What We''re Looking For Senior Principal Engineer, Software/Firmware - coherent optical module firmware/SoC-based embedded platforms/CPORequired15+ years of experience in embedded software/firmware architecture, design, and implementation Deep expertise in coherent optical module firmware (400ZR, 800ZR, or equivalent) and associated standards (OIF-400ZR, C-CMIS, CMIS 4.x/5.x) Strong background in bootloader design, firmware upgrade mechanisms (including hitless/in-service upgrade), and flash man