This job expired on 5th September 2025
GRP Quality Production Supervisor
To lead and manage a shift of up to 30 employees across all site operational activities, ensuring the consistent delivery of high-quality GRP products. The role is accountable for achieving output targets while upholding the highest standards of product quality, process compliance, and customer satisfaction. The supervisor will champion continuous improvement, quality assurance, and adherence to safety and environmental standards.
About the role
· Ensure daily production schedules are completed with a focus on meeting product specifications and quality standards.
· Oversee quality control of raw materials (resins, glass rovings, mats, additives), ensuring traceability and compliance with specifications.
· Prevent the release of non-conforming GRP sheets, using inspection and testing protocols to maintain product integrity.
· Maintain ISO 9001 and BMDS quality management system compliance, ensuring all operations meet internal and external audit requirements.
· Lead root cause analysis and corrective actions for any quality issues or customer complaints originating from the GRP department.
· Monitor and improve first-time-right production rates, reducing rework, scrap, and excess material usage.
· Collaborate with engineering and technical teams to develop and refine manufacturing processes that enhance product quality and consistency.
· Ensure all team members are trained in quality-critical procedures, including visual inspection, measurement techniques, and defect identification.
· Maintain accurate and up-to-date quality documentation, including inspection records, skill matrices, and training logs.
· Drive a culture of continuous improvement using quality tools (e.g., 5 Whys, Pareto analysis, SPC) to identify and eliminate sources of variation.
· Support the development and launch of new products by providing quality-focused production input and ensuring readiness for scale-up.
· Conduct regular quality-focused team briefings, sharing KPIs, lessons learned, and reinforcing quality expectations.
· Ensure all operators understand and follow standard operating procedures (SOPs) and work instructions related to quality.
Promote a clean, organized, and safe working environment through 5S and visual management, supporting both quality and efficiency.
What you will need
Required criteria
- • Results Focus – with a strong orientation toward quality outcomes.
- • Customer Focus – ensuring product quality meets or exceeds customer expectations.
- • Initiative – proactively identifying and resolving quality issues.
- • Team Leadership & People Development – coaching teams on quality awareness and best practices.
- • Change Management – driving improvements in quality systems and processes.
- • Proven experience in quality-driven production environments, ideally within GRP or composite manufacturing.
- • Skilled in using data and metrics to monitor and improve quality performance.
Brett Martin
With more than sixty years of plastic manufacturing experience, servicing a diverse range of industries, our success has been built on a unique combination of great people, great products and a desire to go further on behalf of our customers around the world.

At Brett Martin, you’ll join a workplace where our teams have created a positive working and learning environment. We have career pathways for everyone, whether you’re looking for a specific office role or would like to work hands-on with products. No matter which area of the business you join, you’ll find plenty of opportunities to learn new skills and develop a rewarding career.

Brett Martin, established in 1958, is a leading independent manufacturing company based in Northern Ireland, employing around 1,000 people across its UK sites. With a head office in Mallusk, Co. Antrim, it specializes in plastic sheets, roof light systems, and plumbing and drainage products. Known for its commitment to investment in technology, sustainability, innovation, and employee development, Brett Martin is a top Northern Ireland employer. The company boasts a turnover of £195 million, 50% of export sales to over 70 countries, and 25% of its operations are sustainably powered.
Our benefits
Brett Martin offers a comprehensive range of rewards and benefits to its employees. The company is committed to safeguarding the health, safety, and wellbeing of its staff by providing life assurance, safety wear, HR support, and free car parking. In terms of pay and benefits, employees enjoy competitive salaries, profit-related pay, uniform allowance, and an employer contributory pension scheme. Brett Martin also invests in the development of its employees through access to training courses, progression opportunities, and travel experiences. The company fosters a positive working environment with charity and fun day events, team building initiatives, service-linked holidays, and suggestion scheme rewards.
Retirement plan and/or pension
Free parking
Cycle to work
Open office
Life insurance
Long service recognition
Wellbeing Scheme
Work With Charities
Social Opportunities
Annual Rise
Profit Share
Employee of the Month
Employee Recognition Scheme
Annual performance review
Culture of recognition
On the job learning
Progression opportunities
Access to Health & Wellbeing app
Long service awards
Service recognition increases to annual leave
Staff celebration events
GRP Quality Production Supervisor
With more than sixty years of plastic manufacturing experience, servicing a diverse range of industries, our success has been built on a unique combination of great people, great products and a desire to go further on behalf of our customers around the world.