IT & Networking Administrators

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  1. Stephen Pagano

    Stephen Pagano

    Management Consultant / Expert Excel/VBA and Database Developer

    United States - Last active: 1 day ago - Tests: 2

    Over the past 30years, I have been building companies from the ground up-some my own, some on behalf of others. I have a solid foundation in all the business disciplines across a broad spectrum of industries. I started my consultancy because I have a passion for business development and solving business problems. My core competencies are my extensive experience as an owner and executive, my attention to detail and quality, and my ability to communicate clearly and reduce complex business issues to laymen's terms. I am seeking opportunities to utilize my skills for the betterment of your business. Also, I am a software engineer and specialize in applying technology to improve the business process.

    $35.00 /hr
    0 hours
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  2. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - Last active: 2 months ago - 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
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  3. Oleg Boytsev

    Oleg Boytsev

    Information Security Engineer/Malware Analyst/Reverse Engineer

    Belarus - Last active: 16 days ago - Tests: 1 - Portfolio: 1

    5 years of experience in IT Security field. Highly motivated to solve interesting tasks. Core Qualifications and abilities: High skills in *nix systems administration and information security; Computer network attack/defense; Deep experience in web application security testing (according to OWASP guideline); Strong background in malware analysis and reverse engineering; Responsive, organization skills and the ability to work with minimal supervision; Ability to learn and apply new technologies effectively. Technical skills: Standards/Practices: OWASP standards, ISO 17799 Operating Systems: Windows, Linux, FreeBSD; Networking: TCP/IP, LANs, VPNs, Firewalls; Software: Ollydbg, IDA Pro, GDB, Nmap, Metasploit framework, Burp Suite, Sqlmap, Wireshark, Tcpdump. Programming languages: x86 Assembly, Python Network & System Security: implementing different kinds of tools for network (ModSecurity) and system security Vulnerability Assessments: have a strong background in web application security testing, buffer overflows, format string vulnerabilities Malware Analysis: familiar with tools and techniques that allow to analyse and describe an evil sample according to the best practices. Unpacking, disassembling, binary Debugging/patching, dynamic (behavior) analysis. Reverse Engineering: familiar with Ollydbg, IDA Pro and GDB. System administration: LAMP, DNS, iptables, etc.., know how to solve a vast majority of issues.

    $35.00 /hr
    0 hours
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  4. Ruslan Aksenov

    Ruslan Aksenov

    Web and SharePoint Developer with 4 years of experience

    Russia - Last active: 24 days ago - Tests: 4 - Portfolio: 6

    Good day =) I'm a highly skilled professional with 4 years of Web Development in total including ASP.NET (+MVC) and SharePoint. Have worked on 7 different large scaled projects so far including: The enterprise portals for - The biggest Russian Media Company VGTRK - Life Assistance Services Enterprise Portal - XFIT Enterprise Portal - PIONEER GROUP Enterprise Portal - BIN Insurance Enterprise Portal A BnB website on ASP.NET MVC technology (was developing it nearly 3 years ago during my university years) - http://arendadirect.ru/

    $14.00 /hr
    0 hours
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  5. Vitaly Tuev

    Vitaly Tuev

    Project manager

    Russia - Last active: 23 days ago - Tests: 8

    I have over seven years of business experience managing business integration projects. I managed the different complex projects for world-famous companies, like Wrigley's, Ford, Kraft Foods and Heinz. My core competency lies in managing projects with ERP systems integration, customer customization and software development. I also have good experience in the following areas: Java EE Databases (MySQL, PostgreSQL, SQlite) BPMN (Apache Activity) ECM systems XML,Web-services, Continious integration Full resume http://tuev.pro/me/

    $16.67 /hr
    0 hours
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  6. Yogesh Sharma

