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On average, 113 Network Security projects are completed every quarter on Upwork.


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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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Giorgi Javakhidze

Giorgi Javakhidze

MCITP | Vmware | Windows - Linux Systems Administrator

Georgia - Tests: 6

In the last 3 years, I have administered many IT networks, managing over 1000+ users. My core competency lies in complete managing of windows - linux based networks, including Active Directory, Exchange, MS-SQL, virtual clouds, based on VMware / Hyper-V and EVA Storage Area Network. I have deep experience in the following software solutions: Basic server services ( DNS, DHCP, WSUS, Vpn, etc. ) Windows 2003/2008 Server Windows 2003/2008 Active Directory Lync Server, Exchange Server, SharePoint Server. Monitoring: SCOM, Nagios Web Server: IIS, Apache Mail Servers : MDaemon, Postfix. Database: MSSQL, MySQL. Proxy / firewall solutions ( Squid, TMG, ISA ) VMware vShere and vCloud: ESXi, vCenter, vCloud Director, vShield

$15.00 /hr
183 hours

Curtis Click

Curtis Click

Systems Engineer

United States - Tests: 16 - Portfolio: 11

Objective To obtain a senior software engineering position in the entertainment industry that will allow me to utilize my diverse array of technical, creative, and problem solving skills while allowing me to apply my love of games and entertainment. Professional Skills · Languages – C/C++, C#, Java, PHP, Python, Perl, Lua, HTML/CSS, JavaScript · Databases – MySQL, MsSQL, Access, PostgreSQL (limited) · Source Control – Perforce, CVS, Subversion, Mercurial · Operating Systems – Windows, MacOS, Unix (Linux, BSD variants, Solaris) · Hardware Platforms – PC, Mac, iOS, Blackberry OS, Windows Mobile

$11.11 /hr
0 hours

Rinat T.

Rinat T.

Software developer and server administrator

Kyrgyzstan - Tests: 13 - Portfolio: 2

I'm a skilled software developer and system administrator. Short: — 5 years of Linux System administration — 7 years of PHP and web development Love to code, administer, find vulnerabilities and just make things work. Long: I have software development experience over 7 years including web development on engines like Wordpress, Joomla, DLE and system software on bash/perl/C++. I started to develop web with HTML, PHP using CMS. After that developed web software and applications for ISP under linux on Perl/C and PHP5 where I got system administration skills and networks knowledge. I planned and created server infrastructure on Linux Xen Virtualization (including corporate E-Mail, DNS, Webservers) with Zabbix monitoring with sms-notifications for my current job. I have a Bachelors in Software Engineering from American University of Central Asia, in Bishkek, Kyrgyzstan. Listed below are my experience and skills. — PHP: OOP, MVC — Javascript frameworks: JQuery, mootools — Core web: XML, JSON, HTML/CSS, JavaScript, AJAX — Linux: Debian, Ubuntu, Gentoo, Xen, VMware, Zabbix, Bash, Apache, Nginx, CPanel, Bind, Mail, iptables, ufw — DevOps: Jenkins — Security: Kali Linux, XSpider, nmap, Metasploit Framework, penetration testing — Databases: MySQL (and MariaDB), Oracle — Windows: Windows 2000/XP/7/8 — VCS: Git, SVN — SQL

