$112.2k - $185.15k
Salary: $112,200 - 185,150 per year Requirements: We require a Bachelor of Science degree from an accredited program in engineering, engineering technology, chemistry, physics, mathematics, data science, or computer scie…
Engineering & IT · St. Louis, MO
Embedded Engineer jobs in St. Louis, MO
Embedded engineers write the software that runs inside devices — from consumer gadgets to cars and medical equipment — working close to the hardware in C and C++ under tight resource limits.
168
Open roles today
$31–$77/hr
Typical pay range
$107k
Median, full-time
3
Fresh in this list
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01
Open embedded engineer roles
12 shown of 168 · sorted by freshness
$112k - $151.8k
Salary: $112,000 - 151,800 per year Requirements: We require a Bachelor of Science degree in Engineering, Engineering Technology, Computer Science, Data Science, Mathematics, Physics, Chemistry, or an equivalent non-U.S.…
The Firmware Engineer Intern is primarily responsible for providing technical excellence in designing, developing and testing firmware... ...system meets requirements. Use AI-assisted tools to support embedded firmware d…
If you are an engineering professional looking to make an impact in critical infrastructure while growing within a collaborative, project focused environment, Emerson has an exciting opportunity for you. Based at our St.…
Title: Chief Systems Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national secu…
Position Overview We are seeking a skilled Principal Firmware Engineer with specialized experience in developing firmware for active... ...This role involves designing, developing, testing, and optimizing embedded softwa…
thru the hard work and talent of the people on our team. Job Description We are seeking a results-driven Reliability Engineer to join our Engineering & Maintenance team to support the maintenance and reliability efforts…
Job Detail Organization: GeoAcuity Title: Systems Engineer Location: On-site — St. Louis, MO | DC Metro | Springfield, VA | Redlands, CAPosted: 2026-07-07 Application Deadline: Position Description: Systems Engineer GeoA…
Title : Principal Firmware Engineer - Implantable Medical Devices Location : St. Louis Park, MN Job Type : Permanent / Direct... .... As a senior technical leader, you will design and optimize embedded firmware for activ…
Title : Senior Software Engineer Location : St. Louis Park, MN | Hybrid Job Type : Permanent / Direct Hire Compensation :... ...implantable medical devices. This position requires a blend of embedded systems expertise, m…
Overview: We are seeking an experienced Senior Systems Engineer to support mission-critical geospatial and enterprise infrastructure environments. This position focuses on the design, integration, modernization, and sust…
Overview: We are looking for a Systems/DevOps Engineer to work on our Cloud Automation Advancements Team. Work hand-in-hand with technical and program management leadership to implement the next generation desktop and we…
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What embedded engineers earn in St. Louis
Hourly first — that's how the offer arrives
| Experience | Hourly | Annual, full-time |
|---|---|---|
| Entry level | $31–$43 | $64k–$90k |
| Mid level | $43–$60 | $90k–$124k |
| Senior | $58–$77 | $120k–$161k |
Adjusted for the St. Louis market from national ranges.
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What employers ask for
The skills these listings keep naming
C and C++Microcontrollers (ARM Cortex-M)RTOS (FreeRTOS, Zephyr)Hardware protocols (SPI, I2C, UART)Reading schematics and datasheetsDebugging with scopes and JTAGMemory and power constraintsRust or Python (a plus)Version control and CI for firmware
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Interview questions worth rehearsing
With the thing the interviewer is actually listening for
What does the volatile keyword do, and when do you need it?
Explain it prevents the compiler optimizing away reads/writes, with the classic cases: hardware registers and variables shared with ISRs. Precision matters here.
How do you debug a device that crashes intermittently in the field?
Talk about logging within constraints, watchdog data, reproducing environmental conditions, and instrumented builds. Field debugging method is a core competency.
Walk me through what happens from power-on to your main loop running.
Cover reset vector, startup code, memory initialization, and clock configuration. Comfort with the boot path signals genuine low-level experience.
How do you write an interrupt service routine safely?
Keep it short, defer work to the main loop or a task, protect shared data, and avoid blocking calls. Mention the race conditions you are preventing.
How do you handle a memory-constrained target — say 64KB of RAM?
Discuss static allocation, avoiding heap fragmentation, measuring stack usage, and linker-map analysis. Concrete numbers from a past project help.
How do you test firmware?
Unit tests off-target with mocked hardware, hardware-in-the-loop rigs, and on-target integration tests. Acknowledging what is hard to test is part of a good answer.
Tell me about a hardware/software interaction bug you solved.
The best stories involve a scope or logic analyzer and a datasheet detail everyone missed. Show the collaboration with hardware engineers.
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Resume tips that move the needle
For embedded engineers specifically — generic advice costs you here
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Name the microcontroller families, RTOSes, and protocols per project — embedded hiring screens on exact platform matches.
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Describe the products you shipped and their constraints (battery life achieved, memory footprint, certification requirements).
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Include debugging tooling experience — JTAG, oscilloscopes, logic analyzers — as it separates firmware engineers from application developers.
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Mention safety or regulatory work (MISRA, ISO 26262, FDA) if you have it; those doors are hard to open otherwise.
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Personal hardware projects with write-ups carry real weight in this field — link one if it is presentable.
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Where this role goes
Typical progression
01
Junior Embedded Engineer
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Embedded Engineer
03
Senior Embedded Engineer
04
Principal Firmware Engineer
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