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On average, 136 CentOS projects are completed every quarter on Upwork.

136

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Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: July 1, 2015
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  1. Joel L.

    Joel L.

    IT Consultant

    United States - Last active: 1 month ago - Tests: 4 - Portfolio: 1

    15 years of experience in Customer Service, Technical Support and Break/Fix. 9 years of Linux System Administration (performed in parallel with the above) 1 year as a Network Security Analyst. My particular specialty is troubleshooting and problem analysis. More specifically, taking large problems, breaking them into component issues, and resolving the resulting list of issues, thus eliminating the original problem.

    $33.33 /hr
    15 hours
    0.00
  2. Hasan Kurtoglu

    Hasan Kurtoglu

    PowerMTA Administrator and Deliverability Expert

    Turkey - Last active: 1 month ago - Tests: 1

    Have administration experience on linux/windows servers and MTA's. Have been managing PowerMTA servers since 2008,have deep experience on managing PMTA. Achieved sending 150K emails in a minute,1 billion emails in a month to inbox! Helped many companies setup their email infrastructure from scratch. Have helped setting-up several ESP infrastructures. Currently serving to many companies around the world on their sending infrastructures. Total volume of managed PMTA servers of the customers is nearly ~5 billion emails per month to inbox!( mostly :) ) Deliverability experience on mainly Hotmail,Yahoo and Gmail. Currently open to any PowerMTA installation,configuration,optimization and deliverability consultancy jobs. Please visit my references page to get an idea of my expertise : http://powermta.me/our-references Specialties: System Administrator PowerMTA Administrator Email Deliverability Specialist

    $120.00 /hr
    0 hours
    0.00
  3. Ryan Gyure

    Ryan Gyure Agency Contractor

    PHP Developer, Consultant, Start-Ups

    United States - Last active: 06/30/2013 - Tests: 11

    Over the last 8 years I have developed a number of websites in HTML, PHP, and MySQL. Since a young age, I've been hacking away at code and coming up with better ways to do things. At the age of 14, I launched FusionXHost and created one of the first sustainable post2host web hosts. I have a wide range of skills working on a number of start-up companies and ideas. Since 2004, my company -- FXH, Inc -- has been providing a wide range of IT services all over the world and has severed as a springboard for a number of different start-ups. I have been the primary employee of FXH, Inc and generally do most of the work myself. I primarily focus on the technical side of start-ups and currently have an in-depth knowledge of PHP, MySQL, JSON, Zend Frame, RESTful APIs, and a number of popular third-party APIs (e.g. facebook, twitter, foursquare, etc). In addition to the coding side, I also work on server infrastructures using Citrix XenServer and Amazon Web Services. I also have experience with C-Corps, LLCs, and payroll accounting; both the state and federal filing requirements. I’ve been using Quickbooks since 2004 and very familiar with the software and accounting standards. In addition to the accounting, I’m familiar with the legal aspects of starting and running a company. I’m not an expert in these fields, but am a jack of all trades type and know enough in each area to be cost efficient.

    Associated with: FXH, Inc Agency

    $83.33 /hr
    0 hours
    0.00
  4. Henry james B.

    Henry james B. Agency Contractor

    Copywriter, Consultant, Web and Software Developer, PR, SEO

    Philippines - Last active: 03/11/2013 - Tests: 19

    Over the last 5 years, I have developed several software and web applications using VB/.Net, HTML, DHTML, PHP, MySQL and Ajax mostly for startup companies and small and medium enterprises.

    Associated with: Compumatrix International

    $15.00 /hr
    0 hours
    0.00
  5. Malith H.

    Malith H.

    Network and IT Security Engineer Cisco, Juniper,Checkpoit, Microsoft

    United Kingdom - Last active: 5 months ago - Tests: 1 - Portfolio: 1

    To work in a competitive environment that effectively utilizes my analytical, interpersonal, leadership and organizational skills to conceive and achieve solutions. The solutions which help the organization in not only meeting its targets, but also allowing it to grow, thereby, enhancing my own skills as an individual and as a key player in the organization's development. Summery Over 5+ years of experience in planning, designing and implementation of LAN/WAN, WLAN, VPN networks. Expert knowledge of Cisco and Microsoft networks environment. Hand on experience in network, security, systems administration and systems support. Certified in CCNA (R & S), CCNA Security and CCNP certified (Routing & Switching); comfortable with Cisco 806, 1600, 1700, 2500, 2600, 3600, 7200 Series Routers, Cisco Catalyst 1900, 2900, 3500, 3650, 3700 Series Switches and wireless access points and bridges (Cisco Aironet 1200 series APs, 1300 series Bridges ) Expertise in SME LAN,WAN & CAN design, configuration & implementation with cisco devices, wireless network design/configuration & implementation, good working knowledge in Wide Area Networks (WANs) e.g. ADSL, MPLS, Frame Relay, PPP, ISDN. Experience in security implementation and firewalls, Site-to-Site & Site-to-Multisite VPN, DMZ, SSL, remote access and access control servers. Good hands on experiences with checkpoint safe@office 500, Check Point U-5 130, CheckPoint CPUTM-EDGE-N32 and Cisco ASA firewalls. Good knowledge of configuring Cisco based routing e.g. RIP, EIGRP, IGRP, OSPF, BGP, MPLS, VRF,HSRP, VRRP, GLBP, NAC, route redistribution, NAT, Route maps and switching e.g. VLAN implementation, STP, VTP, Access lists, L2/L3 Switching etc. Experience in designing cable and wireless networks, structured network cabling such as STP, UTP, coaxial etc., installation and configuration of LAN, WAN and wireless networks with active components such as routers, switches, firewalls, modems, access points, repeaters etc. Well understandable knowledge and hands on experience in Windows server 2003, 2008, Linux Cent OS and Redhat 5.

