Job Description
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 global 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 seeking an Electrical / Electronics Engineer to support the design, development, and testing of advanced electronic systems from concept through production. As part of the R&D development team based in Cádiz, Spain, you will contribute to the development of electronic protection and safety products, with a focus on Residual Current Devices (RCDs), ground-fault detection devices, and related protective solutions used in low-voltage electrical systems. This role is ideal for an engineer with early professional experience who is eager to grow technically while working closely with senior engineers and a multidisciplinary team. You will gain hands-on exposure across the full product development lifecycle, from concept through validation and certification.
About the job:
Electronics Design & Development
Support the design, development, modification, and evaluation of electronic circuits and subsystems under the guidance of senior engineers
Assist with schematic capture, circuit analysis, and simulation activities
PCB & Components
Support PCB design activities, including layout reviews and basic signal integrity, power, and thermal considerations
Assist with component evaluation and selection based on performance, availability, and cost
Testing & Validation
Participate in prototype builds, testing, troubleshooting, and analysis of test results
Support validation activities to ensure product performance and reliability
Collaboration
Work closely with electrical, firmware, mechanical, and test engineering teams to support system-level integration
Documentation & Compliance
Contribute to technical documentation (schematics, test reports, design notes)
Support compliance with applicable standards and certification requirements (IEC, CENELEC, UL, etc.)
About you:
Bachelor’s degree in Electrical Engineering, Electronics Engineering, Telecommunications, or a related field
Minimum 3 years of experience in electronics design or development
Solid understanding of analog and digital electronics fundamentals
Experience with schematic capture and PCB design tools (e.g., Altium or equivalent)
Familiarity with mixed-signal design concepts
Good communication skills in English
Preferred Qualifications
Familiarity with low-voltage electrical protection standards (IEC, CENELEC, UL, etc.)
Exposure to circuit protection technologies and methods
Basic understanding of embedded hardware design and collaboration with firmware teams
Experience with simulation tools and analysis applications
Basic scripting knowledge (e.g., Python) for test or analysis support
Awareness of CE marking and certification processes
#LI-RK
At Littelfuse, we support employee growth and development. Guided by our culture principles, our teams work together to deliver value for customers and make a positive impact in the communities where we operate. We are an equal opportunity employer committed to fostering an inclusive workplace where everyone has the opportunity to grow and contribute. We offer competitive compensation and benefits, performance-based incentives, flexible work arrangements, and development opportunities.