Office Manager

Company: Arqit

Location: London

Posted: April 18th, 2026

Arqit is a global pioneer in quantum-safe encryption: we provide a proven defence against both current cyber dangers and impending quantum threats. Our 100 staff worldwide describe Arqit as providing a positive and inclusive working environment, where staff feel that managers care about the success and well‑being of their teams, and individuals feel valued as employees.

We have a new opportunity for an Office Manager, who will also act as Executive Assistant to the CEO. In this pivotal dual role, you’ll be both the operational backbone of our Westminster office and the trusted right hand to our CEO. You’ll ensure our workspace runs seamlessly while providing high‑level executive support that enables the CEO to focus on driving our growth in one of the most exciting and competitive markets today. Your work will directly influence our ability to move fast, stay agile, and deliver on our mission to keep our clients safe.

Working on a hybrid basis, you will be based from our friendly and comfortable offices which are located conveniently close to Westminster, St James Park and Victoria stations.

What you’ll be doing

Office Management

Executive Assistant to the CEO

What we’re looking for

Please note, the ability to work in the country without restrictions is ESSENTIAL; there may also be a need for security clearance in future.

Why you’ll love it here

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