Job Description

Administrative Assistant in Portsmouth, Hampshire

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Location

Portsmouth, Hampshire

Salary

Negotiable

Contract

Contract

Administrative Assistant

12 month contract

Based in Portsmouth

Offering £20ph Inside IR35

Do you have experience as an Administrative assistant, Secretary, or similar within a large corporate/defence industry setting?

Are you proficient in Microsoft Office Suite?

Do you want to work with an industry-leading company?

If your answer to these is yes, then this could be the role for you!

As the Administrative Assistant, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry.

You will be involved in:

  • Act as the central point, supporting all functions (Engineering, PM, PMO, Quality, Finance etc.) within the Connected Intelligence business at Portsmouth.
  • Provide support to the Functions in preparing all logistics and correspondence for internal and external visitors to site
  • Support the Site Director in preparing for any high-profile visits
  • Manage complex calendars, schedule cross-functional meetings, and book local and international travel for department heads and teams
  • Support the Functional heads in managing and maintaining complex calendars, scheduling meetings, appointments, and travel arrangements for assigned personnel
  • As required by functional heads, prepare and edit correspondence, reports, presentations, and other documents, and track action items from high-level divisional meetings
  • Gather performance metrics from various teams to compile weekly or monthly business unit reports
  • Process expense reports, purchase orders, and other financial documentation in accordance with company policies
  • Support office management tasks such as ordering supplies, managing facilities requests, and liaising with external vendors

Your skillset & experience:

  • Experience as a Secretary, Administrative Assistant, or in a similar support role, preferably within a large corporate or defence industry setting
  • Organisational and time management skills with the ability to prioritise effectively and manage multiple tasks simultaneously
  • Advanced proficiency in Microsoft Office Suite (Word, Excel, PowerPoint, Outlook)
  • Excellent written and verbal communication skills, with a keen eye for detail and accuracy
  • Strong interpersonal skills and the ability to build rapport with diverse stakeholders
  • Discretion and ability to handle confidential information with integrity
  • Proactive attitude with a strong sense of initiative and problem-solving abilities
  • Ability to work independently and as part of a team in a fast-paced environment

If this all sounds like something you will be interested in then simply apply and we can discuss the opportunity further!

Administrative Assistant

12 month contract

Based in Portsmouth

Offering £20ph Inside IR35

Disclaimer

This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more complex resource solutions. Our specialist recruitment divisions cover the entire technical arena, including some of the most economically and strategically important industries in the UK and the world today. We will never send your CV without your permission. Where the role is marked as Outside IR35 in the advertisement this is subject to receipt of a final Status Determination Statement from the end Client and may be subject to change.

Job reference 130879_1790838937
Date posted 01 October 2026

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Declan Nesbit

Declan Nesbit

Senior Account Consultant

+44 (0)2392 228 226

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