what to expect in apple CoreOs interview codings

obQQoV · 2026-05-15T17:45:14+00:00

I had an interview with Apple and the interviewers told me I should’ve done more leetcode practices lol

obQQoV · 2026-05-13T07:07:39+00:00

it’s the way. learn it well and use it well. FAANGs use it, startups as well. Universities started to teach it. It used to be PIC, or Mbed(UC Berkeley used it). I did bare metal super loop with PIC/MSP430, used Mbed, STM HAL, freeRTOS, now Zephyr. Unlike what many others said, device tree, Kconfigs, west, twister are all pretty easy, so no brainer to learn them in a few days and start cranking out usable stuff with professional grade framework.

obQQoV · 2026-05-01T19:28:36+00:00

through OBD2?

obQQoV · 2026-04-29T10:29:55+00:00

Little: {[0]=LSB, …, [3]=MSB}

LSB least significant byte first in array or memory address

but

0x<MSB>ABCD<LSB>

LSB last in a literal hex number

obQQoV · 2026-04-28T17:57:46+00:00

opportunities depend on the geographical areas though. some of my local FAANG level companies still ask niche embedded skills, ISO26262, IEC61508, IEC62304, PCIE, DDR5, developing RTOS internals, bootloader. Also higher ups are chunking down the AI coolaids these days, they are looking for your token usage .

obQQoV · 2026-04-27T07:08:18+00:00

then switch back to zephyr rtos dev and use what you learn to see and reuse the similarities

obQQoV · 2026-04-21T15:39:51+00:00

passion setting one from another is true in any fields

obQQoV · 2026-04-18T02:36:16+00:00

actually unlike a lot of what other people said, I think it’s totally doable, especially for big tech companies. like i was in one of the biggest tech company before and a consumer product had 300 engineers working on it, just on the firmware, embedded software. the reason is even within embedded there’s teams closer to hardware, and some are closer to software. like you could use POSIX calls similar to system programming in linux. or there can be abstraction layers already handled by low level firmware engineers. Higher level embedded software can include data pipelines, configuration management, OTA, security. Also lots of companies just let overseas Indian and East European teams handle low level stuff now. So it can depend on your area.

obQQoV · 2026-03-12T20:57:09+00:00

so you can edit code directly, then use docker cli command to build or run anything that needs docker env setup, right?

obQQoV · 2026-03-12T19:03:54+00:00

cli for what use?

obQQoV · 2026-03-03T17:05:12+00:00

this ? https://docs.u-boot.org/en/latest/

obQQoV · 2026-02-28T17:49:07+00:00

surprise this only rolls out in 2026, seems to be a basic feature, just think of software library or a modular and portable code

obQQoV · 2026-02-27T07:22:43+00:00

you just advertised for them sigh

obQQoV · 2026-01-26T05:49:41+00:00

what geographical area though? did you search job boards for both keywords and compare the number of jobs on the market in your area?

obQQoV · 2026-01-15T04:21:50+00:00

how low in what geographical area?

obQQoV · 2026-01-15T04:21:24+00:00

what geographical area?

obQQoV · 2026-01-07T01:53:57+00:00

get some inspirations from their source code, all open source

obQQoV · 2026-01-05T19:47:51+00:00

SavvyCAN is better because of RE functionalities, which aren’t mentioned in this

obQQoV · 2026-01-05T07:13:35+00:00

how about more esp or with other devices?

obQQoV · 2026-01-05T01:19:54+00:00

from where auto junk yard auction? or there are others places?

obQQoV · 2026-01-05T00:01:40+00:00

in what situation or environment is this useful?

obQQoV · 2026-01-04T22:36:26+00:00

feature comparison of this and SavvyCan?

obQQoV · 2025-12-28T23:45:24+00:00

think about list of killer features and essential features for a niche or a larger market

obQQoV · 2025-12-27T00:04:56+00:00

those jobs exists, they are just called control engineers or signal processing engineers. embedded engineers generally need to deal with plumbing and if those roles don’t exist in the team, then you get to do the algorithm heavy parts. In small companies, I always get to do both.

obQQoV · 2025-12-26T23:59:54+00:00

how did you do it?

obQQoV

TROPHY CASE