Process Engineer (Test and Burn-in) - CoX Expansion

COHERENT; Calamba; On-site; PHP 600,000 - 900,000; Full time

Job summary

Coherent Philippines is seeking a Test Engineer to optimize and sustain test processes for chip-on-carrier/submount products in a 100% onsite manufacturing setting. You will drive data-driven improvements, including DOE, SPC, and GR&R, to improve yield and stability while validating equipment and processes.

Ideal candidates have 3–5 years in semiconductor testing, hands-on burn-in equipment qualification, and strong skills in Excel/SQL/Power BI.

Qualifications

• Bachelor’s degree in Electronics, Electrical, Mechanical or related science field.
• 3–5 years of experience in semiconductor or optoelectronics manufacturing.
• Hands-on experience in test processes, burn-in equipment qualification, data analysis & troubleshooting; Lean Six Sigma is a plus.

Responsibilities

• Optimize, qualify, and sustain test processes for chip-on-carrier/submount products.
• Control test parameters by monitoring data to identify trends, yield and stability improvements.
• Qualify equipment, fixtures, software, and measurement systems via validation and GR&R.
• Lead root-cause investigations and preventive/corrective actions for test issues.
• Conduct DOE, process capability studies, SPC, GR&R, and data analysis to improve stability.
• Support equipment acceptance/qualification, NPI, transfer, ramp-up, documentation, and training.

Skills

Test data analysis

Statistical methods

GR&R & DOE

Troubleshooting testers

Cross-functional leadership

Independent work

Education

Bachelor's degree in Electronics, Electrical, Mechanical or related field

Tools

Excel

JMP

SQL

Power BI

Job description

Primary Duties & Responsibilities

• Optimize, qualify, and sustain electrical, optical, thermal, performance, and burn-in test processes for chip on carrier/submount products

• Control test parameters such as drive current, optical output power, voltage, temperature, etc by monitoring and analyzing test data to identify trends, abnormal results, equipment drift, intermittent failures, reliability concerns, and opportunities to improve yield and process stability

• Qualify test and burn-in equipment, fixtures, software, and measurement systems through validation, correlation studies, GR&R, and process capability analysis

• Lead root-cause investigations and preventive/corrective actions for test failures, false rejects, false accepts, equipment issues, and burn-in fallout

• Conduct DOE, process capability studies, SPC, GR&R, and data analysis to improve process stability, yield, and productivity

• Support equipment acceptance/qualification, new product introduction, product transfer, production ramp-up, documentation, and process training

Education & Experience

• At least a Bachelor’s degree in Electronics, Electrical, Mechanical or Chemical Engineering or equivalent science courses like Physics, etc

• With 3–5 years of experience in semiconductor or optoelectronics manufacturing

• With hands‑on experience in test process either in sustaining or development mode, test and burn‑in equipment qualification, process validation, data analysis and troubleshooting; Lean Six Sigma certification is an advantage.

Skills

• Possess strong technical knowledge of testing methodologies including power, current, voltage, temperature, etc measurements

• Has the ability to analyze large volumes of test and burn‑in data using Excel, JMP, SQL, Power BI, or equivalent tools

• Skilled in statistical process control, design of experiment, process capability analysis, GR&R, measurement system analysis, data trending, and structured problem‑solving

• Possess troubleshooting capability on testers and burn‑in systems, fixtures, probes, sensors, power supplies, temperature controllers, software, and communication interfaces

• Can effectively drive cross‑functional team and have demonstrated skills on technical communication, documentation, project management, training, and continuous improvement

• Has the ability to work independently, manage multiple priorities, provide timely technical support in a production environment

Working Conditions

• This role is 100% onsite working in a manufacturing, engineering, laboratory, and cleanroom environment.

• Regularly interacts in production areas, laboratories, equipment, process and cross‑functional teams.

• May require occasional support outside regular working hours during critical builds, investigations, or production escalations.

Culture Commitment

Ensure adherence to company’s values (ICARE) in all aspects of your position at Coherent Corp.:

I ntegrity – Create an Environment of Trust

C ollaboration – Innovate Through the Sharing of Ideas

A ccountability – Own the Process and the Outcome

R espect – Recognize the Value in Everyone

E nthusiasm – Find a Sense of Purpose in Work

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.

Coherent Philippines Pte Ltd shares the 5 key principles of fair employment practices and is committed to adopting these principles in the management of our human resources. We believe that the effective implementation of fair employment practices will bring about a more harmonious and progressive work environment within our organization and contribute towards making Philippines a great place to work.

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!