Senior High-Speed Optical Transceiver Applications Engineer

Credo Semiconductor, Inc.; San Jose (CA); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Discretionary bonus

Equity

Medical benefits

Job summary

Credo Semiconductor, Inc. is hiring a High Speed Transceiver Application Engineer in San Jose to validate high-speed modules (400G, 800G, 1.6T).

You’ll work across hardware, firmware, and manufacturing teams, building automation for testing and debugging system-level performance under varied conditions. The role requires advanced education in electrical/communications physics with hands-on transceiver experience and a passion for high-speed signaling.

Qualifications

• Master’s or higher degree in Electrical Engineering, Communications Engineering, Physics, or related field.
• Hands-on experience with high-speed transceivers (QSFP-DD, OSFP, AEC) and lab instruments like oscilloscope, BERT, VNA.
• Strong problem-solving skills and ability to work independently or in a team.

Responsibilities

• Characterization of high-speed optical components (TIA/EML/SiPho) and tuning laser/modulator settings.
• Validate stress tests and ensure link budgets for 400G/800G/1.6T links.
• Develop test automation scripts using Python or similar languages.
• Conduct environmental and reliability stress testing.
• Analyze results and drive root-cause resolution with cross-functional teams.
• Support optical module bring-up and firmware validation.
• Contribute to DSP bring-up and write low-level signal processing code.

Skills

High-speed signaling

SerDes architecture

DSP bring-up/tuning

Python scripting

Team collaboration

Education

Master’s or higher in EE/Communications/Physics

Tools

Oscilloscope

BERT

VNA

Job description

Credo Semiconductor, Inc. is hiring a High Speed Transceiver Application Engineer in San Jose to validate high-speed modules (400G, 800G, 1.6T).

You’ll work across hardware, firmware, and manufacturing teams, building automation for testing and debugging system-level performance under varied conditions. The role requires advanced education in electrical/communications physics with hands-on transceiver experience and a passion for high-speed signaling.