Location
Hampton Coal Wharf, London (Hybrid)

Hours
Full Time - 36 hours per week, Monday to Friday

Salary
Up to £75,000 per annum, depending on experience

About the Role
We are looking for a security-focused, results-oriented individual who thrives in a collaborative, team-focused culture. You will work closely with IT and OT network managers, suppliers, business stakeholders, service owners, and your team to ensure the delivery of secure, reliable, and resilient network services across Thames Water. As a Network Security Manager, you will lead and manage the end-to-end BAU (Business As Usual) service delivery for network security across Operational Technology (OT) and Information Technology (IT). Your responsibilities will include maintaining robust security controls, managing suppliers, mitigating operational risk, and ensuring compliance with industry standards to protect Thames Water’s critical infrastructure.

Essential Experience
- Ability to gain SC Clearance.
- IT and OT network security experience.
- Strong interpersonal skills and stakeholder engagement capability.
- Proven problem-solving and decision-making skills.
- Experience with delivery methodologies (ITIL, waterfall, agile, lean).
- Ability to explain complex network issues simply and effectively.

Essential Technical Skills & Qualifications
- CCNP, CCNA or equivalent experience CheckPoint CCSE, CCSA or equivalent experience.
- Proficiency in Layer 2/3 technologies (VLAN, RSTP, BGP, MRP) across vendors (Cisco, Meraki, Belden, Fortinet).
- Experience with network edge security (SDWAN, IPSEC) using tools like Cisco ISE, CheckPoint, and Umbrella.
- Higher education qualification or equivalent experience in engineering.
- Skills in stakeholder management, communication, and strategic decision-making.

Desirable Experience
- Previous experience in utilities or large-scale enterprises (20,000+ devices).
- Commercial acumen and change management experience.
- Ability to simplify complex network architecture for non-technical audiences.

Desirable Technical Skills & Qualifications
- Knowledge of network security technologies and strategic supplier management.
- Experience in stakeholder analysis and business case development.
- Familiarity with cloud integration (Azure and AWS).