Motrex LLC · Alpharetta, GA

Salary
Posted
Jul 13, 2026
Location
Alpharetta, GA
Last confirmed open
Jul 21, 2026

What this job asks for AI summary

An embedded firmware engineering role focused on a CANOPEN-based platform for battery energy storage and industrial applications. Day-to-day work spans writing and optimizing C firmware for microcontrollers, supporting IoT communication protocols and wireless technologies, building simulators and test harnesses in C, Python, and C#, and producing engineering documentation from requirements through release. The role bridges software and systems engineering teams and requires on-site presence in Alpharetta, Georgia.

Mid level · 4+ years · Atlanta-Sandy Springs-Alpharetta, GA · Bachelor's required · Full-time

Must have (10)
C · 4+ yrsPythonCANopenCANSPII2CUARTRTOSGitwireless communications
Nice to have (6)
C#.NETWPF or WinuiFreeRTOS, Zephyr or ThreadxBLEWiFi

“or” means any one of them counts — you don't need all of them.

We read this from the posting text with AI. Skim the description below before ruling yourself out.

How this req sits in the market our data

Roughly 30 people in the Atlanta-Sandy Springs-Alpharetta, GA area plausibly meet what this posting asks for (software developers). range 6–45

Applicant volume Light — Few people clear these requirements, so an application that does clear them gets looked at. Worth applying to even if you miss a nice-to-have.

What gives you an edge
I2C2%SPI3%UART3%RTOS6%

Rare in this occupation — lead with these, and say what you built with them.

What won't set you apart
Python51%

Most people in this occupation already list these. Still required — just not what gets you shortlisted.

What the occupation pays Median $135,884 (middle half $106,941–$167,811).

Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.

Why we read it this way (7)

The role is titled 'Firmware Engineer' with no seniority modifier in the title, hence advertised seniority is Unspecified. The 4+ years requirement and scope (contributing to a team's stack, not setting org-wide direction) support a Mid-level classification.

The JD requires a BS or MS degree with no 'or equivalent experience' escape clause, so Bachelors is set as the minimum hard degree requirement.

CANopen is listed in the required qualifications as 'CANOPEN software stack or similar embedded platform stacks'; the 'or similar' qualifier means the specific stack is interchangeable, but experience with an embedded communication stack is a hard gate.

Wireless communications is listed as a required gate ('Experience working with Wireless communications') but no specific protocol is named there; specific protocols (LTE, BLE, WiFi, GNSS, NB-IoT) appear in the responsibilities narrative rather than a requirements gate, so only the general wireless requirement is marked required.

C# (.NET, WPF/WinUI) and specific RTOS platforms (FreeRTOS, Zephyr, ThreadX) appear explicitly under the 'Nice to have' section.

BLE and WiFi appear under 'Nice to have' as 'IoT experience with WiFi, BLE and Cellular Devices.'

No compensation figures are provided in the posting.

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