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.

The Senior Debug Engineer is responsible for identifying, analyzing, troubleshooting, and resolving complex product, manufacturing, hardware, software, and system issues. This role works closely with Engineering, Quality, Manufacturing, Test, and Operations teams to drive root cause analysis, implement corrective actions, and improve overall product reliability, quality, and performance.

The ideal candidate possesses strong analytical skills, a methodical problem-solving approach, and the ability to work across cross-functional teams to resolve critical technical issues efficiently.

About Your Job:

Debug and Failure Analysis

· Investigate and diagnose product failures, defects, and performance issues.

· Perform systematic root cause analysis using established problem-solving methodologies.

· Analyze test data, logs, system reports, and failure symptoms to identify root causes.

· Replicate reported issues in controlled environments for troubleshooting purposes.

· Escalate complex technical problems to design and development teams when necessary.

Technical Troubleshooting

· Troubleshoot hardware, software, firmware, electrical, mechanical, and system-level issues.

· Utilize diagnostic tools, oscilloscopes, analyzers, debuggers, and test equipment.

· Verify functionality and performance after corrective actions are implemented.

· Support production and laboratory environments during issue resolution activities.

Root Cause and Corrective Action

· Lead root cause investigations utilizing methodologies such as:

• 5 Whys

• Fishbone (Ishikawa) Analysis

• Fault Tree Analysis (FTA)

• Failure Mode and Effects Analysis (FMEA)

• DMAIC and Lean methodologies

· Recommend and implement corrective and preventive actions (CAPA).

· Track issue closure and validate effectiveness of implemented solutions.

Process Improvement

· Identify recurring failure trends and drive continuous improvement initiatives.

· Develop debug procedures, troubleshooting guides, and knowledge-base documentation.

· Recommend test enhancements to improve defect detection and prevention.

· Support reliability and quality improvement projects.

Cross-Functional Collaboration

· Work closely with:

• Product Engineering

• Design Engineering

• Manufacturing Engineering

• Quality Engineering

• Test Engineering

• Operations Teams

· Communicate technical findings through reports, presentations, and review meetings.

· Support customer issue investigations when required.

About You:

· 10+ years of experience in debugging, failure analysis, manufacturing engineering, quality engineering, test engineering, or related technical roles.

· Experience working in manufacturing, electronics, automotive, industrial, semiconductor, or technology environments preferred.

Technical Skills

· Strong understanding of troubleshooting methodologies.

· Experience with root cause analysis techniques.

· Ability to interpret:

• Schematics

• Engineering drawings

• Specifications

• Test procedures

· Familiarity with manufacturing and test processes.

· Knowledge of quality systems and continuous improvement methodologies.

· Experience using data analysis tools such as Excel, Power BI, Minitab, JMP, or similar.

Preferred Skills

· Knowledge of Lean Manufacturing and Six Sigma principles.

· Experience with automated test systems.

· Familiarity with statistical analysis and process control.

· Programming or scripting knowledge (Python, SQL, C#, or similar).

· Understanding of reliability engineering concepts.

Littelfuse is an equal opportunity employer committed to empowering every associate to make a difference — everywhere, every day.

#LI-KRL

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.