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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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Richard Martin

Richard Martin

QA Test Engineer / Security Expert - CISSP, CEH

United Kingdom - Tests: 2

I have over 8 years experience in software testing and systems administration. I'm skilled in Linux application testing, white/black box testing, penetration testing, mobile app testing (Android & iOS) and load testing. All test cases, steps and reports are fully documented for client review. I have tested web applications for the top 3 technology companies in Silicon Valley. Current available test rig: OSX 10.9.2, Win 8, Win7, Win Vista, Win XP, IPhone 7.1.1, Fedora, PCLinuxOS, CentOS, Ubuntu, Samsung Galaxy Tab, IPad, IPad mini

100% Job Success
$20.00 /hr
3 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

Hans W.

Hans W.

Senior System Engineer

United States - Tests: 2

Accomplished System Administrator with 16 years of experience in research and instructional computing support. Comprehensive experience with Linux, Windows and Solaris. Specialties * Enterprise System Administration * Storage Management * Network Engineering * Datacenter Operations

100% Job Success
$44.44 /hr
679 hours

Stanislav Kotov

Stanislav Kotov

Network System Engineer/System Administrator - FreeBSD/Linux/Solaris

Russia - Tests: 9

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
13 hours

Nevin Maurice

Nevin Maurice

Security Specialist/Technical Writer

Canada - Portfolio: 4

14+ years experience in the field of Information Technology. 11 years specifically in IT Security, Specialized skills in researching, analyzing, and evaluating large networks, Extensive experience in designing technical architectures, and planning implementations using all phases of the SDLC methodology and ITIL framework, ITIL V3 Certified. Experienced in evaluating/analyzing security products/solutions that best fit an environment, Experienced technical writer (concept of operations, operational procedures, IT operations, installation/implementation procedures, user guides/manuals, Test plans, STIG’s, Identity & Access Management architectures, technical standards and procedures, technical architectures, perimeter security architectures, and detailed designs) Experienced in delivering technical training, delivering presentations

$50.00 /hr
2 hours

Jorge Lopez

Jorge Lopez

Ethical Hacker and Digital Forensic Investigator

Mexico - Tests: 4

For the past seven years, I have been learning about the information security world, working as an CEH (Certified Ethical Hacker). With some of my co-workers, i have participated in a lot of projects, strictly focused on Information Security. Also, as we evolve and grow in this area, we have trained ourselves in Forensics Sciences, attending clients who need to know what happened after a contingency. I consider myself a self-taught person that likes to grow and that is not afraid of challenges or difficult cases. At this moment my priority is to teach and so much to share the little knowledge I have gained over the years, as well as learn from those who have traveled a different path and with this keep on growing.

$111.11 /hr
0 hours

Mukul Dharwadkar

Mukul Dharwadkar Agency Contractor

Highly Experienced IT pro

United States - Tests: 7 - Portfolio: 1

Highly experienced professional with a lot of experience in managing critical projects both from a process perspective and technically. Over 14 years of solid technical background in Linux / Unix environment running Apache/Nginx web servers Apache Tomcat servers Apache Cassandra Hadoop Mysql DB Perl/Python/Shell Scripting Magento, Joomla, Drupal, Wordpress hosting ISPConfig, cPanel, zPanel, Plesk installation. Also have extensive experience in managing a Windows based environment. I also have a lot of experience in Software testing / QA and security testing.

Associated with: Dharwadkar Corp

100% Job Success
$44.44 /hr
119 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

David Marcus

David Marcus

Professional Transcriber and Journalist

South Africa - Tests: 11 - Portfolio: 1

Journalist; Transcriber, Subtitles and Travel Planning. US ENGLISH SPELLING: 1st place out of over half a million test takers! 85 Words Per Minute, 100% Accuracy. My Travel Addiction: I have travelled overland by: Public Transport Motorcycle 4x4 Vehicle Through 84 Countries over the last 20 years of my travelling adult life. I have met many interesting people during these adventures and have acquired insight into how the world works. For 2 years I have specialized in transcribing, which I do while travelling, and have acquired knowledge in many different areas, as I prefer to do academic research interviews. All of my clients are extremely satisfied with the quality of my work.

Groups: Microsoft Certified Professionals

100% Job Success
$44.44 /hr
67 hours

Hakimuddin G.

Hakimuddin G.

Penetration Tester | Ethical Hacker | SQL Injection | XSS Tester

Kuwait - Tests: 9 - Portfolio: 18

IT Security Consultant providing Consistent, Timely, and Cost-Effective IT Security Services. "" ### Professional Security Services ### # Web Application/SaaS Security Testing and Defense (sql injection, cross site scripting) # Penetration Testing & Ethical Hacking # Vulnerability Assessment & Network Auditing # Implementation and auditing of various security compliance(ISO 27001, NIST, PCI-DSS) # Protection of hacked websites and servers, cloud security. # Security Testing Mobile Apps, Chrome Apps, Salesforce AppExchange Business Apps , RESTful Applications and APIs # Security Awareness - On Demand Phishing for Organizations. ### Value Added Services ### # Debrief with the client at the conclusion of each engagement. # Research and provide recommendations for continuous improvement. # Knowledge sharing. ### Certifications ### CISM,CISSP,Certified Ethical Hacker, ISO27001, Security+ ### Hands on Experience ### Web applications :- Wordpress, Joomla, Drupal, Network :- Cisco, Linksys, Netgear, TP-Link, E-Commerce Security - OScommerce, prestashop, Magento Forums - MyBB, phpBB cPanel, WHMCS Linux, Windows, Ubuntu, CentOS etc. ### Tools ### Manual SQL Injection Testing, Business Logic vulnerability testing, Kali Linux, Burp Suite, Metasploit Pro

100% Job Success
$30.00 /hr
1,665 hours