Maths & Cryptography Roles

At GCHQ, we unlock the complex world of data and communications to keep the UK and its citizens safe, both in the real world and online. Working closely with our British Intelligence partners in MI5 and MI6, we protect the UK from threats including serious organised crime, terrorism, and cyber-attacks. A role in GCHQ means you’ll have varied and fascinating work in a supportive and encouraging 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 varied, complex and vital problems. And the solutions you find? They’ll help to protect the UK. 

Working across cryptography, cryptanalysis, network exploitation, cyber security, data science, machine learning 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. 

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 2024, 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. 

If you’ve obtained or are in the final stages of completing a doctorate, or if you have equivalent experience, we’ll consider you for a position at the higher end of the salary range. But please note there are limited opportunities available at the higher salary, and most successful candidates will be offered at £32,092. 

• A recruitment bonus of £4,420 when you start 
• 25 days’ annual leave automatically rising to 30 days after 5 years’ service, and an additional 10.5 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 

Job contact :

• Name : careers@recruitmentteam.org.uk
• Email : careers@recruitmentteam.org.uk

Recruitment team

• Email : careers@recruitmentteam.org.uk