Senior Mechanical Estimator

Salary: £85,000 – £95,000 Location: West London / Hayes (Office-based) + site visits as required (all London based sites) Type: Full-time, permanent Benefits: Company pension, Cycle to Work Scheme, Life Insurance, Employee Assistance Programme (EAP)

A leading Building Services Contractor is seeking an experienced Senior Mechanical Estimator to join their growing pre-construction team. This is a senior role within an established M&E business, offering long-term stability, strong career progression, and the chance to influence and improve estimating processes across multiple projects.

The Role

As a Senior Mechanical Estimator, you will play a key part in securing new business and ensuring tenders are prepared accurately, competitively, and in line with company standards. Responsibilities include:

* Preparing, analysing and submitting mechanical tenders across a diverse range of building services projects.

* Carrying out detailed take-offs, cost build-ups, and analytical estimating.

* Reviewing tender documentation, drawings, specifications and contractual requirements.

* Managing supplier and subcontractor enquiries to obtain competitive and compliant quotations.

* Identifying risks, opportunities, and value-engineering options during pre-construction.

* Liaising with internal teams, senior leadership, clients, consultants, and supply chain partners.

* Pres...