Job Description

Job Title: In-House Mechanical Engineer - Critical site
Location: Hatfield, Hertfordshire
Hours: Split days pattern, 6-2 and 12 - 8
Salary: 46k + Overtime + Benefits
The Role:
A well-established organisation are currently recruiting an In-House Mechanical Engineer to support a large-scale, critical operational site within the Facilities Management sector. The role is based on a large Mixed use site housing a warehouse and large distribution centre, where mechanical reliability is essential to daily operations.
This position sits within a close-knit in-house engineering team, offering real ownership of plant, systems, and site performance. The successful candidate will be trusted to maintain key mechanical services and respond effectively to issues in a fast-moving, business-critical environment.
Key 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.

The Ideal Candidate:
The organisation is looking for a practical and reliable mechanical engineer who is comfortable working in a live, high-demand environment. The right individual will take pride in their work and understand the importance of consistency and attention to detail.
Essential:

• Recognised mechanical qualification or apprenticeship (NVQ / C&G Level 3 or equivalent).
• Solid experience working 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.

Desirable:

• Experience with steam or pressure systems.
• Familiarity with large-scale sites such as distribution centres or logistics hubs.

Package & Benefits

• Private healthcare
• Share Save option scheme
• Gym membership
• Subsidised on-site canteen
• Company pension scheme
• Shopping and lifestyle discounts
• Overtime available, paid at time and a half, double time, and triple time where applicable

Jerome White

Skills Required