    $15.00 /hr
    0 hours
    0.00
  6. Zhirayr G.

    Zhirayr G.

    Agile web development

    Russia - Last active: 5 months ago - Tests: 3 - Portfolio: 2

    Hi, My name is Zhirayr. In my portfolio, are a few of the programs that I've developed. I believe my strong points are my 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 2008, I'm freelance web developer. Mostly work with backend (big data, cluster programming, high load). Also from 2012, I develop Ruby / Ruby On Rails applications and websites. Thank you in advance for your time and consideration. I look forward to working with you soon. I have a Bachelors in Software Engineering from Moscow Aviation Institute (National Research University), in the Russia. Listed below are my experience and skills. — Ruby; — PHP; — Frameworks: Ruby On Rails, Sinatra, Laravel, Phalcon; — Core web: XML, JSON, HTML/CSS, JavaScript; — OS: Mac OS X, Linux; — VCS: Git, SVN; — Bug/Issue trackers: Jira, Assembla, Redmine; — SQL: PostgreSQL, MySQL; — NoSQL: Riak, MongoDB, Redis; — AWS: EC2, S3, CloudFront, ElasticBeanstalk, EMP, etc; — UML.

    $38.89 /hr
    0 hours
    0.00
  7. Salvatore Cristofaro

    Salvatore Cristofaro

    Engineering - IT System Specialist - IT Security expert

    Italy - Last active: 03/10/2014 - Tests: 2 - Portfolio: 1

    Master's Degree in IT Security and Digital Forensic Certifications: - ISO/IEC 27001:2013 Leader Auditor Qualified - ISO/IEC 20000:2011 Leader Auditor Qualified - Linux Professional Essentials - Axis Certification Engineering: small/medium Data Center, software design, capacity planning PrograArchitect/Administratormming knowledge and scripting: Java, C/C++, Assembler, Bash System monitoring: Nagios, Server (Linux, Windows, *nix), IP cameras, air conditioners, UPS (soho and industrial one), power generators, air conditioners, environmental sensors Information Security Management System: open source asset management (ISO/IEC 27001:2005, ISO/IEC 20000-1), trouble ticketing, software versioning, revision control Software Service: CSM, Apache Web Server, Nagios, Tomcat Servelet, Icecast, proftpd, Hylafax, Avantfax, Asterisk, Freeswitch, ZRTP, SRTP, qmail, ssmail IT Security and plannig: Data Center design and implementation. Capacity Planning, Business Continuity, Disaster Recovery. Wireless network design (short / medium / long-range), wireless connections simulations based on terrain, VPN (OpenVPN, IPSec), Network Sniffing, penetration test , computer forensics, data encryption / decryption, IP networks design and setup. Cyber attacks Analysis (intrusion detecion, malware, virus), centralized antivirus management. ZRTP and TLS Voip. RFID / Bar code. Video Surveillance: Design and setup of video surveillance systems, with simulations based on land contours. Trashware: design and optimization of systems, LTSP Virtualization and Cloud: design and offline / live (Physical to Virtual) migration, Xen, XenServer, UML, VMware, VirtualBox, Cloud Computing Other: UPS / Electronic Generators / Air-conditioning / Machinery Location / maintenance and real time monitoring of industrial devices UPS, Generators Generators and precision air conditioners. Systems Breton FP400 and Proliner Performance: benchmark suite LMbench, optimization of systems, tuning Apache and MySQL Databases: SQL, MySQL Database Server, PostgreSQL, JDBC, MSSQL 2005/2008 Backup: Live Backup, Disaster Recovery planning and system migration Mobile: Mobile Device Management, BYOD, Android Security and Tuning. OS: GNU Linux (Gentoo / Debian / RedHat / CentOS), FreeBSD, Windows (XP, Vista, 7, Windows 2003/2008 Server), Mac OS X. Basic knowledge of Aix, OpenSolaris,

    $44.44 /hr
    0 hours
    0.00
  8. Victor W.

    Victor W. Agency Contractor

    Systems Monitoring Engineer

    United Kingdom - Last active: 08/02/2014 - Tests: 1 - Portfolio: 1

    Enterprise Systems Management: IBM Netcool Impact, IBM Netcool Omnibus, Tivoli Enterprise Console, IBM Tivoli Monitoring, IBM Tivoli Workload Scheduler, Websphere, NetIQ Operations Center, Nimsoft, Nagios Operating Systems: CentOS Linux, Redhat Enterprise Linux, Solaris, Windows Server, VMS, Apple OSX, SLES Development Tools: Maven, Collabnet, CVS, Subversion Web Servers: Apache, Tomcat Cloud: Amazon Web Services, EC2, S3 Databases: Oracle, MySQL, MariaDB, MSSQL Continuous Integration (CI) & Configuration Management: Puppet, Jenkins Scripting: Bash, Perl Training Courses: Netcool, Nimsoft, Tivoli Workload Scheduler, Tivoli Netview, Sun Solaris 8 Sys Admin 1, DECNET phase IV & V, Microsoft Operations Manager, VMS for operators, VMS for administrators, McAfee Anti- Virus Administration for VirusScan, McAfee Anti-Virus Administration for ePolicy Orchestrator, Sun Solaris 10 Sys admin, Amazon Web Services, Redhat Systems Administration. Project Management: Design and implementation of small companies IT infrastructures including small scale PBX for internal and external calls, DNS, email, web servers, database, file servers and file backup servers. Built on dedicated and virtualized and AWS platforms. References available on request

    Associated with: Two Technical

    $60.00 /hr
    0 hours
    0.00