Cybersecurity & OT Engineering Lead

EY (Ernst & Young); Greater London; Hybrid; GBP 41,000 - 69,000; Full time

Benefits offered by this job

FlexEY benefits

Continuous learning

Career development

Job summary

EY Global Services seeks a Manager in Cybersecurity to deliver complex engineering engagements across IT and OT, aligning security roadmaps with client needs and regulatory obligations. The role focuses on secure site-to-cloud connectivity, network segmentation, and mentoring junior staff.

You will contribute to business development, guide project scopes, and help build a high-performing team within EY’s global cybersecurity practice based in London, Manchester or Scotland.

Qualifications

• Experience in cybersecurity engineering across IT and OT.
• Strong network engineering skills: routing, switching, VLANs, ACLs, NAT, firewall rulebase design and optimisation.
• Experience implementing secure remote and local access and PAM.
• Willingness to travel domestically and internationally for client delivery.
• Ability to obtain UK Government security clearances.
• CCNA/CCNP-level networking competence.
• Familiarity with NCSC CAF, EU NIS2, and NIST CSF.
• OT exposure such as SCADA/PLC/HMI basics and IEC 62443.

Responsibilities

• Deliver complex cybersecurity engineering engagements across multiple sites and regions, IT and OT aligned to EY standards.
• Align security roadmaps to operational priorities, risk appetite, and regulatory obligations.
• Deliver engineering work and manage scope, schedule, resources, and risks.
• Implement security measures from blueprints: firewall configurations, network segmentation, VLANs, ACLs, site-to-cloud connectivity.
• Produce engineering artefacts including build standards and baselines.
• Foster a positive team environment by mentoring staff, conducting performance reviews, and supporting development.
• Support business development: proposal writing and client presentations.
• Contribute to recruiting and training cybersecurity professionals.

Skills

Cybersecurity engineering

Networking fundamentals

Security clearances

Travel for client delivery

OT cybersecurity awareness

Education

CISSP/CCNP/CCNA equivalent

Tools

Cisco

Fortinet

Palo Alto

Job description

EY Global Services seeks a Manager in Cybersecurity to deliver complex engineering engagements across IT and OT, aligning security roadmaps with client needs and regulatory obligations. The role focuses on secure site-to-cloud connectivity, network segmentation, and mentoring junior staff.

You will contribute to business development, guide project scopes, and help build a high-performing team within EY’s global cybersecurity practice based in London, Manchester or Scotland.