Overview
Office Administrator (Commercial) – St Asaph | £28,000 - £32,000
Responsibilities
* Collate, verify, and manage cost documentation to support payment applications on reimbursable and target cost projects.
* Validate subcontractor invoices against purchase orders, delivery records, and commercial trackers.
* Maintain accurate commercial trackers, logs, and cost data (applications, invoices, POs, variations, minor works).
* Assist with the preparation and administration of minor works and low-value subcontract agreements.
* Input and maintain cost and estimating data within BES and Excel-based reporting tools.
* Produce clear Excel reports to support QSs, Project Managers, and Commercial Leads.
* Support financial controls by tracking spend, commitments, and invoice status.
* Manage front-of-house duties, including visitors, calls, post, and courier deliveries.
* Oversee day-to-day office management, facilities coordination, supplies, and meeting logistics.
* Provide general administrative support, including document control, filing, correspondence, and onboarding.
* Maintain business and commercial records in line with document control, data management, and governance procedures.
* Manage SharePoint and document management systems, ensuring accurate version control, metadata, and file integrity.
* Work collaboratively with internal teams while maintaining high standards of accuracy, confidentiality, and professionalism.
Qualifications
* Strong IT capability with advanced Microsoft Excel skills, including use of formulas, filters, lookups, structured spreadsheets, and basic data analysis to support commercial and office reporting.
* Competent in Microsoft Word and Outlook, with the ability to produce clear, professional documents and correspondence.
* Experience using accounting and/or commercial systems to retrieve cost information, support cost reporting, and maintain accurate financial records.
* Familiarity with Benchmark Estimating System (BES) or similar estimating / cost management software (training can be provided).
* High level of numeracy, with confidence working with cost data, invoices, trackers, and financial information.
* Highly organised, with the ability to manage multiple tasks, prioritise workload, and maintain accurate records in a busy office environment.
* Strong attention to detail, with a consistent focus on accuracy and data integrity.
* Clear and professional written and verbal communication skills, capable of dealing confidently with internal teams, suppliers, and visitors.
* Ability to work independently, take ownership of tasks, and manage day-to-day office and administrative responsibilities without close supervision
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