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Job description
Manufacturing process improvement
Regular review of production line capacity, production efficiency, and production capacity
Support and implementation of process improvement activities in collaboration with related departments such as production team, quality team, project team, factory controller, and operational excellence team
Monitoring the achievement of process key indicators against budget and operational targets
Support for initiatives to improve product quality, operational reliability, and manufacturing efficiency
Contribution to maintaining a safe, efficient, and productive manufacturing environment
Continuous employee development, proactive cost reduction, and maintenance of a safe and healthy work environment
"Scope of change: No change"
Pay & allowances
Work style
Employment & contract
Benefits & welfare
Apply & selection
Required experience, knowledge, skills, etc.
Required: Knowledge of manufacturing industry and production processes (guideline: 2+ years)
Ordinary driver's license required (Automatic transmission only acceptable)
About the company
Manufacturing and sales of rock wool
Our company is the Japanese subsidiary of "ROCKWOOL" (headquartered in Denmark), which has the No. 1 global market share in rock wool manufacturing and sales. As ROCKWOOL Japan, we will expand our business in Tomioka.
Other info (from job posting)
* Please mail or email your resume (with photo), work history, and cover letter to the business location.
* Contacting us on Saturdays and Sundays: Not possible
* Cover letter: Electronic only acceptable
"Online self-application possible"
* In case of self-application, a cover letter is not required.
Some free-text details (such as special notes or the reason for age restrictions) may still appear in the original Japanese until an accurate translation is confirmed, since translating them out of context could distort their meaning.
Check before you apply
- Whether your residence status permits this kind of work
- Whether the pay, hours, and days off match your wishes
- How to apply and what documents are needed (Hello Work may require a referral letter)
- If applying with the Specified Skilled Worker visa: the company needs to prepare to accept SSW workers (support system, notifications, etc.). When applying or inquiring, ask whether they plan to accept SSW workers
GloJob does not judge work eligibility or visa suitability. Please make the final confirmation yourself, with the employer and a professional.
For employers: see here for information on hiring international talent and preparing to accept SSW workers → Employer page (Japanese)
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This listing is information published on Hello Work Internet Service. Applications are made externally (at Hello Work). GloJob does not judge work eligibility.(Last checked: 2026/06/23)














