Senior Optical Transceiver R&D Engineer

Senior Optical Transceiver R&D EngineerOn-siteEngineeringFull timeSingapore, Singapore, SingaporeShare this job DescriptionHyperLight is at the forefront of the commercialization of thin-film lithium niobate (TFLN) integrated photonics - a material and process technology that is enabling high-performance, scalable optical components across AI/datacom infrastructure, hyperscale computing, quantum computing, sensing, and beyond. Founded in 2018 and backed by leading venture capital, we’ve built a team and a platform focused on real-world mass deployment of TFLN photonics technology.At the core of our work is the TFLN Chiplet™ platform — a modular, integrated architecture designed for scalability, manufacturability, and seamless integration into complex systems. It offers a rare combination of extraordinary performance and industrial readiness, enabling system developers across applications to deploy the technology fast and ready. We partner with our customers and suppliers from conceptualization, design, and prototyping phases, all the way through mass production to ensure smooth and rapid deployment of TFLN photonic technology.We believe our platform is the key, in the golden age of integrated photonics, to empower humanity to the next level. We assembled a world class team covering engineering, business, and operations. We believe in the power of integrity, innovation, collaboration, and pragmatic solutions. Our diverse team thrives on challenges and is united by a shared commitment to excellence. We take pride in tackling complex challenges with curiosity, humility, and a deep sense of care for one another.Our growing team is looking for a hands-on Transceiver R&D Engineer to own the design, characterization, and qualification of advanced optical transceiver reference designs. You'll work across firmware, DSP, optics, and hardware to ensure our QSFP/OSFP-based transceivers meet performance and interoperability requirements.As part of your responsibilities, you will be: Define and execute test plans for optical transceivers (IMDD and/or coherent)Characterize transceiver performance for >1.6T modules — BER, eye diagrams, SNR, OSNR, TDECQ, OER, OMA, receiver sensitivity, latency, and moreValidate TFLN modulator-based transceivers across electrical, optical, and thermal domainsBring up and debug QSFP/OSFP transceiver modulesCollaborate with firmware and DSP teams to tune system performanceSupport compliance testing (IEEE, OIF, CMIS)Analyze failures, drive root-cause resolution, and recommend design improvementsRequirementsBachelor's or Master's degree in Electrical Engineering, Physics, or a related field5 to 12+ years of relevant experience in high-speed optical transceiver testing and/or design (>400 Gbps)Experience with Datacom and/or Telecom transceiversHands-on experience with QSFP and OSFP form factorsSolid understanding of PAM4, TDECQ, BER, OSNR, jitter, eye diagrams, and receiver sensitivityProficiency with lab equipment — oscilloscope, DCA, BERT, OSA, VNA, etc.Strong debugging skills and a methodical approach to troubleshootingClear communicator, able to articulate issues and solutions across teams Preferred QualificationsExperience with TFLN, silicon photonics, or other advanced modulator technologiesFamiliarity with PAM4, coherent detection, and DSP-based systemsExperience with thermal and reliability testingExperience building semi-automated test systemsFamiliarity with the OSFP/QSFP MSA specificationsKey SkillsCircuit design & characterizationSignal integrity (electrical + optical)Debugging & product bring-upData analysisCross-functional collaborationWhat Success Looks LikeTransceivers brought up and validated to meet spec under real-world conditionsIssues identified and resolved early, with clear root-cause analysis and improvement plansCustomers empowered to optimize performance on our modulesMeasurable performance gains delivered for 1.6T+ systemsBenefitsCompetitive market-based compensation and...