Dear Sir.
How do you do.
I have read your job description and now very excited.
I have worked in embedded development for 7+ years.
I have strong skills in C/C++ languages and embedded firmware programmings.
Also I have an experience of developing SmartCard OS.
I've developed many products base on PIC, AVR, ARM7, ARM9, MIPS.
I have full environment to do this job.
If you give me this task, I shall do my best.
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I need the upfront with $75,
At the first step, I'll make the schematic and the PCB and send to you.
Then I'll need $200.
And on whole completion, I'll receive the remain amounts.
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Best regards.