours
    5.00
  2. Hamza Waqas

    Hamza Waqas

    NodeJS - PHP - MongoDB - ElasticSearch - Redis - Consultant (Platform)

    Pakistan - Last active: 15 hours ago - Tests: 4

    Guy with big shoes who spent a lot of time in rushing into the technology stacks. He mostly get his hands dirty with high engineering where we need to start with atomicity, enhancement, scalability and distributed architectures. He knows what we have to do when the implementation is not just about the tech talk. Wait, did you asked write me to write the for loop? Well, there are a lot of other challenges as well when it comes to the choice of stack, selection of right platform and ability to end up with the exact matters! He has experience of working with different frameworks, languages & platforms. Usually, you'll find his hands dirty into something really reliable and that is making out high-end engineering. He's familiar with the solutions & principles required to write own framework as he has written couple of MVC, HMVC & boilerplate frameworks in PHP & Node.js. In back days, he was working with PHP and spent all of his big part in that. But now you'll always find him working on Node.js with some top class stacks to make robust & scalable products. Hamza is *nix (OSX / Linux) enthusiast so don't tell about benefits of using #windows. The guy with entrepreneurial spirit (no, I'm not that fake VISIONARY ENTREPRENEUR) and is already co-founding few startup companies. Languages: - Node- Python- Java- PHP- JavaScript Frameworks: - Zend- Kohana- Slim- Drupal & custom written MVC frameworks. - Node- express- compound- restify- sails.js- kraken.js - Play!- Bottle Mobile: - Android SDK- PhoneGap Databases: - MySQL- Oracle9i- MongoDB- OrientDB- Redis- Cassandra- Couchbase Distributed: - Hadoop- Storm- Mahout- Stanbol- Tika Search: - ElasticSearch Frontend: - Backbone- Ember- React- Angular Version Control: - Git- SVN AWS: - EC2- S3- DynamoDB- RDS- Redshift- SQS (Amazon) Brokers: - RabbitMQ- Kafka- ZeroMQ- PubNub- Redis(Pub/Sub) Job Servers: - Gearman- Celeryd PM: -Github- Bitbucket- Redmine- Gitlab- Jira- Pivotal

    Groups: Application Developers Alliance

    $55.56 /hr
    675 hours
    4.91
  3. Jordon B.

    Jordon B.

    Laravel & WordPress? No problem.

    United States - Last active: 3 days ago - Tests: 13

    Hello! I'm an English speaking critical thinker and problem solver living just outside of Grand Rapids, MI. (EST) In my 14 years of professional experience I have filled many roles. I've been tech support, virtual assistant, project manager, designer, analyst, marketer, software engineer, and business owner. My goal here at Upwork is to find others needing help on their new projects, whether it be a small blog redesign or a complex web application. I take each project on as if it is my own and focus on delivering a great product on time, and under budget. I would love to talk to you about your specific problem and try to see if we're a good fit!

    $55.56 /hr
    166 hours
    5.00
  4. Arthur G.

    Arthur G.

    C++ Expert with multifarious hands-on experiense

    Russia - Last active: 15 hours ago - Tests: 2

    Hands-on experience of 10+ years in software development. C++, C#, SQL, html and many other under Windows, MacOSX, Linux (mostly Ubuntu) and rtos. Strong Computer Science background. Please direct your attention to Employment History section of the profile for details. Thanks in advance! St. Petersburg University of Telecommunications graduate. Was teaching C++ for 7 years.

    $34.00 /hr
    133 hours
    5.00
  5. Josh Ellis

    Josh Ellis

    Senior Project Manager/Product Developer

    United States - Last active: 18 days ago - Tests: 2 - Portfolio: 10

    I have a comprehensive background in product development/project management within the confines of international medical device regulations. I thrive on taking vague ideas and ill-defined needs and turning them into concrete reality. I can start a medical device company from the ground up and I can do it on schedule. This includes... From a Regulatory perspective: --Initial regulatory requirements analysis for new markets (EU, Brazil, Australia, US, Canada, etc.) --Identification of applicable test protocols (ISO standards, etc.) and management of test houses --Interfacing with regulatory agencies and identifying consultants --Writing of regulatory submissions such as FDA 510(k)s --Quality System development and implementation to required standards (ISO 13485, FDA, CMDCAS, etc.) --Identification of loop holes and temporary workarounds to ease implementation pains and maintain profitability From a Project perspective: --Using good interpersonal skills to keep people motivated and excited --"Conducting the orchestra", developing a logical rhythm of events and ensuring timely completion of tasks --Turning "unknown unknowns" into "known unknowns", forseeing problems before they arise and altering the "orchestra" accordingly --Coordination of teams on an international level --Intelligently focusing energy on tasks with the highest variability, including procurement of additional expertise as necessary --Always keeping an open dialog about the day-to-day changes in the "Good/Fast/Cheap, pick any two but only two of the three" trade-offs in milestone achievement From a Product perspective: --Development of design parameters from organization input (Sales, Marketing, Support, etc.) --Nitty-gritty technical work like engineering drawings/drafting, statistical analysis, resdesigns due to manufacturing constraints, component supplier identification. --Identification, qualification, and day-to-day management of international manufacturers --Design History File/Technical File development and maintenance --Design Transfer for complex electromechanical devices From an Operations perspective: --Part Number/Drawing Number/Revision Control development and implementation --Engineering Change Order workflow and impacts --Purchasing-Manufacturing-Sales-Shipment procedures and throughput --ERP/MRP implementation including workarounds for system limitations I am a strong believer in a person's word. If I tell you I'm going to do something by a certain date that is my word and I'm going to get it done, hell or high-water. I don't mess around: I live on a remote homestead so I grow my own food, build my own structures, fix my own car, brew my own beer. My entire life requires a high level of precision execution every single day, failure is not an option.

