Firmware Development Engineer - Optoelectronics

Molex is seeking a Firmware Engineer to join their Optical Solutions business unit. In this role, you will develop embedded software for next-generation optical transceivers, contributing to the design, implementation, and testing of firmware that ensures performance and compliance with industry standards. Responsibilities 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 Skills Bachelor's degree in Electrical Engineering, Computer Engineering, Information Technology, or a related field preferred 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 Demonstrated problem-solving skills, curiosity, and a desire to grow professionally Excellent communication and teamwork abilities This role is not eligible for visa sponsorship Benefits Medical Dental Vision Flexible spending and health savings accounts Life insurance ADD Disability Retirement Paid vacation/time off Educational assistance Infertility assistance Paid parental leave Adoption assistance Company Overview Molex supplies electronic interconnect solutions and connectivity products for a broad range of industries. It is a sub-organization of Koch, Inc.. It was founded in 1938, and is headquartered in Lisle, Illinois, USA, with a workforce of 10001+ employees. Its website is