Associate Project Quantity Surveyor

New Yesterday

We're growing fast — and we’re looking for a commercially strong, operationally sharp Project Quantity Surveyor to help shape the next stage of our journey.

This pack outlines exactly what we’re looking for, what the role involves, and the kind of person who will thrive at Onyx.

Role Purpose

To support of all post-award commercial and scope-validation activities once a project is marked “Closed Won” in Salesforce. This includes verifying the BOQ, undertaking site surveys, preparing operational scopes and cost sheets, supporting valuations, and supporting commercial control throughout the delivery of fire doors, fire stopping, and wider passive & mechanical fire protection projects.

About Onyx Fire & Security

Onyx Fire & Security is one of the UK’s leading fire safety specialists, delivering critical life-safety systems across commercial, residential and hotel & leisure sectors.

Since 2008, we’ve focused on creating safer buildings through:

Mechanical & Electrical Smoke Control
Passive Fire Protection
Fire Engineering & Asset Management
We’re a growing, ambitious SME with a strong operational culture — and this role will be central to shaping our commercial success as we scale.

The Role:

As our project QS, you will support the estimating team and the commercial lead from the moment a project becomes live.

You’ll support the creation of scope validation, operational documentation, commercial controls and ongoing financial performance — backed by a senior QS.

You’ll work closely with the Head of Projects while overseeing project values from £200k to £3m, typically lasting 2–10 months.

What You’ll Be Responsible For

Supporting with the estimating before a project goes live
Validating sold scopes and converting BOQs into operational documentation
Visiting sites to verify quantities, access, constraints and real-world conditions
Producing Scope of Works packs and updating cost sheets
Preparing monthly valuations and signing off works completed on site
Preparing, negotiating and agreeing variations
Supporting commercial discussions with clients and internal stakeholders
Supporting projects under JCT contracts, including variations, claims and disputes
Supporting with pricing strategy, margin control and commercial forecasting
Joining the CVR meetings and looking at commercial visibility across each project
Acting as a trusted support to the Senior QS
2. Scope & Costing Documentation – working with the Senior QS to:

Produce a formal Scope of Works Pack, including drawings, schedules, measured surveys and technical clarifications.
Prepare the Operational Costing Sheet, including labour, materials, access requirements, prelims, and subcontractor packages.
Clean up / restructure sales BOQs to ensure operational clarity and compliance with BM Trada / ASFP / project-specific requirements.
3. Stakeholder & Client Interface – alongside the Senior QS:

Liaise with Project Managers, Site Managers, Sales, and the Client team to ensure all commercial matters are managed professionally.
Respond to commercial queries, RFIs, and contract-related correspondence.
Support the operational team in delivering high-quality, compliant works in line with the programme.
4. Compliance & Quality

Ensure all commercial outputs align with compliance frameworks (BM Trada, ASFP, Building Safety Act, and client-specific standards).
Support the creation of design packs and technical documentation where required.
About You: The Person Who Will Excel Here

We’re looking for someone who combines commercial sharpness with operational instinct — someone who thrives in a role with both structure and autonomy.

Experience & Technical Strengths

5+ years QS experience (ideally in a specialist subcontractor)
Excellent document-production and client-facing communication
Solid Excel/Sheets skills and BOQ understanding
Experience supporting with valuations, variations and financial control
Chartered Surveyor (RICS) or equivalent
Experience working with Salesforce, OneTrace, Procore or similar systems beneficial.
Understanding of BM Trada schemes / ASFP guidance / BSA Golden Thread requirements beneficial.
Full UK driving licence.
Traits & Mindset

Commercially ambitious with strong attention to detail
Proactive, structured and able to work independently
Confident in negotiations and client conversations
Comfortable in a fast-moving, scaling SME environment
Strategic thinker with the ability to forecast, challenge and improve processes
Why Join Us?

This isn’t just another QS role — it’s a chance to shape the commercial direction of a growing specialist contractor.

You’ll get:

A pathway to Senior QS & Commercial Manager
Direct influence over profitability, strategy and operational excellence
Exposure to high-profile, prestigious estates across London & the UK
A high-performance, digitally-enabled working environment
25 days holiday + bank holidays
Pension + ongoing development opportunities
How to Apply:

If you are intersted in this position and would like to learn more we would love to hear from you.  Please attach your CV to the link provided and we will be in contact
Apply
Location:
Bermondsey
Salary:
£45,000 - £55,000 /annum
Job Type:
FullTime
Category:
Construction

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