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# Firmware Engineer

- **Company:** Lumentum
- **Location:** San Jose, CA, United States
- **Experience:** Experienced
- **Salary:** $124,800.0
- **Contract:** Permanent contract
- **Skills:** ARM Architecture, Computer Engineering, Software Debugging, Embedded Software, Ethernet, Firmware, FreeRTOS, Real-Time Operating Systems, System Testing, Universal Asynchronous Receiver/Transmitter, USB, Serial Peripheral Interface, PIC Microcontroller, Git, Information Technology, Bare Metal, Software Version Control
- **Published:** September 23, 2026
- **Apply:** https://lumentum.wd5.myworkdayjobs.com/LITE/job/USA---CA---San-Jose-Ridder/Firmware-Engineer_20261253

## About the Role

Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field., * 3+ years of experience in embedded firmware development, preferably in the optical networking or telecommunications industry.

 * Proficiency in C/C++ programming for embedded systems.
 * Experience with bare-metal and real-time operating systems such as FreeRTOS, or similar.
 * Strong understanding of microcontroller architectures (e.g., ARM Cortex-M/R based) and peripheral interfaces (I2C, SPI, UART, USB, Ethernet).
 * Familiarity with hardware/software co-design and debugging tools (oscilloscopes, logic analyzers, in-circuit debuggers).
 * Experience with version control systems (e.g., Git).
 * Knowledge of digital signal processing (DSP) or control systems is a plus.
 * Excellent problem-solving skills and attention to detail.
 * Ability to work independently and as part of a collaborative team.
 * Strong written and verbal communication skills.

## Description

As a Firmware Engineer at Lumentum Operations LLC, you will be instrumental in developing, testing, and maintaining embedded software for our cutting-edge optical products. This role involves working across the full firmware development lifecycle to ensure high-performance and reliable operation of our devices.

What You'll Be Doing

 * Design, develop, and debug firmware for new and existing optical modules, transceivers, and other Lumentum products.
 * Implement embedded software for microcontrollers and other embedded systems, focusing on real-time operating systems and internal operation systems.
 * Develop and execute comprehensive unit, integration, and system tests to ensure firmware quality and robustness.
 * Work closely with hardware engineers during the design phase to define firmware requirements and interfaces.
 * Work closely with manufacturing and test engineering teams to support product bring-up, debug, and production ramp-up.
 * Contribute to architecture discussions and design reviews, providing expert input on firmware solutions.
 * Analyze and resolve complex firmware issues, including performance bottlenecks and stability problems.
 * Document firmware designs, specifications, and test plans to maintain clear and concise records.
 * Stay current with industry trends and emerging technologies in embedded systems and optical networking.


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