OneMain Financial Jobs

Job#: 3029787

Job Description:

Mechanical & Electrical Engineering - Mechanical Engineer III

Location: Redmond, Washington (Onsite)

Employment Type: Contract

Role Overview

We are seeking a detail-oriented and self-motivated Mechanical Testing Engineer to join a dynamic team. The successful candidate will be responsible for the execution, development, and optimization of mechanical testing and failure analysis methods for novel single-crystal optical materials. These materials are transformative for next-generation AR/VR applications, and this work is critical to ensuring their reliability and performance. This role is hands-on, involving laboratory work, data analysis, and collaboration with experts across various engineering disciplines.

Key Responsibilities

• Design, implement, and document experiments for the mechanical characterization and failure analysis of novel single-crystal optical materials.
• Handle, prepare, and process material samples, including slicing, dicing, lapping, and chemical-mechanical polishing (CMP), while adhering to laboratory safety protocols.
• Conduct a range of mechanical tests, including fracture toughness testing, flexural strength testing, and biaxial flexure testing.
• Perform comprehensive root cause failure analysis on tested components, utilizing fractography with Scanning Electron Microscopy (SEM).
• Develop and validate novel testing methodologies and fixtures tailored to the unique properties of advanced optical materials.
• Collect, analyze, and interpret test data; prepare detailed reports and present findings to cross-functional teams.
• Collaborate with materials scientists, optical engineers, and manufacturing partners to correlate mechanical properties with material processing and performance.

Required Qualifications

Education: A Master's degree in Mechanical Engineering, Materials Science, or a related field is required.

Experience: 4+ years of hands-on experience in the mechanical characterization of brittle materials such as ceramics, glasses, or single crystals.

Technical Skills:

• Demonstrated expertise in fracture mechanics principles and testing, including the experimental determination of stress intensity factors.
• Experience with advanced material processing techniques such as diamond wire sawing, lapping, bonding/de-bonding, and chemical-mechanical polishing (CMP) or similar.
• Hands-on experience with material, crystallography, and surface science characterization techniques, especially using SEM for fractography.
• Good understanding of mechanical design principles for custom test fixture design.
• Proven ability to design and execute experiments (DOE), analyze results, and draw actionable conclusions.
• Excellent data handling, documentation, and organization skills.

Preferred Qualifications

• A Ph.D. in a relevant discipline with a background in process development or material reliability.
• Familiarity with optical metrology and refractive index measurements (e.g., prism coupler).
• Proficiency in statistical data analysis and its application to brittle materials, including an understanding of Weibull statistics.
• Experience with laboratory automation and data acquisition using software such as LabVIEW, Python, or MATLAB.
• A fundamental understanding of crystallography and the anisotropic mechanical behavior of single-crystal materials.

Compensation & Benefits

The pay range for this position is $60.00 to $65.00 per hour. A comprehensive benefits package is available to eligible employees.

This employer is an equal opportunity employer. All qualified applicants will receive consider