Engineer, Mfg Process Sustaining

It's fun to work in a company where people truly BELIEVE in what they're doing! We're committed to bringing passion and customer focus to the business. If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us! About Lumentum Lumentum (NASDAQ: LITE) is a global leader in optical and photonic technologies that power the networks and infrastructure behind AI, cloud computing, and next-generation communications. Built on decades of photonics innovation, Lumentum delivers high-performance lasers, modules, and optical subsystems that enable scalable, energy-efficient data center connectivity, advanced telecom networks, industrial manufacturing, and sensing applications. Headquartered in San Jose, California, the company operates R&D, manufacturing, and sales facilities worldwide. Learn more at . Position: Engineer Sr, Mfg Process Sustaining Location: Lumentum Thailand, Navanakorn – Pathum Thani Department: Transport Business Unit Reports To: Engineering Manager Position Summary We are seeking an experienced and results-driven Senior Manufacturing Process Sustaining Engineer to maintain, control, and continuously improve manufacturing processes for optical and photonic products. This role is responsible for ensuring process stability, resolving production issues, improving product quality and yield, and optimizing existing processes to achieve production, delivery, and cost objectives. The ideal candidate will possess strong technical knowledge, analytical and problem-solving skills, and the ability to collaborate effectively with cross-functional teams in a fast-paced manufacturing environment. Key Responsibilities Manufacturing Process Sustaining Monitor manufacturing-process performance using SPC and other analytical tools. Maintain process stability and ensure manufacturing processes meet production, quality, and cost targets. Review manufacturing information and traceability records for accuracy and compliance. Provide timely technical support to production operators and technicians. Troubleshooting & Problem Solving Troubleshoot process, yield, quality, material, and equipment-related issues. Conduct root-cause analysis and implement corrective and preventive actions. Analyze production data to identify process trends, deviations, and improvement opportunities. Work with relevant teams to ensure corrective actions are completed effectively. Process Improvement & Operational Excellence Develop, validate, and implement process improvements. Improve product quality and yield while reducing defects, cycle time, and manufacturing costs. Lead or support Lean Manufacturing, Six Sigma, and continuous-improvement activities. Support automation and manufacturing-efficiency improvement initiatives. New Product & Process Introduction Support new product introduction and transfer processes from development to mass production. Collaborate with R&D, NPI, Production, Quality, and Equipment Engineering teams. Support process qualification, validation, pilot builds, and production ramp-up. Identify manufacturing risks and establish appropriate process controls. Documentation & Compliance Develop and maintain process specifications, work instructions, control plans, and Engineering Change Orders. Ensure manufacturing processes comply with quality systems, operational procedures, and customer requirements. Support internal, external, and customer audits as required. Ensure compliance with safety, ESD, cleanroom, and company requirements. Qualifications Bachelor’s degree or higher in Engineering, Physics, Materials Science, or a related field. Minimum 5 years of experience in manufacturing, process, or sustaining engineering. Experience in optical, photonic, electronics, semiconductor, or high-technology manufacturing is preferred. Knowledge of SPC, RCA, CAPA, FMEA, DOE, Lean Manufacturing, and Six Sigma. Strong troubleshooting, data-analysis, and problem-solving skills. Ability to prepare and maintain technical and manufacturing documentation. Good cross-functional collaboration and communication skills. Good command of English communication. Preferred Competencies Manufacturing Process Sustaining Technical Problem Solving Data Analysis and Decision-Making Process Improvement and Optimization Cross-functional Collaboration Quality and Compliance Awareness Accountability and Results Orientation Continuous Improvement Mindset Working Conditions Work in office, engineering laboratory, cleanroom, and manufacturing-floor environments. Personal protective equipment and cleanroom garments may be required. Occasional overtime or support outside normal working hours may be required depending on production needs We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.