Administration Assistant

Office Administrator – Permanent – Full Time (Onsite)

• Salary £26,090
• 25 days annual leave (inclusive of December shutdown)
• Buy or sell up to 5 days’ leave
• Two pension schemes
• Private Medical & Dental Insurance
• Life Assurance (4 x salary)
• Save and share schemes
• Electric/Hybrid car leasing
• Cycle to work
• Retail discounts
• Continuous Professional Development
• Annual Wellness Allowance… (and more, here)

Why this role matters

Our Little Paxton office is a key operational hub for MASS.

As the business continues to grow, so does the need for a well‑run, organised and professional working environment. This role sits at the centre of that.

As an Office Administrator, you’ll ensure the day‑to‑day running of the office is smooth, efficient and professional, supporting both staff and visitors and helping maintain the standards expected in a secure, high‑performing environment.

This is a varied role where no two days are the same, and where attention to detail and organisation make a real difference.

What you’ll be working on

You’ll provide front‑of‑house and administrative support to the Little Paxton office, ensuring everything runs effectively behind the scenes.

You’ll:

• Act as the first point of contact for visitors, providing a professional front‑of‑house experience
• Manage meeting rooms, bookings and hospitality arrangements
• Support the maintenance of office diaries, room allocations and staff availability
• Monitor and manage office supplies, stationery and general housekeeping
• Assist with travel arrangements for staff where required
• Support the management of the company vehicle fleet (servicing, logs and upkeep)
• Handle incoming and outgoing mail and deliveries
• Assist with arranging internal events, meetings and corporate functions
• Support the preparation and printing of bid, project and training documentation
• Assist with administrative processes including document registers and basic finance tasks
• Maintain a tidy, organised and professional office environment

You’ll also support the wider administration team with general tasks as required.

Location

This role is based full time at our Little Paxton office (Enterprise House, PE19 6BN).

This is an on‑site role, as you’ll be supporting the day‑to‑day running of the office and acting as a key point of contact for staff and visitors.

How you’ll support us

You’ll help create a well‑organised, professional and welcoming environment for both employees and visitors.

That means:

• Taking ownership of day‑to‑day administrative tasks
• Managing your workload and priorities effectively
• Communicating clearly with colleagues at all levels
• Maintaining high standards in everything you do
• Being proactive and stepping in where support is needed

The invaluable experience you’ll bring, to help us achieve more

We’re looking for someone organised, reliable and professional, who enjoys working in a varied, people‑facing role.

Essential

• Strong interpersonal and communication skills
• A professional approach when working with staff and visitors
• Ability to manage and prioritise your own workload
• Basic IT skills and willingness to learn new systems
• Full UK driving licence

Our non‑negotiables

Due to the highly secure nature of the projects we do, you must be:

• A UK National and eligible to work in the UK
• Eligible to obtain and maintain a UK Government Security Check (SC) (see guidance here: Gov.uk guidance)

Who is MASS?

MASS is an independent, global technology company, trusted by highly secure organisations to provide advanced digital services that manage data and keep information safe.

With a strong heritage in defence, we deliver specialist capabilities across electronic warfare, cyber security and data systems, working in close partnership with our customers to solve complex, real‑world problems.

We are large enough to deliver at scale, but small enough that your work is visible, valued and impactful.

Apply today to see how working for MASS could work for you.