To apply direct for this role please visit Civil Service Jobs and quote ref no. HMRC Security are part of HMRCs Chief Digital Information office (CDIO) and support HMRC to assess business and reputational risks in one of the largest IT estates in Europe.? Cyber Security Technical Services (CSTS) are integral part of HMRC Security. We are responsible for ensuring everyone has capability to fulfil their security responsibilities and develop individual capability to detect, prevent and respond to security risks and threats.? Our vision is to be recognised as a centre of expertise, working collaboratively across government to deliver holistic, customer centric cyber security services and consultancy support that continually evolves to emerging technologies and the ever-changing threat and risk landscape to support HMRC/HMG business needs. This is an exciting time to be part of our active and encouraging cyber security community, working within HMRC and across HMG. Job description As a Principal Cyber Security Professional, you will play a leading role in securing HMRCs services, to ensure the best possible technical security risk-based advice is given to our customers.