Job summary

GCHQ�is an intelligence, cyber and security agency with a mission to keep the UK safe. We use cutting-edge technology, ingenuity and partnerships to identify, analyse and disrupt threats. Working with our intelligence partners�MI5�and�MI6,�we�protect the UK�from terrorism, cyber-attacks and espionage.�At GCHQ you�ll do varied and fascinating work in a supportive and inclusive environment that puts the emphasis on teamwork.

Our work is complex, unique and ever-changing � and it�s informed by the amazing work of our Mathematics and Cryptography teams. In this exciting role, we�ll train you to use your mathematical thinking to tackle a variety of critical problems. And the solutions you find? They�ll help to protect the UK.

Job description

Working across cryptography, cryptanalysis, network exploitation, cyber security, data science, digital signals and mathematical modelling (to name just a few areas), you�ll receive support and mentoring as you learn to become a maths and cryptography specialist.

Collaborating with colleagues in multi-skilled teams, you�ll help solve an incredible range of interesting problems. In a typical day you might: evaluate an existing theorem, or develop a new one; use some of Europe�s most powerful computers to deliver world-class input on vital security projects; study or design a new cryptographic protocol; apply your analytical skills to a broad range of mathematical disciplines including algebra, probability, number theory, statistics and optimisation; and complete projects which influence some truly key decisions made by government agencies.

With expert training and development opportunities, you�ll be working as a specialist in no time, producing innovative and one-of-a-kind work which has meaningful purpose. And because of what we do and who we are, our methods and practices are constantly changing so they stay cutting-edge � which means your learning and growth won�t ever stop. This is a role with so much potential, and it could be just the beginning of your career at GCHQ.

Person specification

To reflect the developing challenges we face, you�ll need a background in maths, computer science or any other subject with substantial mathematical content. You should have, or expect to obtain by September 2025, at least a 2:2 undergraduate degree (or equivalent qualification) in a mathematical discipline, including (but not limited to) mathematics, computer science, statistics or physics.

You�ll also love solving problems, be able to juggle competing demands and have an ability to easily adapt to new circumstances. You�ll enjoy contributing as a member of our team in a way that suits you. Your intellectual curiosity means you�re excited by the chance to train in specialist areas. And you�ll be motivated by the challenge of learning new things at a fast pace, while being supported by your colleagues and mentors to do so. It�s also great if you have an interest in technology, or experience in programming � but this isn�t essential, and we�ll train you in everything you need to know.

Benefits

At GCHQ we�re proud of our inclusive and supportive working environment. As an organisation that values and nurtures talent, we�re committed to helping you fulfil your potential. You�re not expected to come to us with all the relevant knowledge, or skills, on day one. With comprehensive training and development opportunities, tailored to your personal needs and the requirements of your work, we�ll enable you to flourish in your role and perform to the very best of your abilities.

As a new starter, you�ll join the Mathematics Development Program (MDP) which provides substantial internal training, covering both mathematical and technological topics. In addition to the training, your cohort will learn about other roles in the mathematical community from other people in the MDP. You�ll remain part of the MDP community for the first three years of your career, allowing you to build a strong peer support network. We�ll also ensure you�re assigned a mentor when you start who can help you identify and work towards your personal career goals.

On top of the initial training, there are opportunities to attend additional training courses, and you�ll always be encouraged to learn new things and develop yourself in your role. Throughout your career you�ll have the opportunity to move between roles, enabling you to either broaden your experience or to become a specialist in a particular area.

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Rewards and Benefits

You�ll receive a starting salary of �34,663 plus other benefits including:

A recruitment bonus of �4,513 when you start 25 days� annual leave automatically rising to 30 days after 5 years' service, and an additional days of public and privilege holidays Opportunities to be recognised through our employee performance scheme Opportunities to work flexibly, subject to business needs Excellent pension scheme Cycle to work scheme Facilities such as a subsidised gym and restaurant, and on-site coffee bars Paid parental and adoption leave

Equal Opportunities

At GCHQ diversity and inclusion are critical to our mission. To protect the UK, we need a truly diverse workforce that reflects the society we serve. This includes diversity in every sense of the word: those with different backgrounds, ages, ethnicities, gender identities, sexual orientations, ways of thinking and those with disabilities or neurodivergent conditions. We therefore welcome and encourage applications from everyone, including those from groups that are under-represented in our workforce such as women, those from an ethnic minority background, people with disabilities and those from low socio-economic backgrounds.

Find out more about our culture, working environment and diversity on our .

We�re Disability Confident

GCHQ are proud to have achieved Leader status within the DWP�s Disability Confident scheme. This is aimed at encouraging employers to think differently about disability and take action to improve how they recruit, retain and develop disabled people. Being Disability Confident, we aim to offer an interview to any candidate who self-identifies as disabled and meets the essential criteria for the role. This is our �Offer of Interview� (OOI). To secure an interview for this vacancy, the essential criteria (in order of application process) are:

To hold, or expect to obtain by September 2025, a undergraduate degree in a mathematical discipline