Profile image of donhuan
Member since February 21, 2011
1 Recommendations


Online Offline
Information Security, Ethical Hacker, Penetration Testing, Network Security, Computer Security, Network Design, Network Administration, Software Development, Web Development.
$9 USD/hr
18 reviews
  • 73%Jobs Completed
  • 100%On Budget
  • 99%On Time
  • 14%Repeat Hire Rate


Recent Reviews


System penetration testing

Dec 2016

I have a big responsibility in protecting the information system (computer network, Voice IP network, data). I'm a leader of a security group who have to implement solutions to protect our IT system, such as: update devices, implement security configuration, do penetration testing all IT devices in our IT system.

Application Security

May 2014 - Dec 2016 (2 years)

In this period of time, I do application penetration. The purpose of my work is to find security vulnerabilities in applications (desktop applications and web applications) and fix them.

Network Security

Sep 2012 - Apr 2014 (1 year)

I worked as a security expert who implemented solutions to protect the computer network of my organization (install Firwall, IPS, IDS, Antivirus, Security Policies, NAC System, CA System). I also do task of a network administrator.

Network Administration

Oct 2011 - Aug 2012 (10 months)

In this period of time, I worked as a network administrator. In more detail, I install Servers (AD, DC, Database Server, Web Server, File Server, Proxy Server, Mail Server), config network devices (Cisco Router, Cisco Switch, Load Balancing devices, Wifi Access Point) and monitor the status of all devices in our network.

Web Development

Jul 2010 - Aug 2012 (2 years)

In these years, I created many websites. The languages that I used were [login to view URL], PHP, HMTL, Javascript, CSS. Those website are based on wordpress, Yii.


May 2010 - Oct 2011 (1 year)

Solve Complex problems in Algorithm.

Software Development

Jun 2008 - Jul 2010 (2 years)

In this year, I worked as a coder. I wrote a lot of software and tools in .NET (C#, VB NET), C, C++.



2005 - 2010 (5 years)


First_Prize (2008)

Vietnam Association for Math Processing & Ministry of Education and Training


Second_Prize (2009)

Vietnam Association for Information Processing & Ministry of Education and Training

c++, Algorithm

Second_Prize (2010)

Vietnam Association for Information Processing & Ministry of Education and Training

c++, Algorithm.

CCNA (Cisco Certified Network Associate) (2013)


CCNA (Cisco Certified Network Associate) is an information technology (IT) certification from Cisco. CCNA certification is an associate-level Cisco Career certification. ... Passing the ICND1 grants one the Cisco Certified Entry Networking Technician (CCENT) certification.

Cisco Certified Network Professional (CCNP) (2014)


Cisco Certified Network Professional (CCNP) is an intermediate-level certification in the Cisco certified professional program. This certification is aimed at full-time network or system administrators, or those who work with local and/or wide-area network (LAN/WAN)infrastructure.

Certified Ethical Hacker (CEH) (2015)


Certified Ethical Hacker (CEH) is a qualification obtained by assessing the security of computer systems, using penetration testing techniques.

ACM ICPC (International Collegiate Programming Contest) (2010)

ACM (Association for Computing Machinery)

The ACM ICPC (International Collegiate Programming Contest) is a sport programming world championship held annually


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