Senior Firmware Engineer: Optical Transceivers for Datacenter

Flint Hills Resources; Allen (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical benefits

Dental & Vision

Health Savings Account

Life insurance

Retirement plan

Paid vacation/time off

Educational assistance

Parental leave

Job summary

Molex is seeking a highly skilled Senior Firmware Engineer to join our Optical Business Unit. This role delivers CMIS compliant firmware for next‑generation optical transceivers used in data centers and telecom markets.

You will collaborate with Product Management, Hardware, Operations and Field Application Engineering to drive development from concept to product. The ideal candidate has 5+ years in firmware design for communications, strong C/C++ and Python skills, and experience with RTOS or

Qualifications

• Bachelor’s degree in computer engineering and related fields
• 5+ years of experience in firmware design and development for communication products
• Proficiency in C/C++ and Python Programming
• Experience in bare-metal and RTOS based firmware development and optimization
• Strong understanding of bus protocols like I2C, I3C, SPI, PCIe, MDIO
• Hands-on experience with lab equipment like Oscilloscope, Signal Generators, OSA, VOA
• Knowledge about PID control loops involving DAC, ADC, TEC and PIC
• Experience with GIT Version Control System, CI/CD Pipelines and optical technologies is a plus

Responsibilities

• Design, Develop and Verify CMIS Compliant Firmware for Optical Transceivers
• Design, implement and calibrate control loops for electro-optical components
• Port, Integrate and Test DSP chip driver software on target platforms
• Ensure Product Performance, Reliability and Quality through Critical Code Reviews, Test Design and Analysis
• Support New Product Introduction (NPI) and Application Engineering teams in bringing products to the market
• Troubleshoot and resolve operational and customer issues by understanding the use cases, reproducing the issues in lab and implementing solutions
• Lead distributed design and development teams across multiple time zones

Skills

C/C++

Python

Firmware development

RTOS

Bare-metal

I2C

I3C

SPI

PCIe

MDIO

Lab equipment

PID control

GIT

CI/CD

DSP driver

Education

Bachelor's degree in Computer Engineering or related field

Tools

GIT

CI/CD Pipelines

Job description

Molex is seeking a highly skilled Senior Firmware Engineer to join our Optical Business Unit. This role delivers CMIS compliant firmware for next‑generation optical transceivers used in data centers and telecom markets.

You will collaborate with Product Management, Hardware, Operations and Field Application Engineering to drive development from concept to product. The ideal candidate has 5+ years in firmware design for communications, strong C/C++ and Python skills, and experience with RTOS or