Senior Mechanical Estimator

2 weeks ago

Hayes, United Kingdom Avolon M&E Full time

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.

* Presenting commercial and technical aspects of tenders for director-level approval.

* Supporting handover processes to delivery teams with clarity and accurate documentation.

* Contributing to the development of estimating systems, cost libraries and process improvements.

* Mentoring and supporting junior team members where required.

About You

We’re looking for someone who brings:

* Extensive experience in mechanical estimating within building services/M&E contracting.

* Strong technical understanding of mechanical systems and installation methods.

* Ability to interpret technical documents, drawings and specifications confidently.

* Excellent commercial awareness and understanding of tendering processes.

* Strong communication and negotiation skills with both internal and external stakeholders.

* Proficiency in estimating software and Microsoft Excel.

* A proactive, organised and detail-driven approach to managing multiple bids.

What’s on Offer

* Competitive salary £85–95k

* Strong, stable company with a healthy project pipeline

* Supportive senior leadership team and collaborative working environment

* Opportunity to shape processes and contribute to business growth

* Long-term progression within pre-construction and estimating

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