Mechanical Field Service Engineer

UNITED UTILITIES; Lancashire; On-site; GBP 30,000 - 40,000; Full time

Job summary

A leading utilities provider in the UK is seeking a Field Service Engineer (Mechanical) to perform maintenance and support on mechanical systems. The ideal candidate will have NVQ level 3 qualifications, a valid UK driving licence, and demonstrate strong diagnostic and communication skills. Responsibilities include ensuring safety compliance and optimizing mechanical performance across various sites. This role offers a competitive salary, a generous leave package, and numerous employee benefits.

Benefits

26 days annual leave, increasing to 30 after four years

Up to 14% employer contribution pension scheme

Up to 7.5% performance-related bonus

Comprehensive healthcare plan

Employee Assistance Plan

Mental health support

Gym and wellness discounts

Qualifications

• Time served apprentice or equivalent qualifications required.
• Full UK driving licence mandatory.
• Industry experience is necessary.
• Ability to work independently and in a team, including confined spaces.
• Willingness to diversify into specialized maintenance areas.

Responsibilities

• Perform planned and reactive mechanical maintenance across multiple sites.
• Act as the Person Controlling the Works (PCW) for mechanical activities.
• Collaborate with the Process Controller for optimal telemetry settings.
• Maintain accurate mechanical asset data and maintenance records.
• Ensure compliance with Environment Agency standards.

Skills

Mechanical maintenance

Diagnostic skills

Organisational skills

Communication skills

Planning skills

Education

NVQ level 3

Time served apprentice

Job description

As a Field Service Engineer (Mechanical), 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. You will 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:

Responsibilities

• 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.
• Supporting environmental compliance by ensuring mechanically powered assets meet Environment Agency regulatory standards.
• 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.

Qualifications

• You must be a time served apprentice or equivalent, supported with academic qualifications to a minimum of NVQ level 3.
• A full UK driving licence 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.

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 will be part of a thriving FTSE 100 company and will enjoy a range of core benefits that reflect your value and value contribution.

Benefits

• A generous annual leave package of 26 days, which increases to 30 days after four years of service (increases one day per year), in addition to 8 bank holidays.
• A competitive pension scheme with up to 14% employer contribution, 21% combined, and life cover.
• Up to 7.5% performance‑related bonus scheme, as well as recognition awards for outstanding achievements.
• A comprehensive healthcare plan through our company‑funded scheme.
• MyGymDiscounts – gym and wellness benefit that offers up to 25% off on gym memberships and digital fitness subscriptions.
• Best Doctors.
• Salary Finance.
• Wealth at Work courses.
• Deals and discounts.
• EVolve Car Scheme.
• Employee Assistance Plan.
• Mental health first aiders.
• ShareBuy.
• MORE Choices flexible benefits.
• Enhanced parental leave schemes.

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.