Senior Firmware R&D Engineer

Senior Firmware 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 Firmware Engineer to develop and optimize firmware for cutting-edge optical transceiver reference designs. You'll work closely with hardware, DSP, and photonics teams to bring up and scale high-performance systems from early prototypes to production-ready platforms.As part of your responsibilities, you will be: Own firmware for optical transceiver reference designs built around TFLN modulatorsDesign, develop, and maintain embedded firmware for both IMDD and Coherent optical transceivers Implement and optimize CMIS-compliant firmware stacksDevelop drivers and communication stacks for I2C and I3C interfacesInterface with DSPs for signal processing, control, tuning, and monitoringSupport high-speed optical modules > 1.6TbpsBring up hardware and debug issuesCollaborate closely with hardware, optical, and system teamsDevelop internal tools (CLI/GUI) for diagnostics and configurationEnsure firmware reliability, performance, and standards complianceContribute to system architecture and next-gen platform developmentRequirementsBachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related fieldStrong experience in embedded firmware development (C/C++ and others)Hands-on experience with CMIS and I2C/I3C protocolsExperience with QSFP, OSFP, or similar form factors’ MSA specificationsExperience working with DSP-based systemsSolid understanding of high-speed communication systems (>400Gbps)Strong debugging skills in lab environments Preferred QualificationsExperience with TFLN, silicon photonics, or other advanced modulator technologiesBackground in coherent detection or PAM4 systemsExperience building reference designsExperience developing GUI tools (Python, etc.)Familiarity with MDIO, SPI, or similar interfacesExperience with manufacturing test or automationKey SkillsEmbedded systems & low-level programmingHigh-speed interface protocols (I2C/I3C, CMIS)Optical transceiver experiences (QSFP/OSFP)DSP integrationDebugging & system bring-upTooling / GUI developmentWhat Success Looks LikeEarly hardware becomes stable, reliable, and production-readyFirmware becomes a reference platform others build onComplex cross-domain problems (firmware + hardware + optics) are solved quicklySystem performance is pushed beyond conventional solutionsBenefitsCompetitive market-based compensation...