Mechanical & Water Treatment Engineer

Skanska, one of the world’s leading project development and construction groups, is an inclusive and responsible business dedicated to building a better society.

We are seeking a Water Treatment Engineer to join the Building Services team at MOD Whitehall, London. This role involves working on a government building site, delivering Hard Services, and collaborating with a team of Engineers and Technicians to ensure onsite maintenance, reactive works, and fault analysis are conducted according to contract terms.

What you’ll do:

1. Conduct PPM and planned maintenance, respond to faults, and perform fault analysis.
2. Carry out fault finding, plant adjustments, inspections of electrical/mechanical services, and complete maintenance tasks as per contract specifications.
3. Perform temperature checks, water sampling (including cooling towers and systems), TMV servicing, shower cleaning and disinfection, tank inspections, and follow preventative maintenance programs. Manage reactive tasks related to water treatment, provide same-day service reports, maintain logbooks, and oversee subcontractors for legionella management.
4. Perform general multi-skilled duties, including work on chillers, AHUs, cleaning foul water systems, drains, and inspecting and repairing mechanical systems such as air ductwork, plumbing, and heating systems.

What you’ll bring to the role:

• Electrical/Mechanical City & Guilds, Part 1 and 2, or ’A’ and ’B’ qualifications, or equivalent.
• BMS experience and multi-skilling capability.
• Understanding of statutory compliance in HVAC and Water Treatment.
• Health & Safety IOSH Working Safely qualification or similar.
• Experience in a customer-facing role.

This role requires a minimum security clearance and may require higher-level National Security Vetting. Certain projects or sites may have UK residency requirements, and dual or multiple nationalities must be declared. Inability to meet these requirements may disqualify candidates from eligibility.

Equal opportunities

We value diversity—social backgrounds, ethnicity, disability, gender identity or expression, age, religion, sexual orientation, and other protected characteristics—and believe it fosters innovation and success. We call it Naturally Skanska.

We encourage discussions about flexibility during the interview process to explore what is possible for the role.

Reasonable adjustments

If you need adjustments during our recruitment process, please contact us at to support you.

More information about the role

This advertisement is for a job vacancy and may not include all duties or responsibilities. For a full role profile, contact us at The closing date may change at the company\’s discretion.

We are a 2024 Circle Back Initiative Employer – committed to responding to every applicant.

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