About GlobalFoundriesGlobalFoundries (GF) is a leading full-service semiconductor foundry providing a unique combination of design, development, and fabrication services to some of the world’s most inspired technology companies. With a global manufacturing footprint spanning three continents, GF makes possible the technologies and systems that transform industries and give customers the power to shape their markets. For more information, visit www.gf.comAbout The RoleWe are seeking a Senior Silicon Photonics Design Engineer to lead the design, simulation, and verification of advanced silicon photonic integrated circuits (PICs) for high-speed optical communication and computing applications. This role is ideal for an experienced engineer who combines deep theoretical knowledge with strong hands-on design and tape-out experience.You will work closely with cross-functional teams including process, layout, testing, electronics, and system engineers to deliver high-performance, scalable photonic solutions.Key ResponsibilitiesLead the architecture, design, and optimization of silicon photonic building blocks and subsystems (Tx/Rx).Design and analyze components such as modulators (MRM, MZI), photodetectors, waveguides, couplers, splitters, and heaters.Perform optical, electrical, and thermal simulations using industry-standard tools.Drive PDK evaluation, design rule compliance, and layout-aware optimization.Support chip tape-out, lab characterization, and correlation between simulation and measurement.Own design documentation, specifications, and design reviews.Mentor junior engineers and contribute to best-practice design methodologies.Collaborate with system, packaging, and test teams to ensure end-to-end performance.Required QualificationsMSc or PhD in Electrical Engineering, Photonics, Applied Physics, or a related field.5+ years of experience in silicon photonics or integrated photonic design.Strong background in optical waveguides, modulators, photodetectors, and PIC integration.Hands-on experience with simulation tools such as Lumerical, IPKISS, Photon Design, or equivalent.Solid understanding of CMOS-compatible fabrication processes.Experience with multi-lane optical transceivers and high-speed optical links is a strong plus.Proven ability to take designs from concept through tape-out and measurements.Strong analytical, documentation, and communication skills.We OfferBase SalaryEquityAnnual Bonus PlanMedical InsuranceInformation about our benefits you can find here: https://gf.com/careers/opportunities-in-europe/