Process Engineer

Overview

Join to apply for the Process Engineer role at Coherent Corp.

Location: Mandaluyong, National Capital Region, Philippines (additional nearby locations may apply).

Key Responsibilities

• Develop and optimize chemical-mechanical polishing and fine grinding techniques for ZnSe.
• Reduce defects such as surface haze, scratches, subsurface damage, and roughness through process improvements.
• Implement statistical process control (SPC) for polishing uniformity and define quality criteria (flatness, roughness, surface irregularities) based on interferometry.
• Work with the Quality Assurance team to ensure compliance with optical performance standards (ISO 10110, MIL-PRF-13830B).
• Maintain and optimize lapping and polishing equipment (single/double-sided polishers, planetary systems); evaluate new tools, pads, slurries, and coatings to enhance performance.
• Develop predictive maintenance programs to ensure equipment reliability.
• Perform defect analysis and root cause investigation using optical microscopy, interferometry, and SEM; address process deviations with corrective actions to minimize yield loss.
• Optimize edge rounding, stress-relief polishing, and surface conditioning techniques.
• Implement automation and Industry 4.0 technologies for real-time process monitoring; develop standard work procedures and automation scripts.
• Ensure environmental and safety compliance for ZnSe handling, including waste management protocols for slurry disposal and recycling; conduct risk assessments (FMEA, HAZOP) for chemical exposure and process hazards.

Qualifications & Experience

• Bachelor’s Degree in Engineering (Materials Science, Mechanical, Optical, or Manufacturing Engineering).
• 1-3 years of experience in precision optics polishing, CMP, or semiconductor wafer processing.
• Proficiency in ZnSe material properties, surface roughness control, and finishing techniques.
• Experience with abrasives (CeO₂, Al₂O₃, diamond), slurries, and polishing chemistries.
• Strong knowledge of ISO 10110 optical surface specifications and MIL standards.
• Familiarity with metrology tools (interferometers, profilometers, AFM, SEM).

Preferred

• Six Sigma Certification (Green/Black Belt) for process optimization.
• Experience with precision optics manufacturing (lenses, IR windows, laser optics).
• Knowledge of fluid dynamics in polishing slurry distribution.
• Proficiency in Python, MATLAB, or LabVIEW for process automation.

Key Skills & Competencies

• Process Optimization & Root Cause Analysis – reducing polishing defects.
• Material Science & Surface Engineering – ZnSe behavior under different conditions.
• Metrology & Quality Assurance – precision optical measurements.
• Lean Manufacturing & Continuous Improvement – SPC, DOE, yield enhancement.
• Technical Writing & SOP documentation for consistent process execution.

Work Environment

• Cleanroom or controlled laboratory environment with polishing equipment.
• May involve chemical handling and exposure to polishing slurries; requires collaboration with production and quality teams.

Equal Opportunity

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

About Us

Coherent is a global leader in lasers, engineered materials and networking components. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard work through a competitive compensation program.

Note to recruiters and employment agencies

We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and required assistance in writing for a specific opening.

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