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# Principal Embedded Software Engineer

- **Company:** Lumex Talent
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Booting (BIOS), C++ (Programming Language), Embedded Operating Systems, Embedded Software, Fault Tolerance, Firmware, FreeRTOS, Real-Time Operating Systems, Remote Infrastructure Management, Bare Metal, U-Boot
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_5265329defd4855406eb70362f3d5da7

## About the Role

* Expert-Level C/C++: 8+ years of hands-on experience in bare-metal or near-bare-metal programming.
 * Architecture Pedigree: A proven track record of architecting full firmware platforms across multiple shipped commercial products.
 * Real-World Fleet Experience: Experience managing connected devices in the field, including fault-tolerant recovery mechanisms and secure boot.
 * Modern RTOS Expertise: Deep familiarity with FreeRTOS, Zephyr, or similar embedded operating systems.
 * Hardware Fluency: Comfortable with PWM, ADC, SPI, CAN, and using logic analyzers/

TECHNICAL STACK

Embedded C/C++ FreeRTOS / Zephyr Bootloaders CAN / SPI / ADC / PWM OTA Updates

## Description

They are looking for a Principal Engineer to own the technical vision and architecture of our embedded firmware platform. This is a critical leadership hire. You will be the person who takes a high-potential prototype and transforms it into a rock-solid, production-ready system capable of powering global energy deployments., * Architecture Ownership: Define and own the long-term roadmap for our embedded platform, covering RTOS, HAL, bootloaders, telemetry pipelines, and core device infrastructure.

 * From Prototype to Production: Conduct independent assessments of existing platforms to transition hardware from engineering prototypes to field-hardened.
 * Technical Leadership: Direct the work of a team of embedded engineers, establishing coding standards, architectural best practices, and driving rigorous design reviews.
 * Fleet Management: Build and own robust Over-the-Air (OTA) firmware upgrade systems and remote management tooling for a massive fleet of connected power electronics.
 * Systems Thinking: Act as the primary technical escalation point, solving complex integration issues that span from low-level silicon to full product architecture.