Network & System Administrators

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Anton Baranov

Anton Baranov

Microsoft Certified IT Proffesional

Russia - Last active: 1 month ago - Tests: 2 - Portfolio: 10

I'm Microsoft certified IT professional with 10 years of experience in user tech support and server administration. My strongest skills are MS Exchange 2010 infrastructure, MS Lync 2010 Infrastructure, MS Active Directory infrastructure, MS TMG 2010, network infrastructure design, Symantec BackupExec I have several certifications: MCITP: Enterprise Administrator on Windows Server 2008 MCITP: Enterprise Messaging Administrator on Exchange 2010 MCITP: Enterprise Lync Server Administrator 2010 MCTS: Windows Server® 2008 Network Infrastructure, Configuration MCTS: Windows Server® 2008 Active Directory, Configuration MCTS: Windows Server® 2008 Applications Infrastructure,Configuration MCTS: Microsoft Exchange Server 2010,Configuration MCTS: Microsoft Lync Server 2010,Configuring MCTS: Windows® 7, Configuration

$33.33 /hr
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Nick Silvestros

Nick Silvestros

Expert system administrator

Greece - Last active: 7 days ago - Tests: 13

I have started using Linux since 2001 and I work professionally as a Linux administrator since 2004. I have worked for small companies but with big requirements. I have great experience in all major linux services (Apache, MySQL, Bind, Postfix, Dovecot etc) and in network administration using Linux (iptables, routing etc), Mikrotik and Cisco devices. I also have experiece in Kannel, LTSP and many programming languages including Java, C/C++, PHP, SQL, Web 2.0 technologies. During this year I mainly work on some projects in relation to machine vision using the OpenCV library. I think that my main advantages are my patience and my persistence. I am looking for challenging and interesting projects!

$30.00 /hr
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Dariusz M.

Dariusz M.

System Architect VMware/Microsoft/Symantec/Zimbra....

Poland - Last active: 4 days ago - Tests: 3

For hardworking people there is no difficult tasks. Also for patient people :) I am such a person. I mainly work remotely. If you can provide me remote access to your devices (ilo, webex, ssh, vpn,vnc, rdp etc..), then there is no task that I could not accomplish for you. I have a lot of experience but please do not be afraid to negotiate the price corresponding to you;) Below my basic skills (but not hesitate to ask for something different!) : - MCPS, MCNPS, MCITP, MCTS, SA, MCSA,VCP,VTSP,VSP,VTSP-SV System Architect responsible for the proper functioning, development, innovation, of all company servers and services. Administration of Windows 2000/2003/2008/2012 servers via WAN/LAN. Web (Apache), Mail (Zimbra, Exchange), DNS (Bind, DNS Blackholing,MS DNS), AD ..Among other things project-management, designing, implementation, installation, complex upgrades of VMware vSphere / VMware View, migration (linux, windows), VMware Horizon Suite (VMware View) , Cytrix XenServer.., AD, CA ARCserve Backup, Symantec Backup Exec (also 3600), Symantec SMS, Symantec Messaging Gateway, Symantec DLO, Symantec SEP, Wyse Device Manager (WDM), Arkeia Backup, Exchange, Zimbra, Nagios, FortiGate, Rsyslog, G Data AntiVirus, Dhcpd .. Knowledge of architecture of Rack and Blade Servers (HP,Fujitsu..), Storage (iSCSI, FC), Synology, Backup ... Working knowledge of Linux systems management (servers, workstations)

$30.00 /hr
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Paul S.

Paul S.

UNIX Systems Expert

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

I have 20 years experience supporting complex production environments. I have excellent planning, communication, documentation, and training skills. I am self-directed with a strong work ethic and have extensive experience working in multinational environments. I have a broad background in systems design and engineering, data center migrations, supporting and troubleshooting network services and applications, automating administrative tasks with scripting languages, and high availability environments. Key areas of expertise are Solaris (SPARC and x86), Solaris Zones and ZFS, Veritas Cluster Server, Red Hat and other Linux variants, storage volume management (VxVM, SVM, LVM). I am always looking for interesting projects.

$60.00 /hr
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Chris Haubner

Chris Haubner

Systems/Software Engineer

United States - Last active: 1 month ago - Tests: 1 - Portfolio: 3

I am a seasoned IT professional with broad experience in multiple programming languages, operating systems, and a variety of IT functions. I have done everything from technical support, systems architecture, managing global data centers, and creating custom software solutions. I am currently looking to freelance and help solve problems using the skills and knowledge I have obtained. I enjoy IT challenges that allow me to grow and learn new things related to my field. I am a hard worker, who enjoys seeing things to completion, and am extremely thorough and detail oriented in everything I do. I may not be the fastest, nor the cheapest, but I will get the job done and get it done without cutting corners. All of my previous clients from other side ventures have been extremely pleased with my work, and have recommended me to others as well.

$100.00 /hr
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Stanislav Kotov

Stanislav Kotov

Network System Engineer/System Administrator - Fre...

