Mechanical Engineer

Sub Division: Defence

Location: London

Contract Type: Permanent

Hours: Full Time - 40 hours - Monday to Friday

Creating and maintaining great places to live and work delivered by excellent people who care…

Purpose of Role

We are seeking an experienced Lead Mechanical Engineer to take ownership of mechanical building services within a high-profile Ministry of Defence (MoD) estate in Whitehall. This role is ideal for a technically strong engineer who thrives in complex, compliance-driven environments and can lead from the front.

Job Description

This is a hands-on leadership role where you will take full technical ownership of mechanical building services across a complex, high-security government site. The role involves managing a diverse range of systems, including aged and legacy infrastructure, critical plant, and compliance-driven assets.

The environment requires a mechanically biased engineer with strong fault-finding ability and practical experience maintaining and improving older plant while ensuring system reliability. You will act as the lead mechanical authority on-site, combining day-to-day operational maintenance with project delivery in a zero-failure, mission-critical environment.

Key systems include: HVAC & environmental systems (AHUs, chillers, pressurisation), water systems (including hygiene & compliance), heating & energy systems, fuel storage and associated plant, and a combination of modern and legacy mechanical infrastructure.

Ex-military engineers are highly desirable due to transferable engineering and operational experience: Royal Navy | British Army | Royal Marines

Responsibilities

Take technical leadership of all mechanical systems and projects across the estate
Deliver Planned Preventative Maintenance (PPM) and reactive maintenance on critical mechanical plant
Diagnose faults and carry out hands-on troubleshooting of mechanical systems
Manage, maintain, and improve the performance of legacy and ageing plant
Ensure compliance with statutory regulations, safety standards, and contractual obligations
Oversee contractors and specialist service providers for both maintenance and project work
Prepare technical specifications, reports, and quotations for remedial works and upgrades
Maintain high standards of health & safety, documentation, and engineering reporting

Essential Qualifications/Skills

Strong mechanical engineering background within building services / facilities management
Experience working with older or legacy plant and infrastructure
Proven experience in critical environments (defence, healthcare, data centres, or similar)
Hands-on knowledge of HVAC systems, water hygiene compliance, pumps, valves, and pipework
Solid understanding of statutory compliance and safe systems of work

Security Requirements:

Candidates must be sole UK nationals eligible for DV clearance; they may start after SC clearance but will be shadowed on-site for approximately six months until DV clearance is granted.

In return for your hard work we offer additional training and development, 26 days holiday (+ bank holidays), generous pension contribution, life assurance and much more.

We are VINCI Facilities – experts in the built environment. VINCI Facilities is a Facilities Management and Building Solutions provider, delivering cost-effective and sustainable bespoke solutions to customers in the public and private sectors. We are committed to working towards a lower carbon society, focusing on sustainable and innovative methods to exceed our partners' goals and add value for all stakeholders – and we were named the top-ranked FM service provider in the Sustainable FM Index for 2020. We put our people first. Always working as a team and collaborating from start to finish. We are the trusted expert in the built environment because we listen to our team and create a workplace that maximises their potential.

Fairness, Inclusion and Respect (FIR) at VINCI Facilities is about recognising and celebrating each other’s differences and what they bring to the team. Harnessing this diversity and applying the experiences, abilities and unique qualities of individuals will enhance our business; therefore, we commit to equity of opportunity and fair treatment of all current and potential employees and encourage job applications from all.

Should you require any reasonable adjustments to be made as part of the application process please contact us directly.

VINCI recognises the importance of helping our employees balance their work and home life by offering flexible working arrangements across many of our roles which include working from home to enable employees to balance their working life with other priorities.

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