Senior Firmware R&D Engineer

As part of your responsibilities, you will be:

• Own firmware for optical transceiver reference designs built around TFLN modulators
• Design, develop, and maintain embedded firmware for both IMDD and Coherent optical transceivers
• Implement and optimize CMIS-compliant firmware stacks
• Develop drivers and communication stacks for I2C and I3C interfaces
• Interface with DSPs for signal processing, control, tuning, and monitoring
• Support high-speed optical modules > 1.6Tbps
• Bring up hardware and debug issues
• Collaborate closely with hardware, optical, and system teams
• Develop internal tools (CLI/GUI) for diagnostics and configuration
• Ensure firmware reliability, performance, and standards compliance
• Contribute to system architecture and next-gen platform development

Requirements

• Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field
• Strong experience in embedded firmware development (C/C++ and others)
• Hands-on experience with CMIS and I2C/I3C protocols
• Experience with QSFP, OSFP, or similar form factors MSA specifications
• Experience working with DSP-based systems
• Solid understanding of high-speed communication systems (>400Gbps)
• Strong debugging skills in lab environments

Preferred Qualifications

• Experience with TFLN, silicon photonics, or other advanced modulator technologies
• Background in coherent detection or PAM4 systems
• Experience building reference designs
• Experience developing GUI tools (Python, etc.)
• Familiarity with MDIO, SPI, or similar interfaces
• Experience with manufacturing test or automation

Key Skills

• Embedded systems & low-level programming
• High-speed interface protocols (I2C/I3C, CMIS)
• Optical transceiver experiences (QSFP/OSFP)
• DSP integration
• Debugging & system bring-up
• Tooling / GUI development

What Success Looks Like

• Early hardware becomes stable, reliable, and production-ready
• Firmware becomes a reference platform others build on
• Complex cross-domain problems (firmware + hardware + optics) are solved quickly
• System performance is pushed beyond conventional solutions

Benefits

• Competitive market-based compensation and benefits
• Professional growth and mentorship opportunities