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Salary
≈ $52k – $138k per year (Estimated)
Location
In office (London)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 27, 2026. Iron Mountain scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Iron Mountain is a records and information management company headquartered in Portsmouth, New Hampshire, providing document storage, digital transformation, data center, asset lifecycle management and fine art logistics services. Founded in 1951 and listed on the New York Stock Exchange as a real estate investment trust, it reports about 225,000 customers worldwide and runs warehouses and facilities across the Americas, Europe, Asia and Australia. It hires warehouse associates and specialists, CDL and non-CDL route drivers, imaging and logistics supervisors, customer care associates, document management assistants and sales executives.

At Iron Mountain we know that work, when done well, makes a positive impact for our customers, our employees, and our planet. That’s why we need smart, committed people to join us. Whether you’re looking to start your career or make a change, talk to us and see how you can elevate the power of your work at Iron Mountain.

We provide expert, sustainable solutions in records and information management, digital transformation services, data centers, asset lifecycle management, and fine art storage, handling, and logistics. We proudly partner every day with our 225,000 customers around the world to preserve their invaluable artifacts, extract more from their inventory, and protect their data privacy in innovative and socially responsible ways.

Are you curious about being part of our growth story while evolving your skills in a culture that will welcome your unique contributions? If so, let's start the conversation.

Crozier is a global leader in fine art logistics and services, offering comprehensive solutions for the storage, transportation, crating, installation, and management of art. With over 45 years of experience, they operate across three continents with 38 locations and 12 global markets, boasting over 1.8 million square feet of fine art storage. They are known for their commitment to care and discretion, serving leading artists, collectors, galleries, and institutions worldwide, and are also investing in next-generation technology and sustainable practices.

You'll have the unique opportunity to work with some of the world's most valuable art and collaborate with leading galleries, museums, and private collectors. Crozier is a global leader in fine art logistics, offering unparalleled exposure to significant cultural heritage.

Job Summary

Iron Mountain is seeking a detail-oriented and proactive Client Services Administrator to join our Crozier team.

In this role, you will be responsible for driving end-to-end administrative coordination, managing billing accuracy, tracking accounts receivable, and streamlining operational workflows to deliver an exceptional client experience.

You will join a dynamic, collaborative team dedicated to providing bespoke logistics, art handling, and collections care solutions for prestigious global clients.

What You’ll Do

  • Review project estimates against final billing, resolve invoice discrepancies, and ensure services are accurately billed or accrued within month-end timelines.
  • Partner closely with Sales, Account Management, and operations teams to execute smooth vendor onboarding, order system management, and cross-departmental task follow-up.
  • Maintain structured, accessible digital archives and enforce strict adherence to operational service level agreements (SLAs) and organizational standards.
  • Actively review account payment statuses, resolve complex billing inquiries in partnership with credit control teams, and produce weekly bad debt reporting with enforced pre-payment measures.
  • Deliver weekly cost tracking, produce ad hoc reporting to support leadership decision-making, and leverage AI tools to automate workflows and drive departmental efficiencies.

What You’ll Bring

  • Proven administrative support experience within a fast-paced, professional business environment.
  • Strong knowledge of billing administration, accounts receivable procedures, and general financial compliance.
  • Proven ability to streamline operational workflows using AI/digital tools, manage multi-stakeholder relationships, and solve complex administrative issues.
  • Exceptional attention to detail, strong organisational capability, and the ability to handle confidential commercial information with complete discretion.

What's in it for you?

  • Consistent Schedule: Monday to Friday, following typical office hours
  • Competitive Salary Rewarding your expertise and dedication, as well as overtime & additional rates for trips
  • Generous Leave: 23 days annual leave + bank holidays, increasing with length of service.
  • Your Well-being First: We offer Private Medical Insurance and a confidential Employee Assistance Program (EAP) for you and your family's health and life needs.
  • Secure Your Future: Benefit from our generous pension scheme, with Iron Mountain contributing 6.5%, plus Life Assurance covering four times your annual salary.
  • Perks for Your Lifestyle: Enjoy a range of voluntary benefits like Dental Insurance, a Bike to Work scheme, fitness membership discounts, and an Electric Vehicle Scheme.

Category: Administrative Services

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