British Steel
Network Security Engineer
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Salary - Up to £65,000.00
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Location - Scunthorpe, North Lincolnshire, DN16 1XA
Pattern of Work – 36.5 hours, Monday - Friday
What You Need To Know About The Role
We are looking for a skilled Network Security Engineer with a strong focus on firewall technologies to join our IT Infrastructure team. This role is centered on the design, implementation, and day-to-day operation of enterprise firewall platforms, ensuring secure, reliable connectivity across our business.
You will play a key part in maintaining and improving our perimeter and internal network security controls, supporting both operational stability and project delivery. The role combines hands-on technical work with the opportunity to influence firewall architecture, standards, and long-term security posture.
Key Responsibilities
- Operate and maintain enterprise firewall platforms, ensuring secure, reliable connectivity across IT and OT environments
- Design and implement firewall rules, NAT, and segmentation to support business and industrial systems
- Lead firewall changes and troubleshooting, acting as the senior escalation point for complex network security issues
- Drive continual improvement of firewall policies, focusing on rule optimisation, hygiene, and risk reduction
- Support network design and security controls, with a focus on firewall placement, segmentation, and traffic control
- Work closely with infrastructure, OT, and application teams to enable secure and resilient connectivity
- Deliver firewall and network-related projects, including upgrades, migrations, and new site deployments
- Provide technical oversight of third parties, ensuring firewall and network changes meet operational and security standards
- Maintain clear, accurate documentation of firewall configurations and network security controls
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Essential
What we need to know about you
- Strong hands-on experience operating and supporting enterprise firewall platforms (preferably Palo Alto) in complex environments
- Proven background in network engineering, including routing, switching, and secure network design across Cisco & Aruba environments
- Experience managing firewall policies, NAT, VPNs, and network segmentation in production environments
- Practical experience with Network Access Control (NAC) solutions such as Aruba ClearPass (or Cisco ISE), including authentication and device profiling
- Experience supporting secure remote access solutions, including VPN and SSE/SASE platforms (e.g. HPE SSE) in enterprise environments
- Experience supporting multi-site environments, including remote access and site-to-site connectivity
- Demonstrated ability to troubleshoot complex firewall, network, and remote access issues under operational pressure
- Experience working in OT or industrial environments, or other high-availability, safety-critical networks
- Experience managing and assuring third-party vendors, ensuring network and firewall changes are delivered to an appropriate standard
- Strong operational discipline, including documentation, change control, and maintaining supportable configurations
Desirable
- Experience with Fortinet firewall platforms
- Experience implementing or transitioning to modern network platforms or NAC solutions
- Exposure to SSE/SASE architectures, including policy design and traffic steering
- Experience designing or implementing network segmentation, particularly in OT or industrial environments
- Knowledge of zero trust principles and modern approaches to network security
- Experience with high availability firewall designs, including clustering and failover strategies
- Familiarity with monitoring, logging, and traffic analysis tools for firewall and network environments
- Scripting or automation experience (e.g. Python, APIs) to support network and firewall operations
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What we can offer you
We know our employees are our greatest asset and alongside the great benefits packages we offer, we continue to invest in their careers by providing a huge range of training and development opportunities.
Benefits
Whatever your stage in life, you'll find a range of benefits to complement your work-life balance. The benefits you'll enjoy include:
- Defined contribution company pension scheme
- 27 personal annual leave days + statutory bank holidays
- Life Assurance
- A comprehensive Company sick pay scheme
- Health Cash Plan via our partnership with Simply health
- Employee Assistance Programme
- Standby and call-out payments
- Family friendly benefits including enhanced maternity, paternity, and adoption leave.
What You Need To Know About Us
British Steel is a leading European steel manufacturer, supplying premium long products around the world.
We take great pride in our history and heritage. Not many companies can claim to have generations of families dedicating their working lives to one company, one industry. Steel gets into your blood, and this drives the passion of our people. And these 2 values deliver our third value of performance – making the products our customers want now and in the future.
British Steel has a bright future and we want you to be part of it.
British Steel is an armed forces friendly company, and we actively encourage applications from ex-Armed Forces Personnel, Reservists, Armed Forces Veterans and military spouses/partners
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