Process Integration Engineer

Coherent Corp.; Stockholms kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

Coherent Corp. in Sweden is seeking a senior Wafer Process Owner to lead and optimize the integrated wafer fabrication flow for assigned products.

You will define process specifications, analyze process data, and drive corrective actions to enhance yield and manufacturability while supporting new product introductions. You will collaborate with Chip Design, Process Engineering, Manufacturing, and Quality teams, and contribute to process development in a cleanroom environment.

Qualifications

• Strong foundation in semiconductor processing, process integration, and device physics.
• Experience with III-V or photonic device fabrication is highly advantageous.
• Hands-on experience with semiconductor fabrication processes in a cleanroom environment.
• Experience developing or supporting semiconductor processes from development through ramp and high-volume manufacturing.
• Familiarity with epitaxy, wet etching, plasma etching, thin-film deposition, and photolithography.

Responsibilities

• Own and optimize the integrated wafer fabrication process flow for assigned products.
• Define and maintain wafer process specifications and control strategies, including MES process flow setup.
• Analyze process, inline, and test data to understand process behavior and improve yield and manufacturability.
• Investigate and resolve process deviations and product test failures through root cause analysis.
• Implement corrective and preventive actions to improve yield, process stability, and product quality.
• Provide shop floor guidance and support manufacturing teams during process issues.
• Maintain technical documentation including process specifications, change records, and experimental results.
• Design and optimize integrated process flows to enable new products and device concepts.
• Collaborate with Chip Design and Process Engineering to balance device performance and manufacturability.
• Plan and manage wafer lots used for prototyping and product development.
• Characterize integrated processes and evaluate impact of tolerances on yield and device performance.
• Support ramp-up and stabilization of new products in manufacturing.
• Development and optimization of new process integration technologies for current and next-generation InP PIC platforms to expand process capability.
• Plan and execute experiments to develop and optimize process modules.
• Ensure new integration technologies reach maturity suitable for product process flows.

Skills

Semiconductor processing

Process integration

Device physics

DOE/FMEA/JMP

Metrology & characterization

Lithography masks CAD

Education

MSc or PhD in Engineering Physics/Electrical Engineering/Optoelectronics

Tools

CAD layout tools for lithography mask design

Job description

• Own and optimize the integrated wafer fabrication process flow for assigned products.
• Define and maintain wafer process specifications and control strategies, including MES process flow setup.
• Analyze process, inline, and test data to understand process behavior and improve yield and manufacturability.
• Investigate and resolve process deviations and product test failures through systematic root cause analysis.
• Implement corrective and preventive actions to improve yield, process stability, and product quality.
• Provide shop floor guidance and support manufacturing teams during process issues.
• Maintain technical documentation including process specifications, change records, and experimental results.

Responsibilities

JOB DESCRIPTION

Wafer Process Ownership

• Own and optimize the integrated wafer fabrication process flow for assigned products.
• Define and maintain wafer process specifications and control strategies, including MES process flow setup.
• Analyze process, inline, and test data to understand process behavior and improve yield and manufacturability.
• Investigate and resolve process deviations and product test failures through systematic root cause analysis.
• Implement corrective and preventive actions to improve yield, process stability, and product quality.
• Provide shop floor guidance and support manufacturing teams during process issues.
• Maintain technical documentation including process specifications, change records, and experimental results.

New Product Introduction

• Design and optimize integrated process flows to enable new products and device concepts.
• Collaborate with Chip Design and Process Engineering to balance device performance and manufacturability.
• Plan and manage wafer lots used for prototyping and product development.
• Characterize integrated processes and evaluate the impact of process and design tolerances on yield and device performance.
• Support ramp-up and stabilization of new products in manufacturing.

Process and Technology Development

• Development and optimization of new process integration technologies for current and next-generation InP PIC platforms to expand process capability.
• Plan and execute experiments to develop and optimize process modules.
• Ensure new integration technologies reach maturity suitable for product process flows.

Collaboration

• Work closely with Chip Design, Process Engineering, Product Engineering, Manufacturing, and Quality teams.
• Collaborate with global Coherent sites (e.g. Sherman, Fremont, Zürich)

Qualifications

Skills & Qualifications:

We are looking for candidates with a strong foundation in semiconductor processing, process integration, and device physics. Experience with III-V or photonic device fabrication is highly advantageous but not required.

Required

• MSc or PhD in Engineering Physics, Electrical Engineering, Optoelectronics, or a related field.
• Hands‑on experience working with semiconductor fabrication processes and equipment in a cleanroom environment.
• Familiarity with semiconductor fabrication processes such as epitaxy, wet etching, plasma etching, thin‑film deposition, and photolithography.
• Experience in semiconductor process integration, process engineering, or related roles in a semiconductor fabrication environment.
• Experience developing or supporting semiconductor processes from development through product ramp and high‑volume manufacturing.
• Experience with III-V semiconductor or photonic device fabrication is highly advantageous, but candidates with relevant experience from other semiconductor technologies are also encouraged to apply.

Technical Skills

• Strong understanding of semiconductor process integration and interactions between multiple fabrication steps.
• Ability to analyze manufacturing, inline, and test data to understand process behavior and identify root causes of yield or device performance issues.
• Experience with statistical methods and tools for process analysis and control (e.g., DOE, FMEA, JMP or similar tools).
• Experience with process characterization and metrology techniques such as SEM, EDX, electrical measurements, and materials analysis.
• Experience with CAD layout tools for lithography mask design is beneficial.
• Knowledge of optoelectronic device physics or III-V device design is a plus.

Language

• Fluent in English.
• Swedish proficiency is an advantage, with willingness to develop working proficiency.

Who You Are

• Self-driven and naturally curious, with strong motivation to understand underlying process and device interactions and drive technical solutions to completion.
• Strong analytical and problem‑solving skills, with the ability to interpret complex process and test data and identify root causes of yield or device performance issues.
• Detail‑oriented and structured, with the ability to track and organize complex process information across multiple fabrication steps, experiments, and datasets.
• Clear and effective written and verbal communication skills, with the ability to present technical analyses and recommendations to cross‑functional engineering teams.
• Ability to collaborate effectively with teams including chip design, process engineering, manufacturing, product engineering, and quality.
• Ability to understand different perspectives and translate technical requirements into clear and practical process instructions for manufacturing teams.

In this role, you will apply these capabilities in a highly collaborative environment, where clear communication, ownership, and continuous improvement are essential.

We believe you demonstrate behaviors aligned with our ICARE values:

• Integrity – You take ownership and ensure high quality and accuracy in your work
• Collaboration – You work effectively across teams and functions
• Accountability – You drive results and take responsibility for outcomes
• Respect – You value different perspectives and contribute to a positive work environment
• Excellence – You are curious, analytical, and continuously seek improvements

Working Environment

• A substantial portion of the work takes place in the wafer fabrication cleanroom, particularly during process development, product ramp‑up, and manufacturing issue resolution.
• Combination of hands‑on work, analysis, and cross‑functional collaboration.

Recruitment Process

• Applications are reviewed continuously
• Initial screening by HR
• Competency‑based interviews with hiring manager and team
• Final candidates may undergo background checks, reference checks, and medical testing (including alcohol and drug testing)
• For some roles, union consultation may be required before final decision

Additional Information

• This role has no direct reports
• Senior candidates may take on mentoring responsibilities
• Right to work in Sweden is required

About Us

Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. 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. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!