    $80.00 /hr
    1,673 hours
    4.96
  6. Christopher Cox

    Christopher Cox

    Excel, Access, and VBA Expert

    United States - Last active: 1 day ago - Tests: 1

    For over fifteen years, I have served as an expert in Microsoft Excel and Access. I have streamlined business processes and maximized functionality by creating complex Access databases. I have also developed complex Excel Macros using Visual Basic for Applications to automate manual processes. I want to make your desktop processes as efficient as possible, and I would love to put my expertise to work for you! I have an Bachelor of Business Administration degree in Accounting from Loyola University in Maryland, and I have worked in information technology, finance, and accounting in both private industry and government.

    $35.00 /hr
    121 hours
    5.00
  7. Ilya N.

    Ilya N.

    System Administrator / DevOps

    Russia - Last active: 15 hours ago - Tests: 11

    12+ years of experience in administration of servers powered by the Linux and FreeBSD operating systems. Highly dedicated to success, a hard working person. Full time independent contractor during the last 4 years. * CentOS, Debian, RHEL, Ubuntu; FreeBSD, OpenBSD * AWS, Digital Ocean, Hetzner, Linode * Ansible * Apache, lighttpd, nginx, uWSGI * MySQL, MariaDB, PostgreSQL * Postfix, Dovecot, Postgrey, SpamAssassin, ClamAV, OpenDKIM * Docker, KVM, libvirt, LXC, OpenVZ, Vagrant, VirtualBox, Xen, FreeBSD jails * BIND, NSD, PowerDNS * LVM, DRBD, Heartbeat, Keepalived * Quagga, Open vSwitch, iptables, ipfw, pf, bonding, bridging * StrongSwan, OpenVPN, Racoon * Sensu, New Relic, Nagios, Munin, SmokePing, Monit, Collectd * SAN: HP MSA, IBM DS * Backups: duplicity, rsnapshot, bacula * Python (Boto, Django, Scrapy), Ruby, shell, PHP * cPanel/WHM, WHMCS (designed and developed from scratch a registrar module for an unsupported domain registry)

    $50.00 /hr
    1,857 hours
    5.00
  8. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 27 days ago - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    36 hours
    5.00
  9. Khizer Farooq

    Khizer Farooq

    Computer Systems and Network Engineer CCNA|MCSA|MCITP|OCP|ITIL|VMWARE

    Pakistan - Last active: 3 days ago - Tests: 13 - Portfolio: 12

    I have done Computer Systems Engineering, worked with different companies for three years and now starting to work as a full time Free Lancer. I have an extensive first hand experience of dealing with System Networks, Windows Servers ( 2003, 2008),2012 different vendors Internet management and security solutions ( Hardware and software) like Air Live 802.11G Internet Access Server, Sonicwall,WatchGuard , ISA 2006 server, GFI Web Monitor, HP Servers, Client and server OS. Other than professional experience I have done Worked in following virtualization software's VMware ESXi 5.0-5.5 Microsoft Hyper-V, Sun/Oracle Virtual Box. Other than professional experience I have done different International Certifications CCNA. MCITP Windows7 Enterprise MCSA Windows 7 MCTS. | Windows 7 MCTS. | Windows 8 PRO: Designing and Deploying Messaging Solutions with Microsoft Exchange Server 2010 OCP( Oracle Sun Solaris OS 10 System Administrator) ITIL Foundation. VTSP 5 I have successfully completed following projects, that were for IT Govt Sector and five star Hotel's Planning Designing and Establishing Network Infrastructure using Microsoft Operational Framework (MOF v 4.0),network consisted of 200+ clients and 20 + servers (HP Proliant ML-150, ML-350,Dell Power Edge 2900). Installation configuration and management of ISA Server 2006,Juniper SSG 5 working together, providing security solution for more than 100 static and 200+ dynamic clients. Automate the process for Management of Internet User Account for the users by Implementation of RADIUS Server In-house developed Software Application Up gradation of clients systems from Windows XP to Windows 7 . Up gradation of domain from Server 2003 to server 2008 Enterprise R2 .

    $55.56 /hr
    595 hours
    4.95
  10. Gary G.

    Gary G.

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

    United States - Last active: 21 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
    1,400 hours
    5.00