Firmware Engineer III

About Us
Fluxergy is a rapidly growing in vitro diagnostics company innovating on the cutting-edge of laboratory testing. We’re developing the first and only multi-modal point-of-care platform that enables molecular, clinical chemistry, immunoassay, and hematology testing on the same system.
Our platform spans many markets including the clinical, veterinary, and food safety industries. We are seeking self-motivated problem solvers who are excited to help decentralize traditional laboratory infrastructure.
At the core of our company’s identity is a strong foundation in engineering. We take great pride in our commitment to critical thinking and pragmatic problem-solving through a modular and systemic perspective. We hold the conviction that transparent communication, coupled with the flexibility to adjust to evolving scenarios and the willingness to venture beyond familiar territories, is crucial to both our success and yours.
Our product: https://vimeo.com/176673475

About the Role 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

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). 

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

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