$16.67 /hr
66 hours

Dharmesh Khalas

Dharmesh Khalas

Website, Software and Mobile App Developer

India - Tests: 2 - Portfolio: 8

I am an IT professional with 8+ years’ experience within Web technologies/ Application development & software development. During my working career I have worked within Agile development environments, collaborating with several development teams to build, test and deploy large commercial websites ranging from E-commerce to Database driven sites. I have an exceptional ability to understand client objectives from a commercial perspective and translate these in to tangible technical requirements that can be understood by a very highly technical team, whose expertise span a breadth of various and progressive technologies along with traditional development technologies. Since my success within an employed arena, he seized the opportunity to set up Zeviion Technology to put forward an offering that is unique to the market. My strategy is 2 fold. I. Client satisfaction is of paramount importance II. Promote a Creative, Vibrant and Enjoyable company culture I provide Ecommerce Solutions Payment Gateway Integration Shopping Cart development Ecommerce Web Design Custom Shopping Cart PHP ASP.Net-Shopping Cart B2B - B2C Open Source Customization Get best customized development & designing by using open source products for your business. We offer all range of open source products, revive your old business, cost effective design & development solutions with latest integration facilities, provided by open source products... Joomla Customization Mambo development Drupal Web development CakePHP development OS-Commerce development AspDotNetStoreFront X-Cart development DotNetNuke development Software development With latest technologies, customized, cost effective, high-quality software development & designing services is our specialty, our expertise is the result of our experience with wide range of industries in software development... Web Portals Customized Software Internet/Intranet Software .NET Programming Java Programming Offshore development Enterprise Application Software Product .NET Mobile Solutions Website development. PHP development ASP.NET development Ruby on Rails development AJAX Programming ColdFusion Application development Application development Application Migration We propose best practices for application migration with use of migration strategies. Our professional application migration approach includes detailed testing by experienced experts for the perfection and to reduce the migration risks. We offer wide range of application migration services. Database Migration ASP to ASP.NET Migration CGI to PHP Migration VB to VB.NET Migration Visual FoxPro to ASP.NET SQL to Oracle MySQL to SQL Server PHP to ASP.NET Rich Application development For the development of wide range of rich applications, we use rich internet application tools and various technologies to increase interactivity. Our experts development high quality rich internet application architecture for the reflection of all rich internet application features... So We are really churn to fulfill requirements of IT Projects.

$8.89 /hr
0 hours

Nader A.

Nader A.

Computer Engineer

Tunisia - Tests: 5 - Portfolio: 5

My mission is " to achieve and maintain the highest possible standard of professionalism and excellence." I am hardworking, task oriented, solution-oriented, dependable, motivated, independent , not so quick but eager learner and pays attention to details. Another face of my personality consists in the fact that I am strongly determined.

50% Job Success
$15.00 /hr
24 hours

Sergey Zinchenko

Sergey Zinchenko Agency Contractor

Senior iOS, Android and Delphi developer. Software Engineer.

Russia - Tests: 8 - Portfolio: 12

I am from Rostov-on-Don, Russia. I have a diploma in mechanics, mathematics, and Computer-science, as well as 4 years of full life cycle software design, development and maintenance. My experience makes me an expert in Objective-C, iOS SDK, Java, Android SDK, Node.js, Javascript, HTML, CSS, Delphi and best practices. I able to jump into any project to fulfill any unexpected vacancy to drive the project to completion on time and within the budget. Over the past few years, I have successfully developed and published many applications for Apple Appstore and Google Play. This illustrates my performance, responsibility, and the high level of interest. Separately, I would like to give a list of names of known things that I well know how to use: ✔ Objective-C, ARC, Cocoa Touch, Foundation Kit Framework, UIKit Framework, iAd Framework, MapKit Framework ✔ CoreData Framework, SQLite, SQL ✔ AVFoundation, OpenGL, OpenAL ✔ CFNetwork, HTTP, SOAP, JSON, XML, REST, TCP/IP, UDP, SSL ✔ CoreLocation, Push notifications, Zlib, threading. Now I'm ready to turn your ideas into great mobile apps and to find a long-term partnership. Please contact me if you are interested.