    Yogesh Sharma

    Active Directory and Exchange consultant

    India - Last active: 26 days ago - Tests: 3 - Portfolio: 1

    A Highly motivated and result-oriented individual with over 8 years of experience in a professional environment having a great work culture and meticulous attention to detail with emphasis to customer satisfaction. Ability to achieve set targets and goals in a timely manner. Microsoft Certified System Engineer in Windows Server 2003 with Exchange and Technology Specialist in Windows Server 2008. Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft Exchange Server suite (2003 to 2013). Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft Active Directory Services(2003, 2008). Extensive hands-on experience in configuring, monitoring, and maintaining systems running Microsoft Cluster Services. Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft SharePoint Services(MOSS 2007). Troubleshooting Windows Server related issues(AD, DFS, IIS, DHCP, DNS, and WSUS) Projects, Installations, Configurations and Migrations etc. Configuring and troubleshooting on Mailbox, CAS, and Hub and Edge server roles installations. Configuring High availability solutions like Local Continuous Replication/Cluster Continuous Replication/Standby Continuous Replication technologies. Troubleshooting on Mailbox Migration, Public Folder replication, Database Inconsistency, Exchange services, Offline Address Book, Recovery Storage Groups. Implementing Disaster Recovery in exchange servers for recovering exchange information. Configuration and Troubleshooting External Mail flow (Inbound/Outbound), Mail flow between servers, Spam issues, Edge Synchronization. Configuring Anti spam/Transport agents, Application Relay, SMTP/Transport service problems. Analyzing and evaluating issues using various tools and utilities like EXBPA, EXTRA, ExMon, PFDAVAdmin, Exmerge, DCDIAG, NetDiag, NLtest, telnet, Replmon, AD modify, ADMT, MFCMAPI, etc. Installation, Configuration & Monitoring of Trend Micro Internet Messaging Security Suits & Symantec Endpoint Security. Basic Hygiene & Server hardening of all Windows OS, Linux OS & Subsystems likes IIS, ADS, and SQL Server etc. Security Health Check of all Windows & Linux OS. Ensure documentation of all activities & procedures adhering to organization standards

    $12.00 /hr
    2 hours
    0.00
  7. Nenad Vico

    Nenad Vico

    Architect

    Serbia - Last active: 25 days ago - Tests: 4 - Portfolio: 1

    Java Architect, Over 10 years of experience using: J2EE, Spring, Hibernate, JPA, Struts, GWT, Smart GWT, WebServices, Applets, Servlets, Swing, Swt, Ant, Maven, Apache libraries, Dods, Axis, JUnit, EasyMock, Dwr, JasperReports, Velocity, FreeMarker, Code generators, Twter4j, REST, POI, Fax4J, CXF, JSF, Spring Boot, Spring Rest, Spring Security, Spring Integration, Spring Batch, Hadoop, Cassandra, Hbase, Hive, Sqoop, Solr, Cammel, Angular, Bootstrap

    $27.78 /hr
    0 hours
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  8. Martin M.

    Martin M.

    Expert Web Developer

    Argentina - Last active: 12 days ago - Tests: 3 - Portfolio: 10

    Im a Software Engineer. I am passionate about web development and information technology in general. While I have been developing web applications for more than 10 years, I like to research and learn new technologies. If I get the opportunity to work with you, you will not regret it -Over 10 years experience in web development, LINUX + APACHE + MYSQL/ORACLE + PHP -I developed many cms based websites -I developed many web applications -I developed an ERP for Pharmacy Industry with traceability subsystem integrated to a government platform vía WEBSERVICES. -I developed a Geriatric Software. -I developed a Billing Software for Healthcare Client -I developed a customizable Government Website And more.... -Doctrine and Propel Experiences -Certified Oracle DBA. -Email Spooling -Lucene Index (fast searches) -Symfony Expert -Cake -JQuery, JQueryUI, Ajax, HTML, CSS. -MVC Pattern, IOC Pattern, OOP. -Experience in Oracle (SQL and PL/SQL), Mysql, PostgreSql, Firebird -Webservices implementations, Client and Server -Experience in Web application security (Xss, Crsf, SQL Injection, DoS Attack) -SVN -PHPUnit -Java, JSP, Servlet, Tomcat. -Experience in Streaming Platform: RED5

    $55.56 /hr
    0 hours
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  9. Giorgos Anastasiou

    Giorgos Anastasiou

    George Anastasiou, System Administrator And Web developer

    Greece - Last active: 1 month ago - Tests: 8

    Over the last 4 years, - I have developed some sites using HTML,PHP, JavaScript, Jquery library and MySQL for startup companies and small businesses. - I am using mainly GNU/Linux operating system, so i am experienced in solve problems for servers or desktops. My beloved distribution is Gentoo, because it gives me the opportunity to customize everything, from kernel to software. - I have developed two servers for two new accounting companies, in Linux operating system, both of them have uptime more than a year. - I have some experience in Bash and Lua scripting language. - I know basic stuff about networking and routing protocols. - I have experience in Windows OS, mainly what ever has to do with operating system optimization and hardware related staff.

    $8.89 /hr
    0 hours
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  10. Marcel Verspuij

    Marcel Verspuij

    Social WiFi specialist

    Netherlands - Last active: 1 month ago - Tests: 1 - Portfolio: 2

    For different customers I build social WiFi solutions. From city free WiFi solutions to small business plug & play social WiFi solutions. This for MikroTik en OpenWrt routers. The cloud WiFi CRM is brand independent. It can serve the social WiFi landing page for many different captive portal and hotspot solutions. The cloud WiFi CRM is white label. Each customer can have his own look and feel. Customers can add their own functionalities and reports in the CMS. Because of the different international customers solutions are build in Amazon cloud or on their private server. Linux and Radius experience is high.

    $33.33 /hr
    4 hours
    0.00