Commercial Administrator

Mitie Group; Highburton; On-site; GBP 23,000 - 32,000; Full time

Job summary

Marlow e, part of Mitie, is seeking a Commercial Administrator to provide administrative and commercial support to ensure efficient delivery of contracts and projects. You will manage invoicing, records, and financial reporting while coordinating with clients, suppliers and internal teams.

The role requires experience in invoicing via client portals, strong Excel skills, and excellent organisation. You will handle purchase orders, variations, and maintain accurate databases, contributing to

Qualifications

• Experience generating and submitting invoices through client portals.
• Strong Excel and MS Office skills.
• Excellent organisational and time-management abilities.
• High accuracy and attention to detail.
• Strong communication and stakeholder management skills.
• Ability to work independently and in a team.

Responsibilities

• Process invoices and maintain records to support contract delivery.
• Liaise with clients, suppliers, and internal stakeholders for info and queries.
• Support commercial activities with purchase orders and variations.
• Prepare quotations and maintain commercial documentation.
• Communicate by phone and email to handle enquiries and messages.

Skills

Excel

Microsoft Office

Time management

Attention to detail

Stakeholder management

Communication

Teamwork

Tools

Client portals

Purchase orders system

Billing queries resolution

Job description

At Marlowe, part of Mitie Company, our people are our greatest strength, and our promise is to create a place to work where you can thrive and be your best every day. We're looking for a Commercial Administrator who will provide administrative and commercial support to ensure the efficient delivery of contracts and projects.

Role Responsibilities

• Provide administrative and commercial support to ensure the efficient delivery of contracts and projects, including processing invoices, maintaining records, supporting financial reporting, assisting with contract administration, and liaising with clients, suppliers, and internal stakeholders.
• Manage the invoicing process by preparing, validating, submitting, tracking and reconciling invoices through both internal and client portals, whilst investigating and resolving any billing queries.
• Support commercial activities by managing purchase orders, quotations and variations, preparing quotations for clients, maintaining accurate commercial records, documentation and databases, and creating tasks based on client-provided scopes and supporting documents.
• Communicate effectively with clients and stakeholders through telephone and email correspondence, answering enquiries, building positive relationships, taking messages and directing calls to the appropriate departments.
• Provide administrative support to the wider commercial and operational teams, including preparing instructions for operational delivery and ensuring all activities are completed accurately and within contractual requirements.

Previous experience in an administrative or commercial support role.

• Experience generating and submitting invoices through internal and client portals.
• Strong Microsoft Office skills, particularly Excel.
• Excellent organisational and time-management skills.
• High level of accuracy and attention to detail.
• Strong communication and stakeholder management skills.
• Ability to work independently and as part of a team to prioritise workload effectively.

What's in it for you?

• Opportunity to work within a commercially focused environment supporting contract and project delivery.
• Exposure to client-facing activities, commercial processes and operational support functions.
• Development of key skills including commercial administration, invoicing, stakeholder engagement and financial record management.