Senior Wafer Level Reliability (WLR) Engineer

Diodes Incorporated; South Portland (ME); On-site; USD 143,000 - 219,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401k match

Disability insurance

Life insurance

Paid time off

Wellness program

Job summary

Diodes Incorporated seeks a Senior Semiconductor Technology Development Wafer Level Reliability (WLR) Engineer to lead reliability testing across advanced CMOS technologies. You will analyze failure mechanisms, build lifetime models, and guide design rules with R&D and process teams.

The role supports HVM and process changes, mentoring engineers and delivering cross-functional reliability insights. The ideal candidate holds a Master's/PhD in EE/Materials or equivalent, 5+ years in device

Qualifications

• Advanced degree or equivalent industry experience in semiconductor reliability.
• Experience with high voltage analog technologies (10–120V BCDMOS).
• Publications or patents in reliability fields are a plus.
• Familiarity with JEDEC/ESDA standards and industry groups.

Responsibilities

• Develop and execute WLR methodologies and accelerated stress tests.
• Analyze failure mechanisms such as HCI, EM, BTI, and SIV.
• Build reliability models correlating tests to device lifetime.
• Lead RCA activities and coordinate cross-functional teams.
• Provide early feedback on technology nodes to improve design rules.
• Support high-volume manufacturing and material disposition.
• Ensure testing and data analysis meet industry standards.
• Mentor junior engineers and communicate risk to leadership.

Skills

Wafer-level testing

Reliability analysis

Statistical analysis

Python or R

Cross-functional collaboration

Technical leadership

Education

Master's or Ph.D. in Electrical Engineering, Materials Science, Physics

Tools

Automated wafer-level test equipment

Parametric analyzers

JMP

Minitab

Python

R

Job description

Senior Semiconductor Technology Development Wafer Level Reliability (WLR) Engineer

The Senior WLR Engineer is an experienced technical expert responsible for developing, executing, and analyzing Wafer Level Reliability tests for advanced semiconductor devices. This role involves identifying and mitigating reliability risks throughout technology development and product life cycle. The ideal candidate has a deep understanding of intrinsic semiconductor failure mechanisms and works cross-functionally to drive improvements in device performance, process quality, and overall product reliability. The WLR engineer will be part of the Diodes, Inc. worldwide technology development organization and will work with a team of industry experts designing and developing analog semiconductor process technologies for Diodes products for both internal and external production. Work location will either be the Diodes, Inc. fabrication site in South Portland, Maine (USA) or other offices situated throughout the world.

Principal Duties and Responsibilities:

• Develop and implement WLR methodologies:Create and execute accelerated stress tests for new CMOS, interconnect, and other semiconductor technologies according to industry standards like JEDEC.
• Analyze failure mechanisms:Conduct in-depth analysis of reliability issues such as hot carrier injection (HCI), electromigration (EM), bias temperature instability (BTI), and stress-induced voiding (SIV).
• Build reliability models:Develop and use mathematical and statistical models to correlate test structure data with actual product reliability and project device lifetime.
• Drive root cause analysis (RCA):Lead or support RCA activities for reliability failures, coordinating with process integration, device engineering, and failure analysis teams.
• Guide technology development:Partner with R&D and process development teams to provide early feedback on new technology nodes and influence design rules to enhance reliability.
• Support high-volume manufacturing (HVM):Provide expert support for manufacturing issues, including process conversions and material excursions, by assessing reliability risk and recommending material disposition.
• Maintain quality standards:Ensure test methodologies and data analysis conform to relevant industry standards and best practices.
• Provide technical leadership: Act as a subject matter expert, mentoring junior engineers and communicating complex reliability issues and risk assessments to cross-functional teams and management.

Knowledge, Skills, and Abilities:

• Master's or Ph.D. in Electrical Engineering, Materials Science, Physics, or a related field. Equivalent industry experience would also be considered.
• 5+ years of experience in semiconductor device reliability, with a strong focus on wafer-level testing and characterization.
• Experience with high voltage analog semiconductor technologies, such as 10-120V BCDMOS.
• Background in process integration, device reliability, or technology bring-up in a development fab environment.
• Publication or patent record in device reliability fields.
• Familiarity with JEDEC and ESDA standards, and participation in industry working groups.
• Technical skills
• Expertise in semiconductor intrinsic reliability failure mechanisms.
• Proficiency in operating and programming automated wafer-level test equipment and parametric analyzers.
• Strong background in statistical analysis, including statistical process control (SPC), Weibull analysis, and life-data modeling.
• Experience with statistical software such as JMP or Minitab.
• Proficiency with data analysis tools and programming languages such as Python or R.
• Soft Skills:
• Excellent problem-solving, analytical, and data interpretation skills.
• Exceptional written and oral communication skills for preparing reports and presenting to technical and non-technical audiences.
• Demonstrated ability to lead projects, manage priorities in a dynamic environment, and work effectively with cross-functional teams

Pay range $143,000 to $219,000/yr. Actual compensation may vary based on experience, qualifications, skills, and geographic considerations. Incentive compensation and benefits may also be available.

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Diodes, Inc. is committed to developing power electronics solutions that drive sustainability, safety, and performance. We foster a culture of creativity, integrity, and learning, empowering our teams to push boundaries and deliver excellence to our customers and partners worldwide.

We offer a competitive benefits package to include medical, dental, vision, FSA, 401k with company match, company paid Short Term and Long-Term disability and standard life insurance policy. We also provide paid time off and have an employee wellness program.