Lux Quanta is seeking a Senior Pre-Sales Engineer to bridge customer needs with technical execution across Europe and beyond. You will drive presales, design complex solutions, and close B2 B deals while coordinating R&D;, Product, and Operations. A hands-on, versátil mindset and the ability to work remotely within Spain are essential. Fluent English and Spanish are required, with German a plus. Expect engagement with enterprise and carrier clients, overseeing fiber optics networks (DWDM/OTN) and #J-18808-Ljbffr