Sr. Supplier Quality Engineer

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.

About the job:

Excursion Management & Problem Solving

• Lead 8D investigations: Customer or In-Process quality complaint. Own the corrective and preventive action (CAPA) cycle for quality issues originating during assembly or final test.
• Conduct failure analysis: Coordinate with OSAT engineering to analyze production line, internal screening, or customer field failures.
• Conduct audit: Perform on-site audit as verification at supplier facilities to ensure corrective actions are physically and permanently implemented.

Process Control & Continuous Improvement

• Monitor statistical data: Continually track supplier Statistical Process Control (SPC) data, Out-of-Control Action Plans (OCAPs), and real-time yield performance trends monitor for improvement.
• Deploy quality structure frameworks: Implement advanced quality tools including Failure Mode and Effects Analysis (FMEA).

Measurement Systems Analysis (MSA), APQP, SPC and Control Plan frameworks.

• Drive supplier scorecards & QIP: Track supplier Key Performance Indicators (KPIs), generate quality ratings, and hold regular performance review meetings and QIP

Supplier Audits & Qualification

• Execute facility audits: Conduct routine quality management system (QMS), ESD, and focus process technical line audits using industry standards, i.e. ISO9001|IATF16949|VDA6.3 Process||
• Qualify/Certify New supplier site or line: Oversee the production readiness, baseline qualification, and technical change management of new OSAT suppliers.
• Change Control Management: Validate Process Change Notices (PCNs) submitted by supplier to prevent unexpected yield or reliability issues.

About you:

Education & Core Experience

• Degree requirements: Bachelor’s degree in Electrical Engineering, Materials Science, Chemical Engineering, or a related technical discipline.
• Industry experience: Usually 5 to 8+ years within backend semiconductor manufacturing, packaging engineering, or supplier quality management.

Technical Mastery

• Backend processes: Practical knowledge of backgrind, sawing, die attach, wire bonding, flip-chip, molding, underfill, form singulation, platimg. wafer level bumping, SiP and final test for package/ module methodologies.
• Materials knowledge: Clear knowledge of how substrates, PCB, leadframes, epoxy, molding compound, and solder ball, solder impact reliability.
• Sector standards: Familiarity with specialized quality frameworks, particularly ISO 9001, IATF 16949 (automotive), or medical compliance.
• Failure mechanisms: Strong understanding of packaging failure modes like package cracking, popcorn effects, corrosion, and solder joint fatigue.
• Reliability testing: Familiarity with backend qualification standards such as JEDEC (e.g., MSL, HAST, HTOL, Temperature Cycling).
• Automotive standards: Proficiency in AEC-Q100 requirements and IATF 16949 core tools (PPAP, MSA, SPC, FMEA) if supporting automotive lines.

Expected Working Conditions

• High travel volume: Demands up to 30% to 40% travel for sudden on-site crisis/quality excursion management and intensive multi-day to support company’s supplier/customer audits at factory.
• Global alignment: Requires routine interaction with members across international boundaries and varying time zones to sync with global operation/engineering via remote meeting/conference calls
• Location: On-site at office and required minimal supervision..

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.