Commercial Assistant

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

Equal Opportunities Statement – At United Infrastructure, we are committed to making every interaction a positive and inclusive experience.

Location:

Hemel Hempstead (with travel to sites as required). Job Type: Permanent, Full‑time. Salary:
Competitive (depending on experience).

We are looking for a commercially aware and motivated Commercial Assistant to join our growing team. This is a great opportunity to support the delivery of a variety of projects, comprising a mix of Planned, Voids & refurbishment contracts within the social housing sector, while developing your career in a fast‑paced environment. In this role, you will support the Commercial Lead and wider project team to ensure projects are delivered on time, within budget, and to the required standards.

You will play a key part in managing financial processes, supporting reporting, and maintaining strong commercial control across projects.

• Support the Commercial Lead and project teams to deliver projects on time and within budget.
• Assist with the commercial management of projects to maximise value and performance.
• Support the preparation and submission of monthly applications.
• Price new work orders using the pre‑agreed pricing structure (for example, using NHF pricing Schedule).
• Assist with forecasting and monitoring project costs.
• Ensure projects comply with contractual, legal, and quality requirements.
• Prepare and contribute to monthly commercial reports, cash‑flow forecasts, and budgets.
• Support supply chain management and subcontractor coordination.

• Minimum 2 years’ experience in a similar Commercial Assistant or finance‑related role.
• A background in accounting or finance is desirable.
• Strong organisational skills with close attention to detail.
• Good communication and interpersonal skills.
• Ability to build effective working relationships.
• Confident in influencing and negotiating where required.
• Ability to work to deadlines and manage competing priorities.
• Proactive and methodical approach to work.

Qualification in Finance, Accounting, Quantity Surveying, or a related field (desirable).

• 23 days of holiday per year, excluding Bank Holidays (plus more days with length of service).
• Up to £2,000 reward for successful recommendations as part of our referral scheme.
• Significant savings on daily shopping through our benefits portal.
• A welcoming office, snacks, beverages, friendly colleagues and team socials throughout the year.
• A supportive culture and a great team with exceptional talent and experience.
• Trained Mental Health First Aiders support.
• Annual training budget to focus on your personal and professional development.
• And more…