Littelfuse (NASDAQ: LFUS) is a diversified industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy. Headquartered in Chicago, Illinois, USA, we serve customers across industrial, transportation, and electronics markets worldwide. With approximately 16,000 employees we design and manufacture innovative technologies that support electrification, energy efficiency, and advanced automation. Our general reach is matched by a culture that empowers innovation and long-term growth. Guided by our principles We Care, We Succeed With Our Customers, and We Own the Outcome, we work collaboratively, think boldly, and deliver solutions that move industries forward.

We are looking for an experienced Senior Electronics Engineer to lead the design, development, testing, and support of advanced electronic systems from concept through to production. Based in Cádiz, Spain, you will be part of the R&D; development team, working on electronic protection and safety products, with a strong focus on Residual Current Devices (RCDs),



ground-fault detection devices, and related protective functions used in low-voltage electrical systems. This role offers the opportunity to contribute across the full product lifecycle—from concept and design through prototyping, validation, certification, and production support—while collaborating with multidisciplinary engineering teams.

About the job:

Electronics Design & Development
- Design, develop, modify, and evaluate electronic systems and subsystems for protection and safety products
- Define design approaches, architectures, and key parameters to meet performance and compliance requirements

Circuit Design
- Create detailed schematics, perform circuit analysis, and run simulations to validate designs
- Apply strong expertise in both analog and mixed-signal circuit design

PCB Development
- Lead and/or oversee PCB design activities, including signal integrity, power distribution, and therma

📌 Sr. Electrical/Electronic Engineer (Cádiz)
🏢 Littelfuse
📍 Cádiz