Location flexibility: 3 office days / week – 3 days in the office, 2 days from home
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As a Mechanical Field Service Engineer, you’ll deliver expert maintenance and technical support to ensure mechanical systems and powered assets operate safely, efficiently, and reliably. Your work plays a vital role in supporting high-quality water and wastewater services, with a strong emphasis on renewable energy generation through anaerobic digestion.
This is a hands-on, multi-skilled role that demands flexibility, the ability to work independently, and readiness to operate in confined spaces. You’ll also contribute to both capital and operational projects, ensuring mechanical assets are designed, installed, and maintained to meet performance and reliability standards. Participation in an out-of-hours standby rota is part of the role.
Role Accountabilities
You’ll operate across a defined geographical area, supporting mechanically powered sites—including anaerobic digestion and dewatering plants—with a strong emphasis on safety, compliance, mechanical performance, and energy efficiency. Working within United Utilities’ Health & Safety framework, your responsibilities will include:
Performing planned and reactive mechanical maintenance across multiple sites, ensuring all work is completed safely, efficiently, and within required timeframes.
Acting as the Person Controlling the Works (PCW) for mechanical activities carried out by framework contractors, ensuring full compliance with safety protocols, quality standards, and budgetary controls.
Collaborating with the Process Controller to ensure mechanical systems support optimal telemetry alarm settings and visibility of asset performance.
Maintaining accurate and up-to-date mechanical asset data and maintenance records within corporate systems to support operational decision-making.
Minimising downtime and supporting biogas energy targets by identifying root causes of mechanical inefficiencies and implementing long-term, sustainable solutions.
Contributing to contingency planning by ensuring critical mechanical spares are available at high-risk sites, particularly those involved in resource recovery.
Coordinating and supporting contractors during mechanical project delivery or site interventions, ensuring work is well planned, risk-assessed, and aligned with operational needs.
Essential Skills & Experience
To be considered for a role as a Mechanical Field Service Engineer:
You must be a time served apprentice or equivalent, supported with academic qualifications to a minimum of NVQ level 3.
A full UK driving license is required for the role
Industry experience.
The ability to work in a team but also alone, and sometimes in confined spaces.
Able and willing to diversify into specialised areas of maintenance, as required, such as chlorine gas systems.
Diagnostic, organisational, planning, communication and computer skills.
What you’ll get in return – United Utilities Benefits
Salary - £38,462
Work Type - Onsite
Job Location – Saddleworth Wastewater Treatment Works, Shaw Hall Bank Road, Greenfield Saddleworth Oldham Gtr Manchester OL3 7LD
Role Type - Permanent
Employment Type - Full Time
Working Hours - 37.0 Hours per Week
United Utilities’ (UU) purpose is to deliver great water for a stronger, greener and healthier North West of England. We are committed to providing our services in a way that respects the environment, supports the economy, and benefits society.
We value diversity, inclusion and innovation in our workplace, and we foster a culture where our people can grow, excel, and be themselves.
We uphold our ethics, values and business model to fulfil our mission and, by setting clear goals and objectives, we create sustainable long-term value for our colleagues, customers and communities. Whether you work with a team that shares your vision or join a network of peers with similar interests, you will find a welcoming and supportive organisation to be part of.
We’ve got a lot to offer. You’ll be part of a thriving FTSE 100 company and will enjoy a range of core benefits that reflect your value and value contribution.
Competitive salary + standby payments
Annual bonus scheme
Company pension scheme with up to 14% employer contribution
26 days’ holiday plus bank holidays, rising with service plus you also have the option to purchase holiday.
Membership discounts, including gym, retail, travel and technology schemes
❤️ Health & Wellbeing
Healthcare plan
Free mental health support and wellbeing tools
Life assurance
🚀 Career & Development
Full training and support, including specialist mechanical training
Opportunities to diversify into specialist areas (e.g., chlorine gas systems)
A clear development pathway to upskill into a Flexi Skilled Engineer, giving you broader technical capability across multiple disciplines and increasing your future progression opportunities.
Career progression across engineering, operations and project delivery
Ready to make a difference?
If you’re a mechanically skilled engineer looking for a role with purpose, variety and long-term career opportunities, we’d love to hear from you.
Apply today and help keep the North West flowing.
We rely on every employee to ensure our customers receive the best possible service, day in, day out. In return, we ensure that you will be well rewarded for your efforts, from an excellent salary through to development opportunities that will really kick start a thriving career here at UU.
Working at United Utilities
3 office days / week – 3 days in the office, 2 days from home
A little flex time
Company employees:
7,500
Gender diversity (m:f):
65:35
Hiring in countries
United Kingdom
Office Locations
Company benefits
26 days annual leave + bank holidays
Annual bonus – Bonus levels vary depending on your role grade
Buy or sell annual leave – Buy or sell up to 5 days per year
Death in service – covered for 4 times pensionable earnings
Cinema discounts
Employee recognition scheme – Colleague led recognition scheme with monthly winners
Cycle to work scheme
Dental coverage
Collaboration spaces
Electric Car Salary Sacrifice
Employee assistance programme
Enhanced maternity leave – Up to 26 weeks leave at full pay
Enhanced pension match/contribution – Up to 21% combined contributions
Enhanced sick days
Ergonomic workstations
Faith rooms
Family health insurance
Further education support – Ongoing learning opportunities through apprenticeships and vocational training
Gym membership – On-site gym at our head office & discounts on local gyms for those not based there
Health cash plan
Health insurance
In house training
Mental health days – 1 wellbeing day per year (in addition to annual leave)
Mental health first aiders
Compassionate leave
Enhanced paternity leave – Up to 4 weeks leave at full pay
Mental health platform access – Offering mental health consultations, health checks, digital fitness resources, and wellbeing support.
On-site gym
Open to compressed hours
Open to part time work for some roles
Adoption leave
Private GP service – via our virtual GP - available to you and your loved ones
Professional subscriptions
Referral bonus – of £500
Neonatal leave
Reservist leave – Reservists/Army Reserve with 6 months service are entitled to 10 days paid leave per year to attend the annual training camp.
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