EXPLORE

(25 reviews)

Duong N.

@donhuan

5.0

5.6

100%

Information Security, C/C++, .NET, PHP, Python

$9 USD / Hour

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Vietnam (10:33 AM)

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Joined on February 21, 2011

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1 Recommendation

$9 USD / Hour

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Information Security, Ethical Hacker, Penetration Testing, Network Security, Computer Security, Network Design, Network Administration, Software Development, Web Development.

Verifications

On time

73%

On budget

74%

Accept rate

87%

Repeat hire rate

22%

See all PHP Developers in Vietnam

Portfolio

This is a website for tourists and tourism manager.

Tourism Webiste

This software is used to predict stock exchange in Vietnam (VN-Index). I used neural network method which has 3 levels, many values of VN-Index and a lot of relation on Vietnam stock market. Furthermore, it can calculate the error value of prediction and may other valuable results.

Stock Prediction Software

My software can convert all audio types to other. I use "Ffmpeg" library (a famous library in processing Audio Video data) to produce it.

Audio Converter

SIP (Session Initiation Protocol ) is a protocol that control practical layer to create, maintain and terminate multimedia sessions. VoIP (Voice over Internet Protocol) is a voice transfer network based on VoIP. VoIP has been popular today because it has some functions and utilities to decrease beginning investment cost and is easier to install in advanced system. Asterisk is a opensource product. It is provided freely to design VoIP. My project is similar to a VoIP product.

Voice over IP Network Software

My software can recognize handwritten characters. This include letters and numbers. In my software, I use Neural M Network.

Handwriting Recognition Software

My software can detect Faces in Image. In Image, maybe there are many faces or there is no face, my software can work quite exactly. In my software, i combinate some methods in recognizing technologies to match a good result

Face recognition Software

Tourism Webiste

Stock Prediction Software

Audio Converter

Voice over IP Network Software

Handwriting Recognition Software

Face recognition Software

5.0 · 25 Reviews

25 Reviews

Customize Pi Operating System

He is a very talented developer. He works diligently and gets his work done on time. He also has great communication skills and keeps you updated regularly throughout the project. Highly Recommended!

Raspberry Pi

Integrate 3CX with Zoho Desk

He is very knowledgeable in many different technologies. I work with him on a variety of projects. Highly recommended!

PHP

Zoho

API

Build SOAP To Connect PHP/MySQL to QB Web Connector

He is a talented and dedicated developer. Highly recommended! [06 March, 2019] Very talented freelancer, highly recommended

PHP

Software Architecture

Intuit QuickBooks

MySQL

Raspberry Pi External USB Modem Configuration

He knows what he is doing. Solved many issues for us on this project. Will use again for phase 2 of project.

Linux

Raspberry Pi

Increase DataStore on VMware box Hard Drive already isntalled

If you read this review. Do not let Do's quiet way of chatting fool you. I have been in network for 20 years. I have hired many Engineers. I am an Engineer myself . We are extending our team and took a chance with Do. The project was harder than we both thought. I even loss faith and brought many other people to look at it. None of them! Could figure it out or do the job. Do was confident and knows what he knows. He is also personable and what we wanted most of all communication. Any good review would not give Do justice. He also helped us out with a very good client. --- I will be hiring him as much as I can .

Windows Server

VMware

Internet Security

System penetration testing

Dec, 2016 - Present

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9 years, 7 months

Tienphong

Dec, 2016 - Present

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9 years, 7 months

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.

Dec, 2016 - Present

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9 years, 7 months

VNPT

Sep, 2012 - Dec, 2016

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4 years, 3 months

Application Security

May, 2014 - Dec, 2016

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2 years, 7 months

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

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1 year, 7 months

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.

Sep, 2012 - Dec, 2016

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4 years, 3 months

Network Administration

Oct, 2011 - Aug, 2012

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10 months

NetSolution

Oct, 2011 - Aug, 2012

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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.

Oct, 2011 - Aug, 2012

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10 months

Truòng Dai hoc Bách Khoa Hànôi

2005 - 2010

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5 years

Vietnam

2005 - 2010

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5 years

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

2010

Certified Ethical Hacker (CEH)

2015

EC-Council

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

2015

Cisco Certified Network Professional (CCNP)

2014

Cisco

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.

2014

Basic Numeracy