Groups: Application Developers Alliance

Associated with: S Media Link

85% Job Success
$25.00 /hr
2,317 hours

Arti Agrawal Agency Contractor

Top Rated | 2500+ hrs | IOS | Android developer | Webservices | Swift

India - Tests: 7 - Portfolio: 16

Over the last 10+ years i have been developing a wide range of mobile, desktop, web applications on different platforms including Java, IOS, Android, J2EE, PHP. I am having a strong hands on experience in developing cutting edge solutions for different industry needs. I have served various industry by providing the software solutions for different devices including medical, telecom, e-commerce, service industries, B2B solutions, finance sectors and government agencies. I proactively come up with great ideas and solutions for industry needs. Putting up best approaches, processes and strategies to achieve the goal in limited time-frame. Following are some categories of applications that i have done : - Telecom - Medical and healthcare applications - Bluetooth connectivity and BLE enabled apps - ibeacons - Image processing, editor, makeup and makeover apps - Location based and GPS enabled applications - E-commerce apps - Resaurant apps, food ordering, delivery tracking, online shopping apps - Augmented reality apps - Video editor - Social networking, Photo sharing and applications similar to instagram and facebook - Chat/Instant messaging applications, text chat, audio calling, VOIP, SIP - Utility applications - Point of sale and service applications for B2B customers. My expertise covers: - iOS (iPhone/iPad) Development, Android Development - Strong Objective C, SWIFT, Java, PHP programming skills - Working on complex features of IOS - Working with latest Xcode and IOS SDK - Experience with Eclipse IDE, Android Studio IDEs. - Social integration like Facebook, Twitter, LinkedIN - Cloud server deployment - Location Based Applications - Google Map Service, Foursquare API, Google Maps API V2, Geo-fencing and tracking, Parse SDK - In app purchase, Push Notification by using APNS - Image editing and image processing, Image Manipulation, Photo Filter, Saturation, Sharpness, Contrast, Hue, Brightness, etc. - Camera API - Audio/Video Processing - iBeacon development : integration with Gimbal, Estimote ibeacons. - Backend, Web service, JSON, XML, REST, SOAP, MySQL, SQLite, HTML5, PHP, Java, Dot Net - Web Design (HTML4/5, JavaScript, PHP5) - Github, SVN, Redmine, JIRA, Testflight, Dropbox, Amazon - Advertise : iAd, Admob, Adwirl - Barcode QR code scanning - Apple store application upload, Google Play application upload - Security using encryption and decryption algorithm implementation in applications. - Technical documentation Others - I have worked for long time on highly distributed development environment. - Working and managing different development teams, coordinating with them on development and deliveries. - Committing the code remotely and merging, branching and releasing the customer builds. - Regular Skype meetings, proper and timely status update emails. - Scrum calls. - Weekly or bi-weekly sprint plans, and build releases - Test build distribution via testflight - Overlapping few or all working hours with the clients on located in different timezones. - Project development, management, planning, bug reporting and fixing. Ads integration: - Revmob SDK, chartboost SDK, Google Admob SDK, iAd, Playhaven SDK, AppLovin Application Analytic: - App Analytics integration with Google Analytics, Localytics, Flurry Analytics - I am very competent in working with agile development tools such as JIRA, Redmine, Assembla, Pivotal tracker and much more for task management and sprint planning. - Experience working with the source control tools such as Github, SVN, subversion, bit bucket, TFS etc. Experience in : - PHP, .NET C# webservices and APIs - Amazon web APIs Expertises:- UIKit, AutoLayout, CoreText, CoreImage, CoreAnimation, Social Framework, Interactive Pop Gesture, CocoaPods I look forward to serve you BEST and provide you the best solution that you are looking for. -- Best Regards, Arti Agrawal Senior Mobile Developer

Groups: Application Developers Alliance


97% Job Success
$13.33 /hr
2,260 hours

Christopher Yarger

Christopher Yarger

US ARMY trained IT specialist and electronics engineer

United States - Tests: 7 - Portfolio: 1

Over the last 6 years I have written websites in HTML, PHP, and JavaScript. My main skills lie in network administration, Linux system administration, electronics engineering, open source software, technical documentation and embedded systems design and development. My latest projects include: Snobot: Automated Snow-blower BTRCCar: Bluetooth Controlled RC Car Furmon: Furnace monitoring system Various: * HVAC monitoring and control systems * Robotics systems * Automation systems (Residential, Commercial, Industrial)

$61.11 /hr
11 hours

Aayush Sibal

Aayush Sibal

Senior PHP Developer

India - Tests: 1 - Portfolio: 2

Throughout my 5 years experience in various project I come across many problems at the Technical front. Then I learned solutions and grabbed different skills in PHP, WordPress and Networking also. I felt only knowing one programming language or with only 1 or 2 skills I could not be a good programmer. So I started learning different programming languages as well as networking, which paved the way for an excellent future and knowledge. Now I can develop Websites, APPS and software that vary from online to offline purposes, basic to high level software and simple website to eCommerce websites.

$6.11 /hr
0 hours