Location: Bristol, Avon, South West, UK3rd Line Infrastructure Engineer Permanent | Up to £55,000 | Bristol (hybrid)Our client is seeking a 3rd Line Infrastructure Engineer to design, implement and secure on-premises and cloud infrastructure solutions. This is a hands-on role based between the Bristol office and remote working from home.Key ResponsibilitiesDesign and deliver secure on-premises and Azure-based infrastructureImplement network security solutions including firewalls, VPNs and segmentationHarden Microsoft Server/Desktop platforms using Group Policy and security baselinesManage Active Directory, MFA (YubiKey/Authenticator) and access controlsDeploy endpoint security, EDR, Defender and DLP solutionsPerform vulnerability assessments using Tenable and drive remediationDeploy applications using on-premises tools and IntuneSkills & ExperienceStrong experience with on-premises infrastructure and Microsoft technologiesHands-on knowledge of Active Directory, Group Policy, WSUS and Certificate ServicesExperience with MFA, virtualisation and network security appliancesUnderstanding of vulnerability management, SIEM and endpoint protectionFamiliarity with security frameworks (ISO 27001, NIST, CIS, Cyber Essentials)Hold SC or DV clearance.A great opportunity to work on complex, security-focused infrastructure projects with flexible working and clear progression opportunities.TPBN1_UKTJ