Job Description

Process Engineer - Pencoed, South Wales

Join ROCKWOOL UK, part of the world's leading manufacturer of sustainable stone wool insulation products, and play a vital role in building a better future. At our state-of-the-art manufacturing facility in Pencoed, we transform volcanic rock into innovative, sustainable solutions that improve modern living and reduce environmental impact.


We are looking for a talented Process Engineer to drive process enhancements, resolve production challenges, and support skills development across our operations. Reporting to the Head of Process & Project Engineering, you will help ensure our manufacturing processes consistently achieve safety, efficiency, quality, and cost performance targets in a fast-paced, collaborative environment.

What we offer:

Competitive salary 30 days annual leave + Bank Holidays Aviva Pension Company bonus scheme Free on-site parking Electric car charging facilities Life Assurance 4x annual salary Westfield Health Cashback Healthcare Scheme and Rewards Scheme

What you bring:

Qualified to Degree level in engineering or manufacturing discipline Experienced in the manufacturing industry Previous experience of lean, CI & operational excellence Strong analytical and data management skills The capability to work within a team

What you will be doing:

Contributing to the achievement of the factory's safety, environmental, and sustainability targets by promoting safe working practices, meeting regulatory requirements, and supporting continuous improvement initiatives Leading detailed investigations into production and process issues, carrying out root cause analysis, involving cross-functional teams, and delivering robust, lasting solutions Planning, coordinating, and overseeing structured trials for materials, products, and processes, following Management of Change procedures and collaborating closely with stakeholders to optimise efficiency, quality, and consistency Delivering measurable cost improvements by analysing Variable Production Costs (VPC), identifying opportunities for savings, and supporting the plant's budgeting process with accurate, data-led input Maintaining precise process settings, communicating operational changes effectively to stakeholders, updating standard operating procedures (SOPs) in a timely manner, and providing training to develop the skills and knowledge of production teams Playing a key role in factory shutdown and downtime planning by identifying critical cleaning, maintenance, and upgrade requirements, assisting with the successful commissioning of new equipment, and implementing initiatives to enhance Overall Equipment Effectiveness (OEE) and productivity

About ROCKWOOL

ROCKWOOL harnesses the natural power of stone to create innovative insulation and building solutions that make life safer, more sustainable, and more comfortable. Founded in Denmark in 1937, we are the world leader in stone wool solutions, with 51 manufacturing facilities in over 40 countries and more than 12,000 employees. Our mission is to use one of nature's most abundant resources to help people and communities thrive while protecting the planet for future generations.

Our Culture

We are proud of our inclusive, diverse workplace, representing 79 nationalities worldwide. Everyone is valued, respected, and heard, with equal opportunities at the heart of our approach.


Life at ROCKWOOL is guided by The ROCKWOOL Way - our shared values of ambition, responsibility, integrity, and efficiency, which shape how we work, innovate, and collaborate.

Interested?

If you share our passion for making a positive difference, join us and help improve modern living conditions for millions of people worldwide.

Closing Date: 14th September 2025