Pre - Construction Assistant QS

United Infrastructure Ltd; Dartford; On-site; GBP 26,000 - 38,000; Full time

Job summary

United Infrastructure is seeking an Assistant Quantity Surveyor to support the pre-construction team, focusing on estimating, cost planning and PCSA project commercial management.

You will assist in cost reporting, procurement support, and early supplier engagement while developing your commercial career within a fast-paced environment.

Qualifications

• Experience in a Quantity Surveying or Assistant QS role.
• Strong knowledge of cost planning, estimating and procurement processes.
• Familiarity with PCSA projects or early-stage project delivery (desirable).
• Good commercial awareness and attention to detail.
• Strong communication skills and a collaborative approach.
• Working towards professional qualifications (e.g., RICS).

Responsibilities

• Prepare detailed cost estimates and budgets based on Employer’s Requirements, drawings, and specifications.
• Support and, where appropriate, take ownership of commercial management on live PCSA projects.
• Engage with supply chain for competitive and compliant pricing; assist in procurement.
• Contribute to CVR processing and financial reporting outputs.
• Ensure adherence to commercial procedures, governance and documentation standards.
• Collaborate with Pre-Construction Managers, design teams and senior QS staff.

Skills

Quantity Surveying

Assistant QS

Cost planning

Estimating

Procurement

PCSA projects

Commercial awareness

Communication

RICS in progress

Job description

United Infrastructure is a dynamic and rapidly expanding business, focused on delivering critical infrastructure projects, across the utility and social infrastructure sectors.

Our team of highly skilled and hardworking specialists deliver innovative solutions to the complex challenges our clients face.

Our company is split into two business areas:

Utility Infrastructure

Our team of Utility Infrastructure specialists design, build and maintain critical water, energy (gas), power and telecoms infrastructure, for the UK’s largest network owners and operators.

Social Infrastructure

Our team of Social Infrastructure specialists revitalise homes and communities by carrying out a wide range of work, from retrofit to refurbishment, and maintenance.

Equal Opportunities Statement - At United Infrastructure, we are committed to making every interaction a positive and inclusive experience. If there is anything we can do to support you, remove barriers, or make the process more accessible, please let us know — we want this to be the best possible experience for you.

We are seeking a proactive and detail-oriented Assistant Quantity Surveyor to support our pre-construction team, with a key focus on estimating and managing PCSA (Pre-Construction Services Agreement) projects.

This is an excellent opportunity for someone looking to build their commercial career within a fast-paced environment, gaining exposure to complex schemes while taking ownership of cost planning, procurement support, and day-to-day commercial management during the pre-construction phase.

Key Responsibilities

Estimating & Cost Planning

• Prepare detailed cost estimates and budgets based on Employer’s Requirements, drawings, and specifications
• Support the development and validation of cost plans throughout the PCSA lifecycle
• Analyse supply chain quotations and benchmark pricing to ensure competitiveness
• Assist in identifying risks, opportunities, and value engineering options

PCSA Commercial Management

• Support and, where appropriate, take ownership of commercial management on live PCSA projects
• Track and report cost movement, changes, and risk allowances throughout pre-construction
• Assist in maintaining accurate financial records, forecasts, and reporting outputs
• Contribute to the successful transition from pre-construction into delivery

Procurement & Supply Chain Engagement

• Assist with package scoping, tender enquiries, and evaluation of subcontractor returns
• Engage with the supply chain to obtain competitive and compliant pricing
• Support early contractor involvement and build strong supplier relationships

CVR & Reporting Support

• Contribute to the Cost Value Reconciliation (CVR) process
• Provide accurate and timely data for financial reporting and forecasting
• Assist in highlighting cost risks and supporting mitigation strategies

Commercial Controls & Compliance

• Ensure adherence to commercial procedures, governance, and reporting standards
• Maintain structured documentation and cost records in line with company processes
• Support audits and ensure transparency of cost data and decision-making

Stakeholder Collaboration

• Work closely with Pre-Construction Managers, design teams, and senior QS staff
• Support coordination between design, commercial, and operational functions
• Participate in internal and external meetings where required

About You

• Experience in a Quantity Surveying or Assistant QS role, ideally within pre-construction or estimating
• Strong understanding of cost planning, estimating, and procurement processes
• Familiarity with PCSA projects or early-stage project delivery (desirable)
• Good commercial awareness and attention to detail
• Strong communication skills and a collaborative approach
• Working towards (or interested in) professional qualifications (e.g., RICS)

What We Offer

• Competitive salary and benefits package
• Structured development and career progression opportunities
• Exposure to complex, high-value projects
• Supportive team environment with opportunities to grow