Optical Transceiver Test Engineer
Molex
This job at a glance
- Who can apply
- New grads and up to 1 year · Bachelor's degree
- Must know
- Machine learningData analysisCircuit designPythonTroubleshootingEmbedded systems
- Work
- On-site in Fremont
- Pay
- Not stated by the employer.
- Skill demand
- Circuit design41%Python25%Data analysis15%Machine learning2%of 99 similar entry-level jobs posted in the US this week
- Listed
- Nov 10, 2026 · still open
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About the Role
Molex is rapidly growing its Opto-E business, developing high-speed optical transceivers for AI/ML applications. We are looking for a Test Engineer to lead test development for next-generation optical transceivers from early prototypes through pilot production. This role will have a significant impact on our high-speed optical interconnects and the company's growth.
Key Responsibilities
- Device and module characterization for next-generation optical transceivers for AI/ML applications.
- Working with transceiver module design authority to implement test definitions.
- Implement the hardware and software of test platforms designed by the test engineering group for early engineering samples, EVT/DVT, and pilot productions.
- Perform preliminary test data analysis and summarization for performance gap analysis.
- Provide test support for failure mode analysis from R&D and production phases.
Requirements & Tech Stack
- Bachelor's / Master's in Electrical Engineering or related engineering discipline.
- Coursework or practical experience in one or more of the following: digital communications theory, digital signal processing, circuit theory, and electromagnetism theory.
- Configure and operate oscilloscopes, optical power meters, power supplies, temperature equipment, and other laboratory instruments.
- Develop and maintain Python scripts for instrument control, data collection, data processing, and report generation.
- Execute test plans for engineering samples, EVT/DVT builds, and pilot-production units.
- Document test setups, procedures, software revisions, instrument settings, and results.
- Troubleshoot test setup, hardware, firmware, and measurement issues with senior engineers.
- Support correlation and repeatability studies across test stations.
- Follow laboratory safety and ESD procedures.
Qualifications That Will Put You Ahead
- Previous experience in test instrument automation with Python scripts.
- Experience in automated charting, data analysis using Python.
- Proficient use of oscilloscopes, power supplies, and common laboratory equipment such as digital multimeters, temperature sensors.
- Internship, academic project, or laboratory experience involving automated measurements.
- Familiarity with optical transmitters, receivers, lasers, photodiodes, or optical power measurement.
- Exposure to I²C, UART, or SPI.
- Familiarity with NumPy, pandas, Matplotlib, Jupyter, Git, or similar engineering tools.
- Exposure to high-speed digital communications or PAM4 testing.