About this role
Salary: £? - ? per year
Requirements: Strong experience with Fortinet / Fortigate firewalls (essential)Firewall policy design, auditing and optimisationNetwork segmentation, VLANs and VRF conceptsExperience working with OT or hybrid IT/OT environmentsExperienced with firewall management tools such as FortiManagerProven experience delivering audit remediation or security improvement programmesAbility to work across multiple sites and complex environments Responsibilities: Lead the hands-on remediation and standardisation of Operational Technology firewall environments across all factory sitesReview factory-based firewall configurations and identify risks and audit gapsRemove or remediate unused policies and permissive rulesEnsure firewall rules align with least privilege principlesImplement and enforce standard firewall rule sets across all sitesCorrect rule ordering and eliminate inconsistent or overly open configurationsEnsure key standard policies are consistently deployedDefine and maintain reusable policy blocks for future deploymentsSupport the migration of OT networks to a standardised architectureEstablish firewalls as the front and centre control point for all OT networksTransition away from legacy routing via the corporate coreEstablish and govern lifecycle processes for firewall rulesImplement ongoing controlsEnsure temporary rules are tracked, reviewed, and removed when no longer requiredWork with Architecture teams and specialist third parties to implement network segmentation controls within the AWS environmentDeploy and configure detection and monitoring rules to improve visibility of network traffic and access patternsSupport the review and tuning of controls to identify overly permissive access and security gapsProgressively tighten and enforce network access controls in line with agreed security standardsEnsure datacentre environments align with OT and corporate firewall and segmentation policies Technologies: AWSFirewallFortiGateSupportNetworkSecurityCloudArchitectDevOps More:
We are a leading figurehead in the UK food sector with a pedigree dating back to the early 18th century. We are seeking a Technical Specialist to join our busy Technical Services Team in a contract, hybrid role based in Southampton, with 2 to 3 days onsite and UK travel required. The position runs for 6 months and offers a rate of £550 to £700 per day outside IR35.
last updated 29 week of 2026