Crypto Custodian Assistant

£27,866

A Civil Service Pension with an employer contribution of 28.97%

Alongside your salary of £27,866, Ministry of Defence contributes £8,072 towards you being a member of the Civil Service Defined Benefit Pension scheme. Find out what benefits a Civil Service Pension provides (opens in a new window).

• Learning and development tailored to your role with a dedicated minimum of 5 days per year
• 25 days paid annual leave rising (by 1 day per year) to 30 days upon completion of five years' service
• Ability to roll up to 10 days annual leave per year
• In addition to eight public holidays per year, you will also receive leave for HM The King's birthday
• A Civil Service pension
• Parental and Adoption Leave
• Discounts on a range of services within and external to the civil service - Defence Discount Service, Civil Service societies for Sports and Leisure, Healthcare, Insurance, Motoring, Company discounts with Virgin, Vodafone, and Microsoft Office.
• In year rewards and 'thank you' schemes such as vouchers and gift cards
• A culture encouraging inclusion and diversity
• Find out more here - Discovermybenefits

Our people are at the heart of everything we do. It's vital that our workforce reflects the diversity of both our audience and the wider society in the UK, so we're proud to be an equal opportunities employer and we actively seek candidates from diverse backgrounds and communities. We also recognise the importance of a good work life balance, so we do everything we can to accommodate flexible working, including part-time and job shares for all our roles. Please just let us know in your application or at any stage throughout the process if this is something you want to explore.

Defence operates an organisation model in which every individual belongs to a Government Profession. The successful applicant will be posted into one of the defined Government Professions on Standard Terms of Reference for the grade. Defence reserves the right to move individuals between roles, within their allocated profession, to meet the needs of the business and in support of agile resourcing.

Defence is going through a significant transformation programme which aims to improve the way it conducts its business and delivers for Defence and the nation. As a consequence of this, all posts are/will be subject to review and potential changes, as we continuously improve across the period of the transformation programme. These changes may be minor or could be more substantive and will generate new opportunities. Throughout the transformation programme, Defence is committed to following the MOD's framework on managing and supporting people through the change process and places an emphasis on early and open consultation and engagement with personnel and Trade Unions.

Open to UK nationals only.

The MOD's digital teams ensure we remain among the most technologically advanced Armed Forces in the world. We develop and lead in cutting-edge data science, automation and cyber security solutions to protect the UK and its interests, at home and abroad.

Our mission also goes beyond the battlefield by leading humanitarian efforts and driving innovation that impacts lives across the globe.

▶ Watch to find out more about what we do.

Passionate about using your skills to make a critical difference? Your next career move could be here!

The Crypto Custodian Assistant post sits within the MOD Corsham Security and Business Resilience team. Reporting to the Crypto Custodian, you'll support the Custodians and their responsibilities, for all Cryptographic activities and advice.

Cryptography is the practice and study of methods for protecting and securing data. Cryptography utilises mathematical techniques to prevent unauthorised access to information, whilst allowing defined communities to continue to use that information.

You'll support the Crypto Custodians in respect of the discharge of all duties, regarding the cryptographic material held on charge. You'll be responsible for the safe custody, registration, mustering, amendment, issue, safe handling and disposal of Cryptographic items held at their locations and provide advice on risks to information relating to Crypto use.

Please note, this role currently operates from an underground location. Work toward re-locating to an above-ground location in the future is underway.

• Support the Crypto Custodians in accounting, management and maintenance of three large Communication Security (Comsec) accounts.
• Provide support in issuing cryptographic material, to all individuals who have a requirement to use crypto.
• Checking individual's clearances with UK Vetting Service prior to briefing and issuing Cryptographic Authorisation Certificates.
• Support regular ad-hoc auditing checks on site and at other MOD locations.
• Support annual Crypto Services for Defence (CSD) audits and musters of all holdings within the specified time and prepare for annual audits.
• Support the Crypto Custodians with destruction of material in accordance with policy.
• Attend all power outages at Corsham, and other designated sites, as required.
• Complete on-call requirements, either pre-arranged outages or urgent incidents, conducted on a rota basis and attracting an on-call allowance.

Flexible working, Full-time, Job share, Part-time

MOD Corsham, Wiltshire SN13 9NR

Apply before 11:55 pm on Wednesday 25th November 2026

490105

Administrative Officer

Permanent

Security

1

Our commitment to your development is fundamental and you'll be able to take advantage of many learning and development opportunities, tailored to your role and beyond. Whilst in post, you'll be able to gain industry recognised qualifications through a range of professional courses and external training providers, and we'll support you throughout the process. There will be a requirement to attend a 5-day Crypto course.

You may be required to attend site on occasional weekends, to support site outages - overtime or time in lieu will be offered.

There will also be a requirement to travel to meetings within the UK (or potentially occasional overseas visits).

If not already held, successful candidates will be required to attain DV clearance.

Please note this position is open to sole UK Nationals only.

We'll assess you against these behaviours during the selection process:

• Making Effective Decisions
• Communicating and Influencing
• Working Together
• Managing a Quality Service

We'll assess you against these technical skills during the selection process:

• Threat understanding (Level: Awareness)

The Government Security Profession Career Framework and the Corporate Enabler - Process Associate professional role, used in this vacancy, can be found at: Government Security Profession career framework (publishing.service.gov.uk)

In the event of a tied score at interview, the order of merit will be distinguished based on the ranking of the assessed Behaviours and Technical Skills, in the order listed above.

Feedback will only be provided if you attend an interview or assessment.

Artificial intelligence can be a useful tool to support your application, however, all examples and statements provided must be truthful, factually accurate and taken directly from your own experience. Where plagiarism has been identified (presenting the ideas and experiences of others, or generated by artificial intelligence, as your own) applications may be withdrawn and internal candidates may be subject to disciplinary action. Please see our candidate guidance (opens in a new window) for more information on appropriate and inappropriate use.

Successful candidates must undergo a basic (or equivalent) criminal record check.

Successful candidates must meet the security requirements before they can be appointed. The level of security needed is developed vetting (opens in a new window).

See our vetting charter (opens in a new window).

People working with government assets must complete baseline personnel security standard (opens in new window) checks.

This vacancy is part of the Great Place to Work for Veterans (opens in a new window) initiative.

Once this job has closed, the job advert will no longer be available. You may want to save a copy for your records.

If you feel that your application has not been treated in accordance with the Recruitment Principles, and you wish to make a complaint, in the first instance you should contact the department via email: NAD-Recruitment-Complaints@mod.gov.uk. If you are not satisfied with the response you receive from the Department, you can contact the Civil Service Commission.

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