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Network Security Upwork freelancers typically receive a client rating of 4.75.

Last updated: October 1, 2015
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Nikola Nikolaev

Nikola Nikolaev

BI Analyst, Linux Expert


I'm a member of a small team. Most of the companies, especially those that do not have IT as a core business, do not utilize the full potential of its IT staff. Our mission is to help business, by preventing it spend too much money on internal IT services. We believe that the expertise and strong motivation are the keys to successful implementation of any technology at any scale. That is why we built a team of self-driven, self motivated experts, with outstanding professional track. Main activities of the team are in the field of GNU/Linux, networking, system integration, software development and implementation in corporate organisations, business intelligence and business process management, financial management and accounting.

89% Job Success
$25.00 /hr
90 hours

Sudan D.

Sudan D.

Network Engineer : Cisco : Juniper : Fortinet :

Nepal - Tests: 6 - Portfolio: 4

Despite the fact I am in young age I have years of experience with computers, networking and system. I am very tenacious and autodiact technical person for Cisco and Juniper Enterprise Network. I love to dig deep into specific technical challenges. 6+ years experience in Enterprise Netwrok. # Hands On Experience # Cisco: ASR 9K, ASR 1K, Nexus 7K, Nexus 5K, 4507R+E, 3900 Series, 2900 Series, 3850 Switches, 3650 Switches, 2960X Switches, ASA 5525X, ASA 5515X, ASA 5512X Juniper: MX40, MX5, SRX 550, SRX 240, SRX 220, SRX 210, SRX 100, EX 4300, EX 4200, EX 3300, EX 2200, MAG 4610, etc. More from Other Vendors # Some Highlights # @ Defining architecture and design for Enterprise customers. @ Lead engineer on some of the big enterprise networking projects. @ Training Internal Employee and customer. Main focus on Cisco and Juniper internetworks at Campus and Enterprise customers

100% Job Success
$34.00 /hr
243 hours

Christopher Jinks

Christopher Jinks

Advanced 1st & 2nd Line systems analyst

United Kingdom - Tests: 2

I can provide 1st and 2nd line systems support to an outstanding standard with impeccable customer service. These include, but are not limited to; -Software -Hardware -Networking -Operating systems -Virtualisation -Thin Client -Microsoft Office packages -Password retrieval -Scripting

100% Job Success
$8.33 /hr
8 hours

Ishan Ariyaratne

Ishan Ariyaratne

Network Engineer

Sri Lanka - Tests: 3

Work Experience: (From April 2010 to Present) Worked at Inbay Pvt. Ltd. [] as a system administrator (Business to Business). Joined Inbay as a Technical Support Engineer and got promoted to the position of the technical lead – Technical support team (Business to Consumer), then as a system administrator (Business to Business). Inbay is an organization which provides IT Support services for both Business and Consumer markets in UK and US. Duties & responsibilities; • Providing the technical leadership and subject matter expertise in applicable technologies and serving as a point of escalation for technical issues related to specialty. • Identifying, diagnosing and providing timely resolution for level one, level two and three user inquiries. • Identifying risks & issues and taking ownership to deliver appropriate resolutions. • Producing, delivering, and maintaining appropriate documentation for systems in accordance to document control standards and procedures • Supporting and maintaining effective relationships with business and consumer clients. • Providing case status updates to management and end users, developing documents and implementing standard operating procedures and customer service guidelines. • Collaborating with other team members on planning and execution. Hold progress meeting • Leading post-incident debrief sessions with key clients. • Contributing to long-term tactical and strategic planning to ensure that the tools and processes are appropriate to meet the future business requirements. • Reviewing, and updating as appropriate, operations procedures, standards, and technical policies. Was Employed at Eureka Technology Partners from April 2010 to September 2010 as a Support Technician.

100% Job Success
$11.11 /hr
1,788 hours

Shama M.

SQL BI /RHCE/ Automation / Scripting/ Python/ QA / CEH

United Kingdom - Tests: 7

Highly motivated developer following Agile methodologies with overall Six+ years of experience in :- - Oracle(SQL, PLSQL 9i), SQL server 2008 (TSQL, SSRS, SSIS) - Sharepoint, BIDS, SSMS, Report Manager, Report Server - Automating routine tasks using Python, Bash, Batch, Powershell scripting. - AWS/VPS/Redhat/CentOS/Ubuntu Linux Administration. - Windows 2003 / 2008 / 2012 Server Administration. - Replication/Clustering setup, Server hardening. - Server Monitoring (Nagios, Cacti, Monit, Munin) and Tuning. - VMWare, XEN, Virtuozzo, Virtual Box. - Continuous Integration (SVN, GIT, Jenkins, TeamCity, Python, Ant, Maven). - SMTP setup using Postfix. - HTML, CSS3, Python, Shell Scripting. - Hosting Expert (Cpanel WHM, Plesk), VPS, Linux, Windows, Backup, Migration, Administration. - Manual and Automated Testing using Selenium, AutoIT, Python, Sikuli - Smoke & Sanity, Black/White Box , Integration, Regression, Load, Security Testing, UAT, Performance, Non-functional, Database testing, exploratory testing. - White Box Testing tools : NUnit, JUnit, TestNG, MS Test - Bug Reporting Tools : TestTrack Pro, Bugzilla, Trac, Trello

