I'm Md. Waliul Islam Mondal. I am a freelance programmer.

I completed B.Sc. in Computer Science and Engineering (CSE) from Bangladesh University of Engineering and Technology (BUET) in 2005. Previously, I passed HSC from Dhaka College, Dhaka in 1999 and SSC from Pirgonj Govt. High School, Pirgonj, Rangpur in 1997.

Currently, I am working on VOIP projects. I have developed mobile dialer for Symbian (S60 2nd, 3rd and 5th edition), Android, Windows-Mobile and PC. I have also developed VPN server, SIP Proxy server and Balance server.
My symbian dialer and android dialer have embedded G729 converter, which makes my dialers support all S60 3rd and 5th edition handsets (If the handset doesn't support G729 codec, my dialer does the conversion). So, if you use my dialer, you don't have to install amr codec converter in your media gateway/asterisk. If you want, you can use my media-gateway and you don't need asterisk anymore.
If you use my voip solution, you will get all support you need to run your VOIP business in any country where VOIP is legal. My VPN and sip-server can handle 500 concurrent calls

Previously, I worked on mobile softwares like mobile bangla dictionary for j2me and android platform, mobile model tests and so on. For my mobile softwares, visit http://wap.opentechbd.com from your mobile. These mobile softwares are free.

To download bangla dictionary for android platform, visit http://market.android.com from your android-handset, search "bangla dictionary". Android-dictionary is not free.

I have also been working with DesignSoft, Hungary since 2003. I have developed microcontroller simulator and assembler for DesignSoft. My mcu-simulator and assemblers support nearly 500 models of microcontrollers including PIC (10xx, 12xx, 16xx, 18xx, 24xx and DSP series from MicroChip), 8051 series, ATTiny and Atmega series (Atmel), and ARM7 and ARM9 (Atmel).
My simulator can simulate SPI, USART, UART, CAN, ECAN, TIMERS, EXTERNAL INTERRUPTS, TWI, ADC, COMPARATOR and so on.

Previously, I worked with G5Tech, Dhaka on voip project for almost 2 years.

I have also worked with Airscanner, USA as freelance programmer for about two years. For Airscanner, I worked on security based software for windows mobile.

I have also worked with SDSL (Dhaka branch of Afrigis, South Africa) on mobile softwares for J2ME and SYMBIAN platform

I have also worked with Eyeball, Dhaka for almost 1 year.

I did my undergraduate thesis on Simulation and Animation of Communication Protocols under Shamsul Alam Sir ( Head of Department of CSE in 2005 ). In my thesis, I simulated several communication protocols ( Go Back N and Selective Repeat for Data Link Layer, Link State Routing and Distant Vector Routing for Network Layer ).