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Embedded Firmware Engineer

Sigma Design Bellevue, WA

Bellevue, WA

Today

$116 - $116/hr Contract Electrical Engineering Arm Cortex M Embedded C

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Job Description

The Embedded Firmware Engineer role is a contract-to-hire position supporting the development, debugging, and ongoing support of embedded firmware for new hardware products. This hybrid role is based in Bellevue, WA and emphasizes hands-on hardware bring-up, embedded C development, peripheral integration, and validation on microcontroller-based systems.

Key Responsibilities

Bring up and validate firmware on new hardware, including verifying power and clock operation, connecting and configuring debug interfaces, enabling peripherals, and establishing initial firmware functionality.
Develop, integrate, and debug embedded C firmware for 32-bit ARM Cortex-M-class microcontrollers and similar architectures.
Configure and communicate with companion integrated circuits and peripherals using I2C, SPI, UART, and other standard communication interfaces.
Develop and debug USB-C and USB Power Delivery functionality, including power negotiation, source/sink roles, and fault handling.
Perform bench-level debugging with oscilloscopes, multimeters, logic/protocol analyzers, SWD/JTAG debuggers, and UART logging.
Analyze schematics, datasheets, register maps, and technical documentation to configure hardware devices and troubleshoot system-level issues.
Collaborate with hardware engineers to isolate and resolve hardware versus firmware issues during board bring-up and product development.
Develop and maintain board support packages, peripheral configurations, and required firmware integrations.
Support firmware update and bootloader functionality, including development and deployment of firmware update images.
Develop or support firmware for power-path and regulator control, including voltage monitoring, fault detection and recovery, enable sequencing, and related power-management functions.
Document firmware configurations, implementation details, debugging activities, and design decisions to support product development and ongoing maintenance.
Use version control and established software development practices to maintain firmware source code and support collaborative development.
Support firmware integration, testing, troubleshooting, and verification throughout the product development lifecycle.
Collaborate with engineering and cross-functional teams to identify technical issues, develop solutions, and support successful product development and production.
Follow Business Technology policies to protect sensitive data and reduce information security occurrences.

Required Qualifications

Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or an equivalent technical discipline required.
Minimum of 5 years of relevant experience developing embedded firmware or equivalent engineering experience preferred.
Strong proficiency in embedded C development for 32-bit microcontrollers, including interrupts, register-level peripheral programming, and development within flash and RAM constraints.
Working knowledge of USB-C and USB Power Delivery concepts, including source/sink/dual-role behavior and power contract negotiation.
Experience with I2C, SPI, UART, and other embedded communication interfaces, including device configuration and debugging.
Hands-on experience with hardware bring-up, including taking new boards from initial power-on through functional firmware or debugging firmware against physical hardware.
Strong ability to interpret schematics, datasheets, register tables, and hardware specifications to configure and troubleshoot embedded devices.
Proficiency using standard embedded hardware debugging tools, including oscilloscopes, logic/protocol analyzers, multimeters, and SWD/JTAG debuggers.
Experience using Git or similar version-control systems.

Tools and Technologies

Embedded C, ARM Cortex-M, 32-bit microcontrollers
I2C, SPI, UART
USB-C, USB Power Delivery, power negotiation
SWD, JTAG
Oscilloscopes, multimeters, logic/protocol analyzers, UART logging
Git, bootloader, DFU
Microcontroller SDKs, IDE, middleware, board support package (BSP)
Power-path, regulator control, power-management firmware, voltage monitoring, fault detection/recovery, enable sequencing

Contract Logistics

Location: Bellevue, WA (hybrid)
Job type: Contract
Schedule on contract: Monday to Friday, day shift (hybrid, 3 days onsite)

Compensation

USD 116.00 per hour
The hourly range is an estimate based on factors including experience, education, training, skills, and business considerations; actual compensation may vary based on candidate qualifications and alignment with the role.

Benefits While on Contract

Multiple options for medical insurance and dental insurance including some with FSA and HSA
401(k) with up to 4% company match
15-days of accrued PTO and 9 company paid holidays
Quarterly bonus program
Voluntary benefits: vision, long-term disability, and life insurance

Compliance Requirements

ITAR: Permanent resident of the United States (“U.S. person” as defined by ITAR)
Background: Pass a post-offer background verification

Work Environment

Standard office environment with normal amounts of office-related conditions.
Occasionally may be required to work in environmental conditions that emulate typical user environments to facilitate design testing and validation.
Occasionally may be required to travel as required to other facilities, clients, or suppliers.

Additional Preferred Background

Experience with microcontroller SDKs, IDEs, middleware, and board support package development preferred.
Experience with firmware update mechanisms and bootloaders, including DFU or equivalent processes, preferred.
Experience with power-path, regulator, or power-management firmware, including voltage monitoring, fault detection/recovery, and sequencing preferred.
Experience with USB subsystems and related technologies such as hubs, alternate modes, signal conditioning devices, or related USB peripherals preferred.
Experience with embedded software CI/build automation preferred.
Familiarity with USB-IF requirements, USB-C specifications, or USB Power Delivery compliance testing preferred.

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