Water Treatment Plant Supervisor

Location: Mash Direct HQ, Comber

Reports To: Head of Engineering

Job Type: Full-time, Permanent

Mash Direct is an award-winning, gluten-free producer of potato and vegetable products, offering everything from bulk mash and fries to premium side dishes. Grown and cooked fresh on our family farm, all products are 100% gluten-free and available in ready-to-order sizes or custom formats. Our team is committed to quality, innovation, and delivering excellence — and we are now recruiting a talented and experienced Water Treatment Plant Supervisor to lead our water operations on-site.

What your job is all about:

You will oversee all aspects of water on-site — from boreholes and mains through to discharge — ensuring we meet required environmental and safety standards. This hands-on role includes maintaining water systems, sampling and testing for compliance, and recommending improvements. You will also play a key role in managing risk, ensuring all water and wastewater processes run effectively and sustainably.

Key Responsibilities:

– Operate, calibrate, and maintain all post-filter water treatment equipment (e.g., UV systems, pH meters, Hach meters, analytical balances, wastewater pumps)

– Monitor and test water, solid waste, and wastewater effluent samples (e.g., COD, E. coli, coliform, pH, chlorine, hardness)

– Record and maintain detailed logs, spreadsheets, and digital records of test results

– Ensure compliance with NI Water and Environmental Agency requirements for water, wastewater, and ground samples

– Manage laboratory inventories, hazardous substances, and cleaning/sanitation chemicals

– Maintain site energy usage and update daily readings

– Act as the designated Duty Holder for Legionella, carrying out responsibilities in line with risk assessments

– Recommend improvements and support continuous improvement activities

– Assist with internal audits and quality assurance controls

– Train new staff in water, lab, and safety procedures

Essential Experience & Skills:

– Proven experience in water treatment, wastewater systems, and lab-based testing

– Strong knowledge of NI Water/Environmental Agency compliance standards

– Skilled in using standard lab equipment and interpreting test results

– Familiar with chemical handling, site maintenance, and data analysis

– Competent in using spreadsheets and automated systems for tracking test data

– Experience as a Legionella Duty Holder

– Excellent organisational, communication, and problem-solving skills

Qualifications:

– Safety certification in safe lab practices and water testing procedures

– Strong mathematical and statistical skills for reporting and analysis

What we offer:

– A leadership opportunity in a critical area of operations

– Hands-on experience in a fast-growing, award-winning food manufacturing business

– Supportive environment with cross-functional collaboration across technical and engineering teams

– Competitive salary and benefits package

To apply, send your CV to careers@mashdirect.com or visit mashdirect.com/careers for more information.

Mash Direct is an Equal Opportunities Employer

To Apply:

Send us your details/CV to careers@mashdirect.com or by clicking the ‘Apply Now’