Administrative Assistant

Arm; Portsmouth; On-site; GBP 25,000 - 30,000; Full time

Job summary

Arm is seeking an Administrative Assistant to join our Portsmouth-based team on a 12-month contract. You will provide comprehensive admin support to the Connected Intelligence business, coordinating calendars, travel, and meetings while handling confidential information with discretion.

The role focuses on supporting engineering, PMO, quality, finance and other functions, ensuring smooth operations and timely delivery of documents and reports.

Qualifications

• Experience as a Secretary, Administrative Assistant, or similar in a large corporate/defence setting.
• Strong organisational skills with ability to manage multiple tasks and priorities.
• Excellent written and verbal communication with accuracy and attention to detail.
• Strong interpersonal skills and ability to build rapport with stakeholders.
• Discretion and ability to handle confidential information with integrity.

Responsibilities

• Act as the central point, supporting all functions within the Connected Intelligence business at Portsmouth.
• Provide support to the functions by preparing logistics and correspondence for internal and external visitors to site.
• Support the Site Director in preparing for high-profile visits.
• Manage complex calendars, schedule cross-functional meetings, and arrange travel for department heads and teams.
• Support functional heads in managing calendars and travel arrangements for assigned personnel.
• Prepare and edit correspondence, reports, presentations, and track action items from meetings.
• Gather performance metrics to compile weekly or monthly business unit reports.
• Process expense reports, purchase orders and other financial documents in line with policy.
• Support office management tasks such as ordering supplies and liaising with external vendors.

Skills

Microsoft Office Suite

Organisational & time management

Written and verbal communication

Interpersonal skills

Discretion and confidentiality

Proactive mindset

Independent and team work

Tools

Microsoft Office Suite

Job description

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