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# Firmware Engineer III

- **Company:** Fluxergy Inc
- **Location:** Irvine, CA, United States
- **Experience:** Expert
- **Salary:** $120,000.0 - $135,000.0
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Code Review, Communications Protocols, Software Debugging, Linux on Embedded Systems, Firmware, Real-Time Operating Systems, Data Driven Tests, Systems Integration, Universal Asynchronous Receiver/Transmitter, Serial Peripheral Interface, Yocto
- **Published:** October 12, 2026
- **Apply:** https://www.juju.com/job/16_8962d0226

## About the Role

* 5+ years developing and releasing firmware for embedded or IoT devices
 * Familiarity with embedded Linux, Yocto, and at least one RTOS
 * Proficiency in C (C98) and C++ (C++11)
 * Experience with bring-up, verification, and troubleshooting of embedded systems
 * Ability to design and improve communication protocols like UART, SPI, and I2C
 * Willingness to experiment, iterate, and apply quantitative analysis to improve systems
 * Ability to work effectively across teams and clearly document and share work
 * Comfort navigating ambiguity and tackling unforeseen challenges in a system built from the ground up
 * Background in medical devices or similar industries is highly valued

Strong plus if you:

 * Have worked on an FDA regulated project
 * Are familiar with safety critical design processes and controls
 * Ability to read schematics

## Description

We're looking for an engineer who's ready to level up-not just in skill, but in impact. This role is built for someone who enjoys solving complex, not-fully-defined problems and wants to play an active part in shaping the product. You'll be working on a system that's evolving in real time, where your ideas and contributions directly influence what gets built and how it performs.

You thrive in collaborative environments where ownership is shared, ideas are challenged, and progress happens as a team. You're naturally curious, comfortable with ambiguity, and motivated by building something meaningful-not just maintaining it. If you enjoy turning complexity into clarity and want to grow alongside a team tackling hard problems together, you'll feel right at home here.

Team culture: - Positive - Proactive - Accountable - Team oriented - Continuous learner - Great communicator - Build strong working relationships - Contribute to a productive team culture What You Will Do

 * Develop, test, and release firmware for embedded and IoT-based systems
 * Ensure firmware reliability, performance, and quality across all stages of development
 * Bring up, verify, and debug new hardware systems, including the Fluxergy Analyzer
 * Collaborate with cross-functional teams to support system integration and troubleshoot issues
 * Identify, analyze, and resolve bugs or system-level challenges as they arise
 * Design and improve intra-device communication interfaces (UART, SPI, I2C)
 * Explore and implement new methodologies to enhance existing features, backed by data-driven analysis
 * Participate in code reviews across teams and contribute to engineering best practices
 * Create and maintain clear, thorough technical documentation
 * Build internal tools to support development, testing, and team efficiency
 * Be an awesome team member (see team culture bullets above).