Chorus · 6 days ago
Principal Embedded Engineer
Concord, MA
Full-time
Onsite
Lead/Staff
10+ years expChorus is a dynamic and innovative technology start-up committed to solving significant challenges facing our world. They are seeking a highly skilled Principal Embedded Engineer to lead the development and architecture of embedded firmware for IoT devices, collaborating closely with hardware engineers to ensure seamless integration and validation of new designs.
Health CareInformation TechnologymHealthNanotechnology
Responsibilities
Architect and design firmware for multiprocessor IoT and sensor system
Develop robust, real-time embedded software architectures using FreeRTOS or equivalent or bare-metal implementations
Lead the bring-up of new hardware platforms, including debugging bootloader, microcontroller peripherals
Implement and optimize low-level drivers for UART, I2C, SPI, GPIO, ADCs, and other peripherals
Collaborate with electrical engineers on design of product electronics
Utilize debugging tools (JTAG, SWD, oscilloscopes, logic analyzers) to diagnose and resolve firmware and hardware issues
Integrate firmware with wireless communication stacks (BLE, Wi-Fi, NFC etc.) as needed
Establish best practices for Firmware development & Testing
Collaborate with the DevSecOps team to optimize the CI/CD pipelines for embedded software
Participate in Firmware Risk Assessment and Controls working closely with the Cybersecurity team
Mentor team members and provide technical leadership in firmware design decisions
Qualification
Required
Bachelor's degree in Software or Computer Science Engineering or relevant field (software/firmware/EE preferred)
10+ years of experience in embedded firmware development, with at least 5 years working with STM and ESP microcontrollers
Deep knowledge of C/C++ for embedded systems
Strong experience in hardware bring-up, debugging, and validation
Strong electro-mechanical integration knowledge with firmware
Expertise in peripheral interfaces (UART, I2C, SPI, GPIO, PWM, ADC)
Familiarity with board design, PCB layout constraints, and signal integrity analysis
Hands-on experience with hardware debugging tools (oscilloscopes, logic analyzers, multimeters, etc.)
Experience with RTOS (FreeRTOS or similar)
Knowledge of bootloaders, firmware updates (OTA), and security best practices
Strong analytical and problem-solving skills with a proactive mindset
Experience with version control systems (Git) and CI/CD for embedded development
Preferred
Experience with wireless protocols (BLE, Wi-Fi, NFC etc.)
Knowledge of device drivers and kernel-level programming
Familiarity with Flatbuffers, COBS encoding, and other efficient data serialization methods
Prior work in IoT product development and SaaS-based device monitoring solutions
Understanding of compliance testing (EMC, FCC, CE, UL) and regulatory considerations
Experience across all phases of the program development lifecycle, from requirements, capture through design, implementation, and test
Experienced with FMEAs and developing control techniques to mitigate risks
Self-motivated and demonstrated ability to lead process improvement activities
Company
Chorus
Chorus creates and develops solution to lessen and eliminate airborne pathogens.
11-50 employees
H1B Sponsorship
Chorus has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
Funding
Current Stage
Early StageLeadership Team
Kelsey Ganon
Director Marketing Communications
Recent News
meetchorus.com
2025-06-19
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2024-12-06
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