Senior Optical Transceiver R&D Engineer

About the role

HyperLight is developing thin-film lithium niobate (TFLN) integrated photonics, with a focus on its TFLN Chiplet platform for AI/datacom, hyperscale computing, quantum computing and sensing. The company is looking for a hands-on Transceiver R&D Engineer to own the design, characterization and qualification of advanced optical transceiver reference designs, working across firmware, DSP, optics and hardware so that QSFP/OSFP-based transceivers meet performance and interoperability requirements.

Key responsibilities

• Define and execute test plans for optical transceivers (IMDD and/or coherent)
• Characterize transceiver performance for modules above 1.6T, including BER, eye diagrams, SNR, OSNR, TDECQ, OER, OMA, receiver sensitivity and latency
• Validate TFLN modulator-based transceivers across electrical, optical and thermal domains
• Bring up and debug QSFP/OSFP transceiver modules
• Collaborate with firmware and DSP teams to tune system performance
• Support compliance testing (IEEE, OIF, CMIS)
• Analyze failures, drive root-cause resolution and recommend design improvements

Required profile

• Bachelor's or Master's degree in Electrical Engineering, Physics or a related field
• 5 to 12+ years of experience in high-speed optical transceiver testing and/or design (above 400 Gbps)
• Experience with datacom and/or telecom transceivers
• Hands-on experience with QSFP and OSFP form factors
• Preferred: experience with TFLN, silicon photonics or other advanced modulator technologies, thermal and reliability testing, semi-automated test systems, and familiarity with OSFP/QSFP MSA specifications

Required skills

• Solid understanding of PAM4, TDECQ, BER, OSNR, jitter, eye diagrams and receiver sensitivity
• Proficiency with lab equipment such as oscilloscope, DCA, BERT, OSA and VNA
• Strong debugging skills and a methodical approach to troubleshooting
• Circuit design and characterization, signal integrity, data analysis and cross-functional collaboration

What we offer

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