Field Service Mechanical Engineer - Water & Biogas Plants

United Utilities; Greenfield; On-site; GBP 35,000 - 42,000; Full time

Benefits offered by this job

Competitive salary + standby payments

Annual bonus scheme

Company pension with up to 14% company

26 days’ holiday + bank holidays

Discounts for gym, retail, travel

Job summary

United Utilities is hiring a Mechanical Field Service Engineer to deliver hands-on maintenance and technical support across our sites, with a focus on safety and energy efficiency. The role supports anaerobic digestion and dewatering plants within a defined geographical area.

You will operate in confined spaces, act as PCW for contractors, and ensure asset data and regulatory compliance while driving reliability and performance improvements. This is a permanent, full-time on-site position.

Qualifications

• Time served apprenticeship with NVQ level 3 or equivalent.
• UK driving licence is essential for the role.
• Experience in mechanical maintenance in an industrial setting.
• Ability to work solo or in a team and in confined spaces.
• Willingness to diversify into specialised areas such as chlorine gas systems.
• Strong diagnostic, planning, communication and computing skills.

Responsibilities

• Perform planned and reactive mechanical maintenance across multiple sites.
• Act as Person Controlling the Works (PCW) for mechanical activities by contractors.
• Collaborate with Process Controller to support telemetry and asset performance.
• Maintain accurate mechanical asset data and maintenance records.
• Support environmental compliance with Environment Agency standards.
• Minimise downtime and target biogas energy goals through root-cause analysis.
• Coordinate contractors during project delivery and site interventions.

Skills

Time served apprentice

Full UK driving licence

Teamwork

Work independently

Confined spaces

Chlorine gas systems

Diagnostics

Planning

Communication

Computer skills

Education

NVQ Level 3

Job description

United Utilities is hiring a Mechanical Field Service Engineer to deliver hands-on maintenance and technical support across our sites, with a focus on safety and energy efficiency. The role supports anaerobic digestion and dewatering plants within a defined geographical area.

You will operate in confined spaces, act as PCW for contractors, and ensure asset data and regulatory compliance while driving reliability and performance improvements. This is a permanent, full-time on-site position.