In-House Mechanical Engineer — Critical Site Reliability

PRS; Hatfield; On-site; GBP 46,000 - 53,000; Full time

Benefits offered by this job

Private healthcare

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Gym membership

Canteen on-site

Company pension

Discounts

Overtime pay

Job summary

PRS in Hatfield, Hertfordshire invites an In-House Mechanical Engineer to maintain critical mechanical services at a large mixed-use site, including a warehouse and distribution centre. You will manage PPM and reactive maintenance, ensuring reliability and safety in a fast-moving environment.

The role requires a qualified mechanic with experience in building services, fault-finding, and the ability to work in a small on-site team. Overtime is available with generous benefits.

Qualifications

• Recognised mechanical qualification or apprenticeship (NVQ/C&G Level 3 or equivalent).
• Solid experience with mechanical building services systems.
• Background in critical, industrial, warehouse, healthcare, or commercial environments.
• Strong fault-finding and problem-solving skills.
• A professional approach and the ability to work effectively as part of a small on-site team.

Responsibilities

• Deliver planned preventive maintenance (PPM) and reactive maintenance across all mechanical building services.
• Maintain and fault-find systems including HVAC plant, pumps, pipework, valves, and domestic water systems.
• Support critical infrastructure to ensure operational continuity across warehouse and distribution functions.
• Ensure all works are carried out in line with health and safety legislation, site standards, and statutory compliance.
• Maintain accurate logbooks, reports, and maintenance documentation.
• Work collaboratively with the wider engineering team and specialist contractors when required.
• Contribute to audits, inspections, and ongoing improvements to plant reliability and efficiency.

Job description

PRS in Hatfield, Hertfordshire invites an In-House Mechanical Engineer to maintain critical mechanical services at a large mixed-use site, including a warehouse and distribution centre. You will manage PPM and reactive maintenance, ensuring reliability and safety in a fast-moving environment.

The role requires a qualified mechanic with experience in building services, fault-finding, and the ability to work in a small on-site team. Overtime is available with generous benefits.