Russia - Last active: 13 days ago - Tests: 7

I am Senior network engineer/Architect searching job at free time (usually few hours/day). Now i am working at Cisco/Juniper Partner in System Integration Company. I have built projects for ISP: IP and/or IP/MPLS networks from small provider (up to 700 users, pure IP/L2) to nationwide backbone and broadband networks (IP/MPLS Core with BGP and complex TE, B-RAs). All the MPLS services: Internet, L3VPN, VPLS, L2VPN, mVPN; including InterAS and CsC cases. Participate on all project stages from presale (equipment choose and design) to implementation and documenting, and further high-level support for networks, usually remote. I know in detail and have big practice of various network technologies: Routing: BGP, OSPF, EIGRP, ISIS, LDP, RSVP TE, NAT (all cases) VPN: MPLS VPN, GRE (PPTP, DMVPN), IPSEC Security: Firewall - Cisco PIX/ASA, Juniper SRX access-lists/filters - CBAC/ZBF QoS: can develop and deploy you traffic classes, implement marking and queuing and shaping, policies and your needs, including multi-color policers. Deploying different main and complementary services for ISP on UNIX/Linux/Solaris/Windows platforms, including virtualized ones: DHCP, DNS, Radius, Tacacs+, Mail, HTTP servers, SNMP, j/netflow collecting, integration with billing systems, MySQL and other. Big experience in automation: building different monitoring, configuration, self-healing scripts also for large amount of devices using multitasking. Bash, Perl scripting Have big experience in Cisco/Juniper product line from small routers to top line (CRS/TX Matrix). Also know and have practice of using many network hardware vendors (Extreme/Foundry/Dlink/Zyxel/Huawei). Programming experience: Perl (many scripting mainly on UNIX), PHP (made full project for university for student contract system, using MySQL, Javascript also), Shell scripting - bash, awk, sed, beginning to learn Python, C/C++ - some small application and system programming, MFC (Microsoft Foundation Classes), can easily modify program code. Also have experience in Windows administration AD deploying till W2003. Huge experience of user support. The rate can be lower if project topic is interesting for me but i don't have corresponding experience for it. I am taking full responsibility of my work. Have strong tradition to make documentation on my work. If you have big projects, which requires presence in the site we can discuss it.

$56.00 /hr
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Evgeny Ivanov

Evgeny Ivanov

Experienced Linux system administrator

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

Over 10 years of experience in IT, system administration both Linux and Windows and technical support for various international companies. Specialized in LAMP, web hosting, messaging services and support of enterprise level business critical systems in financial and banking, aviation and software development areas. Providing professional consultancy in project management, Linux system administration, WordPress based web solutions and IT management.

$30.00 /hr
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Ivan Matveev

Ivan Matveev

Professional Web Programmer

Russia - Last active: 25 days ago - Tests: 4

My first priority is to solve business problems, the second one is the code. That is the job I am good at. Over the last 5 years, I have developed a wide range of web applications using different languages including PHP and Java. Got 2 years of experience in systems design, including distributed tasks, queues packages, and protocols. Experience with system architecture patterns implementation in code. Programming languages: Extensive application of PHP in different areas and tasks SQL JavaScript Xpath, Xslt Some C/C++ Java Client-side: AJAX and DHTML with jQuery and Google API HTML 4/XHTML table-less markup CSS frameworks less/sass Grunt Distributed programming JSON-RPC XML-RPC REST sockets process forking daemons in PHP/C Databases MySQL — performance tuninq, query optimization, backups, replication Some Postgres SQLite UNIX environments Experienced with setup and administration of web servers running on Linux Nginx web server Headless Java Testing and CI PHPUnit Teamcity Codeception Selenium

$33.33 /hr
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Brant Wells

Brant Wells

Network & Systems Administrator

United States - Last active: 3 days ago - Tests: 2

I have a wide variety of experience in dealing with IT. I have worked with almost everything from a Commodore 64 and up. Strengths: * PHP Application development (full stack -- including HTML, CSS, Javascript and Databases (MySQL and MSSQL) * Network and Application Performance Monitoring (using Zabbix). * Network Security Monitoring using Snort / Suricata / various UTM firewalls * Virtualization Management (VMware, Scale Computing, Microsoft Hyper-V)

$35.00 /hr
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Carlos Figueiredo

Carlos Figueiredo

Ruby on Rails developer with Ecommerce experience

Brazil - Last active: 1 month ago - Tests: 5 - Portfolio: 2

Full-stack developer proficient on Ruby on Rails and Java, focused on Agile projects. Experience with Front-end MVC frameworks like Angular.js and Backbone.js Developer with years of experience in Business Intelligence techniques, like Basket Analysers, basket retail and Customers Relationship Management. Experience on many Ecommerce, CMS and CRM platforms like: Ecommerce - Spree (Ruby on Rails) - Shopify (customization apps)

$40.00 /hr
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