Field Service Engineer

• We are seeking a motivated and capable Service & Commissioning Engineer to join our growing wastewater engineering team.

The successful candidate will be responsible for installation, servicing, commissioning, fault finding, and optimisation of wastewater treatment equipment across a variety of sites throughout the UK.

This is a hands‑on role suited to someone who is practical, safety‑conscious, and confident working both independently and as part of a team. The position involves regular site work, working away from home and direct interaction with clients.

• Commission wastewater treatment systems including tertiary filtration, SAF units, lamella settlers, dosing systems and associated pump stations
• Service and maintain mechanical and electrical equipment
• Fault finding on pumps, blowers, control panels and process equipment
• Carry out planned preventative maintenance (PPM) visits
• Assist with installations and upgrades of hire and permanent treatment systems
• Read and interpret P&IDs, wiring diagrams and technical drawings
• Complete site documentation including RAMS, service reports and commissioning sheets
• Ensure all works are carried out in accordance with health & safety legislation and company procedures
• Liaise professionally with site operators, contractors and project managers
• Provide feedback to the service manager regarding recurring issues or improvement opportunities

• Strong work ethic and reliability
• Proactive and solution‑focused mindset
• Good communication skills
• Able to work independently and manage workload effectively
• Safety‑conscious and compliant
• Keen to learn and develop technical knowledge
• Professional and presentable when dealing with clients
• Happy to work away from home

Our market‑leading offering provides you with benefits that suit your lifestyle.

We have a virtual GP on hand for you and members of your household. So you can get expert advice by video or phone without having to leave your home. We offer financial wellbeing assistance through our Salary Finance scheme. For example, you could access 50% of your earned pay before payday for a small fee. Salary Finance also offers competitive loans.

When you join us, we’ll give you a link to our flexible lifestyle benefits platform, Choices. You might choose to purchase up to five extra days’ holiday each year. You might buy critical illness insurance, seek dental treatment or buy technology products at an affordable cost. There are many choices!

We give you access to high street discounts from thousands of well‑known retailers, gyms and more through our MiDeals platform. And we have a cycle‑to‑work scheme. Life cover of up to four times your salary is available. We also offer enhanced pension contributions, a save‑as‑you‑earn scheme, and a Mitie Matching Share Plan (you could even be awarded free shares in Mitie).

We award our employees with Mitie Stars as recognition for their hard work. There are cash prizes up for grabs each month and at the end of the year there’s a chance to scoop a top prize of £10,000!

Our success is a direct result of the experience and quality of our people. Progressing your career is therefore a top priority for us. We offer a diverse variety of training and development avenues via a wide selection of learning resources to suit you.

We are committed to ensuring our recruitment process is inclusive and accessible to all. If you have a disability or long‑term condition (for example dyslexia, anxiety, autism, a mobility condition or hearing loss) and need us to make any reasonable adjustments, changes or do anything differently during the recruitment process, please let us know by emailing Zehdan Raja at

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