{"id":4163362,"url":"https://alion.io/job/littelfuse-test-lab-prototype-supervisor","title":"Test Lab & Prototype Supervisor","company":{"id":6289,"name":"Littelfuse","domain":"littelfuse.com","url":"https://alion.io/company/littelfuse","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":24,"ghost_share":0,"stale_share":0.792,"repost_share":0,"time_to_fill_p50_days":44,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Donostia / San Sebastián, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-12T12:53:40Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T12:53:40Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"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.\nLittelfuse is seeking a Test Lab & Prototype Supervisor to build, lead, and continuously improve our Industrial Circuit Protection (ICP) Test Lab and Prototype Center in San Sebastián, Spain. This is a highly hands-on role for someone who enjoys working directly with equipment, troubleshooting technical issues, and bringing new laboratory capabilities to life. You will play a key role in setting up new test equipment, supporting prototype development, and ensuring the lab is fully prepared to support R&D and product qualification activities.\nAbout the job:\nLead the setup, commissioning, and day-to-day operation of the Test Lab and Prototype Center.\nSupervise and coordinate Test Lab and Prototype Technicians, setting priorities and providing technical guidance.\nMaintain, troubleshoot, and repair electrical test equipment, laboratory systems, and prototyping tools.\nCoordinate prototype builds and test activities in collaboration with R&D and Product Development teams.\nSupport the acquisition, installation, and qualification of new laboratory equipment and tooling.\nDesign, build, and improve prototype fixtures, tooling, and laboratory capabilities, including 3D printing solutions.\nEstablish and execute preventive maintenance plans to maximize equipment reliability and minimize downtime.\nDiagnose and resolve technical issues encountered during prototype assembly and testing.\nEnsure equipment calibration, maintenance records, and laboratory documentation are kept up to date.\nPromote a safe working environment by enforcing laboratory safety procedures and PPE requirements.\nDevelop relationships with external suppliers supporting tooling, maintenance, fixtures, and prototype manufacturing.\nAbout you:\n7+ years of hands-on experience in laboratory operations, maintenance engineering, industrial equipment, prototyping, or a related technical environment.\nTechnical education in Electrical Engineering, Electromechanics, Industrial Maintenance, or a related field.\nExperience setting up, commissioning, installing, or maintaining industrial or laboratory equipment.\nStrong troubleshooting skills with electrical, electromechanical, and testing systems.\nExperience supporting prototype development, test setups, or custom equipment builds.\nAbility to supervise and coordinate a small technical team in a fast-paced R&D environment.\nHighly organized, with experience managing maintenance schedules, calibration activities, and technical documentation.\nHands-on mindset with a genuine passion for understanding, building, and fixing equipment.\nExperience working with suppliers, equipment procurement, or laboratory infrastructure projects is an advantage.\nFluency in Spanish and English.\nLittelfuse strives to empower associate growth and development in a culture of ongoing collaboration and respect for diverse global perspectives and expertise.\nOur Core Values - We Care, We Succeed With Our Customers, We Own The Outcome - support us in our mission to improve the safety, reliability, and performance of our customers’ products that use electrical energy.\nWe are an equal-opportunity employer that takes pride in giving every associate the means and courage to make a difference - everywhere, every day.\nAt 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. 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