Principal Cyber Security Consultant
Datasource Londres, Royaume-UniPrincipal Cyber Security Consultant
Introduction
Company cultures & job summary
Our client is looking for a Principal Cyber Security Consultant to work across Aerospace, Defence and CNI/OT environments.
You'll need a solid background in information assurance, risk assessments and security governance, ideally with experience in either the UK Defence sector or OT/ICS environments.
This is a great opportunity to take your cyber career to the next level, working on projects that genuinely matter to national security.
Working Patterns and location - Hybrid - 2-3 days per week on site in London, Bristol or Manchester (Other offices are available so please ask if your location isn't listed)
Key responsibilities
• Provide expert cyber security advice and guidance across a range of client environments.
• Lead risk assessments, security governance activities and deployment of tailored security controls.
• Develop, review and maintain security policies, procedures and artefacts to ensure compliance.
• Manage multiple concurrent projects, balancing client and business priorities effectively.
• Communicate cyber security concepts clearly to both technical and non-technical stakeholders.
• Contribute to business development by identifying opportunities and supporting proposals.
• Build and maintain strong relationships with clients, stakeholders and team members.
• Champion continuous improvement within the security team and support junior colleagues.
Skills & experience
• Proven experience delivering technical cyber security consultancy in multi-disciplined environments.
• Strong background in information assurance, including developing ISMS and conducting risk assessments.
• Experience deploying and managing security controls aligned to business risk appetite.
• Solid understanding of Secure by Design methodology and its practical application.
• Excellent written and verbal communication skills with experience engaging stakeholders at all levels.
• Strong organisational skills with a track record of managing multiple projects simultaneously.
• Experience in the UK Defence sector with knowledge of MoD security policies such as JSP440 and JSP604.
• Ability to deliver quality security outcomes under pressure and to tight deadlines.
The client would also like to see some of the below, but this is not essential:
• Relevant professional certifications such as CISSP, CISM, CISMP or ISO27001.
• Experience conducting security assurance and accreditation activities for Defence capabilities.
• Experience segmenting and securing OT/ICS networks in CNI environments such as energy or utilities.
• Familiarity with OT cyber security standards including IEC 62443, NIST CSF or NIS Regulations.
• OT cyber security qualifications such as GICSP or IEC/ISA 62443.
• Membership of a recognised security professional body such as CIISEC, IISP or BCS.
Additional benefits
Our client is committed to providing a diverse and inclusive workplace and welcomes applications from all backgrounds.
Part-time opportunities/flexible working is available to suit individual needs.
• Pension up to 10% client contribution.
• Life assurance, income protection insurance and critical illness cover.
• Option to buy & sell holiday.
• Dental, health, medical, travel and gadget insurance.
• 24/7 Digital GP.
RECOMMEND A FRIEND: If you have professional friends/colleagues who would be interested in one of our roles and our excellent levels of service too, we'd like to recognise your recommendations with a 'thank you' of our own. For every friend you refer who then starts a role through Datasource either Contract or Permanent, we will send you £200 of Love to Shop Gift Vouchers & gift your friend £100 in Love to Shop Gift Vouchers as well!
You will be required to hold a minimum of DV Clearance. If you do not hold an active DV Clearance, please familiarise yourself with the vetting process before applying.
(c) Copyright Datasource Computer Employment Limited 2026.