Office Administrator (Commercial)

Office Administrator (Commercial) St Asaph £28,000 - £32,000 Job 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. Skills: 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