Senior Administrator - National Office

GMB Union; Greater London; On-site; GBP 40,000 - 49,000; Full time

Benefits offered by this job

Final Salary Pension Scheme

Employee Assistance Programme

Childcare Assistance Scheme

Season Ticket Loan

Cycle to Work Scheme

Eye Care claim back Scheme

Annual Leave Purchase Scheme

Annual Health Check

Job summary

GMB Union is seeking a Senior Administrator to be based at National Office in London. The role supports the General Secretary’s priorities, providing high-level diary management, confidential correspondence, and multi-department coordination.

You will work with staff and lay leaders, coordinate events, and maintain records with discretion and attention to detail. London-based with a permanent contract and competitive benefits package.

Qualifications

• Strong administrative support experience is essential.
• Confidential handling of sensitive information is required.
• Excellent computer literacy with MS 365 and HR systems.

Responsibilities

• Maintain smooth running of the General Secretary’s office with high-quality admin support.
• Collaborate across departments and regions to support priorities.
• Manage complex diary, notes, and minutes for senior meetings.

Skills

MS 365

Word

Excel

SharePoint

OneDrive

People HR

GMB membership system

Administrative support

Diary management

Tools

Microsoft 365

Job description

Applications are encouraged from people who are under-represented in the union. We actively encourage Women, Ethnically Diverse/Global Majority Heritage, Disabled and LGBT+ people to apply.

JOB DESCRIPTION

GMB are seeking applications from individuals for the position of Senior Administrator to be based at National Office.

A vacancy has arisen for the position of Senior Administrator based in the GMB’s National Office. The successful post-holder will support the project management and delivery of the priorities of the General Secretary through close collaboration with the Head of Delivery.

GMB is one of the UK and Ireland’s largest general trade unions: we’re proud to represent over half a million members from across the professional spectrum and all walks of life.

As you would expect, we welcome candidates who not only meet the technical requirements of the role but who also identify with and are motivated by our values of fairness, equality, solidarity, and collective action. Our union is a strong campaigning industrial organisation.

As Senior Administrator you will:

• maintainthe smooth and efficient running of the General Secretary’s office throughproviding high-quality and dynamic administrative support to the General Secretary and the General Secretary’s office.
• Workcollaboratively and independently with colleagues across departments and Regions, lay leaders and representatives, to support the multi-facetedpriorities set by the General Secretary.
• Provide administrative support to the General Secretary, including complex diarymanagement, dealing with highly sensitive issues on behalf of the General Secretary, taking notes and minutes of internal senior meetings, as well assensitive political correspondence, ensuring issues are kept accurate andconfidential.
• Arrange events, take minutes at meetings, circulate those minutes, track actionpoints and priorities, co-ordinate training days, both for staff and layleaders, which can include booking a conference venue, overnight accommodation,and buffets.
• ExcellentIT skills with a broad knowledge of all Microsoft 365 applications includingWord, Excel, Email, One Drive, SharePoint and able to use the Internet forretrieving information. Good knowledge of People HR and extensiveknowledge of the GMB membership system.
• Excellentadministration and organisation skills.
• Excellentcommunication skills both orally and written.
• Theability to produce work to a high standard ensuring accuracy and showingattention to detail.
• Theability to work without direct supervision, use of own initiative essential andmust be prepared to use own judgement to escalates issues to someone more senioras and when required.
• Tomanage and prioritise own workload effectively, and to manage and coordinatethe teams diary events.
• Discretionand confidentiality.
• Highlyproficient in resource allocation, diary management, note taking, sustained maintenanceof ongoing projects.
• Abilityto exercise initiative in dealing with problems and identifying solutions.
• Theability to prioritise the workload and meet strict deadlines, often underpressure.
• Flexibility,adaptability and enthusiasm.
• Goodteamwork and interpersonal skills.
• Abilityto exercise empathy.
• Abilityto work under pressure.
• Experienceand extensive knowledge of the GMB, good knowledge of the Trade Union Movement.
• Thepostholder must be flexible and prepared to carry out any reasonable delegatedtasks that may be given to them.

In return, we offer excellent terms and benefits, including:

• Final Salary Pension Scheme
• Employee Assistance Programme
• Childcare Assistance Scheme
• Season Ticket Loan
• Cycle to Work Scheme
• Eye Care claim back Scheme
• Annual Leave Purchase Scheme
• Annual Health Check

This is a varied and challenging role; if you think you may be who we're looking for and if you feel you meet the criteria outlined above and within the job description, we’d like to hear from you.

National Office, 22 Stephenson Way, London, NW1 2HD

• Position: Senior Administrator
• Contract: Unspecified hours, Permanent
• Deadline to apply: Midday on Tuesday 20 October 2026
• Grade 6 (starting salary £44,378.16 per annum, plus London Weighting)