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Convert a string of integers to a double. Implement round robin operating system and how this is implemented using stacks. Build an LED system's architecture to do a light show. If you could run the company, what would you do?
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Embedded Firmware Engineer

Interviewed at Synapse Product Development

4.4★
Jul 27, 2020

Convert a string of integers to a double. Implement round robin operating system and how this is implemented using stacks. Build an LED system's architecture to do a light show. If you could run the company, what would you do?

There's not a particular question that's most difficult. I'd recommend being pretty up on RTOS and recent embedded microcontrollers. In my case I feel I am rather up on C, C++, board design and bringup, hw tools, author-level linker and debugger tech, fair RTOS understanding at a kernel level, register-level ARM and AVR understanding, and decades of UNIX experience, and those didn't get me to "yes", despite all those fitting the job description. So you might wish to set expectations that a whole constellation of judgement may be at play and a good technical show may be just half of the requirements. I really don't know why I wasn't selected, unfortunately, so my guess is in a market like SF or Seattle one gets a pretty sweet pool from which to choose.
avatar

Senior Embedded/Firmware Software Engineer

Interviewed at Synapse Product Development

4.4★
Nov 26, 2014

There's not a particular question that's most difficult. I'd recommend being pretty up on RTOS and recent embedded microcontrollers. In my case I feel I am rather up on C, C++, board design and bringup, hw tools, author-level linker and debugger tech, fair RTOS understanding at a kernel level, register-level ARM and AVR understanding, and decades of UNIX experience, and those didn't get me to "yes", despite all those fitting the job description. So you might wish to set expectations that a whole constellation of judgement may be at play and a good technical show may be just half of the requirements. I really don't know why I wasn't selected, unfortunately, so my guess is in a market like SF or Seattle one gets a pretty sweet pool from which to choose.

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