Software Engineer
BT Group
Cheltenham, Gloucestershire, United Kingdom, Ireland
4d ago


Why this role matters

Security is the fastest-growing part of our business. In a world where the bad guys are getting smarter and cyber-attacks are on the rise, it’s more important than ever that our security teams bring their A-game.

By joining us as a Software Engineer, you’ll be able to help us change the world of the better. You’ll be developing and supporting secure applications and systems to combat cyber-crime and threats to the UK’s Critical National Infrastructure for both BT and our customers.

What you'll be doing

Joining a team of world class engineers, you’ll be working on a huge range of software engineering projects. They’re pretty varied and cover everything from malware analysis to high-speed packet processing.

And most of our unique products push the boundaries of existing technology, so you can rest assure that you’ll always be at the forefront of the industry.

Day to day you’ll :

  • Develop and deliver completely bespoke solutions, from inception right through to production
  • Design, develop, test, deploy and continually improve our software to keep us ahead of the cyber-criminals
  • Writing software on (at least) a weekly basis
  • We are a research and development team, tackling ever evolving and challenging software and cyber security problems.

    We develop highly-assured products working across a variety of environments and technologies, taking pride in everything that we deliver.

    We encourage everyone to learn, innovate and progress their careers in the direction that’s right for them.

    We'll also need to see these on your CV

    Enthusiastic software engineers with a range of backgrounds and experience. Ideally experience of multiple programming languages with a passion for problem solving, developing high-quality software and team working.

    You would need to be a hands-on practitioner in at least one of the technology areas we work in.

    These include :

  • C / C++ (STL, multi-threaded / real-time)
  • C# desktop applications
  • Windows OS internals
  • Assembly
  • Communications protocols
  • Design, development, integration, testing and support of security applications
  • Other desired skills include :

  • Other compiled and scripted languages; e.g. Objective-C, Swift, Java / JEE, Python, JavaScript, Go, Bash, PowerShell
  • Cryptography
  • Vulnerability research / Penetration testing
  • Reverse engineering
  • Knowledge of other operating systems
  • We'd also like to see :

  • A degree (or equivalent) in a relevant field of study
  • Experience working to multiple deadlines
  • Software lifecycle, issue management and version control technologies and practices; e.g. Git (using Git Flow), Bitbucket, JIRA, Scrum / Kanban
  • Due to the nature of the work our team undertake, you’ll need to be security cleared to be able to join us. This means you’ll need to meet our residency criteria*

    Why choose us?

    Security is part of our DNA we’ve been at the forefront of cyber security development ever since our very own Tommy Flowers carried out ground-breaking work in encryption with Alan Turing during the Second World War.

    And because we’ve been doing this for such a long time, we’re a truly trusted partner, so by joining us you’ll have the opportunity to work on projects and accounts that aren’t open to others.

    We’re looking for outstanding people to join our team of 3,000 experts. They shield BT and our customers - including nation states, government, armed forces, emergency services, banks and retail outlets - to keep them safe from cyber-attacks.

    We work closely with global law enforcement agencies too, all in support of a safer connected world.

    By helping us protect the entire country, the work you do will benefit everyone in the UK.

  • You must be born or naturalised British Citizen and one of your parents must be a British Citizen or have substantial ties to the UK.
  • Candidates must normally have been a resident in the UK for the nine of out the last ten years prior to their application and this is particularly important if you were born outside of the UK.

    You’ll still be considered if you have, for example, served overseas with HM Armed Forces or in some other official capacity as a representative of Her Majesty’s Government, studied abroad or lived overseas with your parents.


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