Senior Firmware R&D Engineer
Summary
Develop embedded firmware for high-speed optical transceivers (>1.6Tbps) using C/C++, CMIS, I2C/I3C, and DSP integration for next-gen optical networking hardware.
Key Responsibilities
- 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
Required Qualifications
- Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field, with 5-12 years of relevant industry experience
- 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
HyperLight is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.