81% Job Success
$17.00 /hr
13 hours

Bogdan daniel S.

Bogdan daniel S.

VCP, MCSA, Exchange, Vmware, HyperV, Servers Expert Admin

Romania - Tests: 8 - Portfolio: 1

10+ years experience in Information Technology (IT) Major areas of expertise: VMware and Microsoft virtualization technologies. Designing and implementing fault-tolerant virtualization clusters SAN and NAS systems (iSCSI, FC) Windows 2003 / 2008 / 2012 Server * Active Directory * Microsoft ISA Server and TMG * Clustering * MS Windows XP/Vista/7/8 desktop/workstation operating systems * Centralized anitivirus systems WSUS * TCP/IP, Switching and Routing * Firewalls IBM, HP, Dell Servers * DNS, DHCP, Wins * Print Server * File Server * Network and Servers documentation * LAN hardware/software administration, design, installation and configuration * Print Server * LAMP Administration * Linux services : squid, postfix, dovecot, firewall, ldap, mysql, nagios, dhcp, bind etc Certifications: MCP - Microsoft Certified Professional MCSA - Microsoft Certified Systems Administrator VCP - Vmware Certified Professional VCP-510 * VCA-DCV - Vmware Certified Associate Data Center Virtualization.

Groups: Microsoft Certified Professionals

100% Job Success
$22.22 /hr
2,674 hours

Hafiz Zohaib Hafeez

Hafiz Zohaib Hafeez Agency Contractor

Windows Server and Messaging Specialist

Pakistan - Tests: 4 - Portfolio: 7

A highly skilled Microsoft platform consultant with extensive experience with Windows Server, Active Directory, Exchange and Office365, with an emphasis on migrations/transitions, support and implementation. I have more than 10 years hands on and in-depth experience with Windows Server, Exchange and Office365. Over the last few years I have been involved heavily in Exchange/Office365 migration and infrastructure support projects. My areas of expertise are: Active Directory Microsoft Exchange (2003 - 2013) Windows Server and Small Business (2003 - 2012) Virtualization (Hyper, VMWare) Firewalls (ASA, Watchguard XTM, PfSense) Microsoft Data Protection Manager. I have strong troubleshooting skills and solid reputation for providing outstanding technical support.

Groups: Microsoft Certified Professionals

Associated with: Microsoft Exchange Support, Mustafa Techs

91% Job Success
$24.67 /hr
866 hours

Alysa W.

QA Leader-Senior Software QA-Automation/Manual tester-mobile tester

China - Tests: 5 - Portfolio: 9

8 years of rich experience in Manual and Automated testing of software, firmware, web-based, desktop application, router, and mobile with focus on function, system performance/stress and system compatibility. My core competency lies in team management, test process improvement, create comprehensive Test Pan, write positive/negative Test Cases , perform Manual/Automated testing, find bug as early as possiable and make sure they get fixed, write detail Test Report and give some advice. Successfully worked on different products ,such as DCM, UHC, Accero, Config,Tranzax and so on. Succssfully developed test scripts to automate website and desktop appliction. Rich experience in Smoke Testing, Functional Testing, Regression Testing, Sanity Testing, Usability Testing, Cross Browser Compatibility Testing, Exploratory Testing, Backend Testing, Security testing, Stress testing, Performance testing, Alpha testing and Beta testing. Rich experience in automated testing by TestComplete, QTP. Some experience in performance testing for web service by Jmeter. Rich experience in bug-tracking systems, such as JIRA, Mantis, Bugzilla and Redmine. Some experience in the following areas: Project Management, Team Building, Mobile/IPad testing, Network knowledge, TCP/IP, SQL, Shell, Python, C, VB, Firebug, XPath, Selenium. Excellent communication and presentation skills while dealing with business comunity, team members and developers. Detail-oriented and trouble shooter. I'm freelancer and I can commit to a long term. I am seeking opportunites to build quality assurance for you or your business.

$15.00 /hr
5,221 hours