Senior Optical Transceiver Applications Engineer

Credo; 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 in San Jose, CA is seeking a High Speed Transceiver Application Engineer to validate high-speed modules (400G, 800G, 1.6T). You will work with hardware, firmware and manufacturing to ensure robust performance across operating conditions.

You will build automation, perform electrical validation, interoperability testing, and system-level debug, collaborating in a fast-paced, cross-functional environment with diverse backgrounds and experience levels.

Qualifications

• Master’s or higher in Electrical Engineering, Communications Engineering or Physics.
• Hands-on experience with high-speed transceivers and lab instruments (oscilloscope, BERT, VNA).
• Strong problem-solving and ability to work independently or in a team.
• Good communication and cross-functional collaboration skills.
• Passion for high-speed signaling and system-level validation.

Responsibilities

• Characterization of TIA/EML/SiPho components and tuning of lasers/modulators.
• Validate stress receiver sensitivity and ensure link budget for 400G/800G/1.6T links.
• Build automation scripts for test execution, data collection, and analysis (Python or similar).
• Perform environmental and reliability stress testing (thermal cycling, voltage margining).
• Analyze results, drive root-cause resolution with cross-functional teams.
• Support module bring-up, firmware validation, and vendor qualification.
• Contribute to DSP bring-up and tuning, including low-level signal processing.

Skills

Strong problem solving

Excellent communication

Team collaboration

Independent work

Passion for high-speed signaling

Education

Master’s degree in Electrical Engineering

Master’s degree in Communications Engineering

Master’s degree in Physics

Tools

Oscilloscope

BERT

VNA

DSP bring-up code

Python scripting

Job description

Credo in San Jose, CA is seeking a High Speed Transceiver Application Engineer to validate high-speed modules (400G, 800G, 1.6T). You will work with hardware, firmware and manufacturing to ensure robust performance across operating conditions.

You will build automation, perform electrical validation, interoperability testing, and system-level debug, collaborating in a fast-paced, cross-functional environment with diverse backgrounds and experience levels.