Manager, Cybersecurity, Engineering, OT Technical Consultant, TC, UKI

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

Salary: £40,500 - 68,500 per year

Requirements:

• Experience in cybersecurity with onsite experience; OT experience is desirable but not mandatory.
• Strong network engineering skills, including routing, switching, VLANs, ACLs, NAT, firewall rulebase design and optimisation, and network segmentation.
• Experience implementing secure remote and local access and privileged access, such as PAM, jump hosts, and PAW.
• Working knowledge of NCSC CAF, EU NIS2, and NIST CSF.
• CCNA/CCNP-level networking competence.
• Willingness to travel for client delivery, domestically and internationally as required.
• Ability to obtain and maintain UK Government security clearances.
• Ideally, experience with major security vendors such as Cisco, Fortinet, and Palo Alto, and familiarity with MITRE ATT&CK.
• Ideally, OT exposure such as SCADA/PLC/HMI basics, OT protocols such as Modbus, DNP3, and OPC UA, and IEC 62443.
• Ideally, experience coordinating with operations on infrastructure changes such as IP readdressing and recabling.
• Ideally, advanced certifications such as CISSP, GICSP, or CCNA/CCNP or equivalent.

Responsibilities:

• Deliver complex cybersecurity engineering engagements across multiple sites and regions, encompassing IT and OT, with alignment to our standards and client expectations.
• 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, including firewall configurations, network segmentation, VLANs, ACLs, and secure site-to-cloud connectivity.
• Produce engineering artefacts including build standards, configuration baselines, and as-built documentation.
• Foster a positive team environment by mentoring and coaching junior staff, conducting performance reviews, and supporting professional development.
• Support business development activities, including proposal writing and presentations to potential clients.
• Contribute to recruiting, retaining, and training cybersecurity professionals to help ensure a high-performing team.

Technologies:

• Cloud
• Cisco
• Firewall
• Support
• NAT
• Network
• PLC
• Security
• AI

More:

We are EY Global Services, and our Cybersecurity Consulting Practice is rapidly expanding as we invest in our capabilities to meet growing demand for cybersecurity solutions. We are seeking a Manager in Cybersecurity to help deliver technical excellence at global scale, build client relationships, and lead teams in developing innovative solutions to complex security challenges. This role is based in London, Manchester, or Scotland. We offer a competitive remuneration package, flexible working, career development, and FlexEY benefits that can support holidays, health and well-being, insurance, savings, discounts, offers, and promotions. We also provide continuous learning, transformative leadership, a diverse and inclusive culture, and the opportunity to build a meaningful career in a globally connected organization of more than 13,000 cybersecurity professionals and a wider network operating in over 150 countries and territories.

last updated 36 week of 2026