Firmware Engineer - Optical Solutions

Molex is seeking a Firmware Engineer to join a multidisciplinary engineering team with responsibility for developing embedded software for next-generation optical transceivers.

You'll contribute to the design, implementation, and testing of firmware that controls high-speed photonic devices, ensuring performance, reliability, and compliance with industry standards.

S ome travel is expected in this role.

What You Will Do



* Develop and maintain embedded firmware for optical transceiver modules (QSFP-DD, OSFP, etc.)


* Implement I2C/MDIO communication protocols and monitor/control interfaces


* Collaborate with hardware, signal integrity, and test teams to validate firmware functionality


* Assist in debugging and troubleshooting firmware issues using logic analyzers, oscilloscopes, and protocol analyzers


* Support firmware integration with host systems and participate in interoperability testing


* Document firmware architecture, APIs, and test procedures

Who You Are (Basic Qualifications)



* Bachelor's degree in Electrical Engineering, Computer Engineering, or related field


* Solid understanding of embedded C/C++ programming


* Familiarity with microcontrollers, RTOS concepts, and low-level hardware interfaces


* Exposure to I2C, SPI, UART, or other serial communication protocols


* Basic knowledge of optical communication principles is a plus


* Strong problem-solving skills and eagerness to learn


* Excellent communication and teamwork abilities

For this role, we anticipate paying $80,000 - $130,000 per year.

This role is eligible for variable pay, issued as a monetary bonus or in another form.

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Our benefits plan includes - medical, dental, vision, flexi...