Installation Administrator in London

• Administrator
• Base Location: Mitie Head office - Northampton
• Hours per Week: 40
• Job Overview

This role involves liaising and working with various areas and stakeholders, requiring the ability to communicate both verbally and writtenly in a highly professional manner.

You will build effective and trusted customer relationships and deliver on KPI targets within the electronic security sector.

Internally you will interact across the business with engineering and administration teams, sub‑contractors and suppliers.

Management information dashboards and trackers will be updated in accordance with agreed timescales as part of the role.

• Role Objectives and Responsibilities
• Build and maintain effective customer relationships.
• Act as the first point of contact for all customer, supplier and contractor calls, ensuring a professional and responsive service.
• Support service delivery and communication within the installations department.
• Liaise with internal teams, subcontractors and suppliers to ensure smooth workflow.
• Maintain accurate and up‑to‑date customer records.
• Keep customers informed on project and work order progress.
• Manage administrative tasks promptly and respond to job‑related queries.
• Provide ad‑hoc support to the service desk as required.

Main Duties

• Handle and process customer enquiries and all associated communications.
• Ensure compliance by verifying engineer/subcontractor documentation is complete and accurate.
• Raise and process invoices and ensure all supporting documents are correctly filed.
• Confirm purchase orders are in place before work begins and monitor spend levels, escalating when authorisation is required.
• Collaborate with internal departments to resolve customer issues.
• Chase subcontractor paperwork and ensure timely invoicing.
• Maintain accurate system records, including call logs and customer information.
• Raise and track purchase orders, monitor delivery updates and liaise with contractors.
• Follow all BMS procedures and ensure performance targets and SLAs are met.
• Order parts in line with contract requirements.
• Handle complaints professionally and escalated to management when needed.
• Maintain all work‑order trackers.
• Carry out any additional duties assigned by management.
• What we are looking for
• Strong customer service and relationship‑building skills with a professional telephone manner.
• A dependable team player able to work independently when required.
• Excellent communication and organisational abilities.
• Proficient in Microsoft applications.
• Commercial awareness, ideally with experience working to SLAs and KPIs.
• Enthusiastic, customer‑focused, and committed to delivering high standards of service.
• Able to take ownership of issues and support resolution collaboratively with engineers and contractors.
• Experience with CASH or similar work‑order systems is desirable.
• Security and Health & Safety
• Follow Group and company policies and procedures at all times.
• Report any apparent deficiencies in systems of work or equipment that may result in failure of service delivery or risk to health and safety or the environment.
• Use all work equipment and personal PPE properly and in accordance with training received.
• Report any issues or training needs to your line manager and/or via your divisional incident reporting system.

Benefits

Mitie offers a comprehensive benefits package that includes a virtual GP, financial wellbeing assistance, a flexible lifestyle benefits platform (Choices), the ability to purchase extra holiday days, critical illness insurance, dental treatment, technology product discounts, high street retailer discounts through Mi Deals, a cycle‑to‑work scheme, life cover up to four times salary, enhanced pension contributions, a save‑as‑you‑earn scheme and a Mitie Matching Share Plan.

Employees are also recognised with Mitie Stars, which include monthly cash prizes and the chance to win a £10,000 top prize at year‑end.

Commitment to Equality and Diversity

We are committed to ensuring our recruitment process is inclusive and accessible to all.

If you have a disability or long‑term condition (for example dyslexia, anxiety, autism, a mobility condition or hearing loss) and need us to make any reasonable adjustments or changes during the recruitment process, please let us know by emailing at

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