Posted 29 July, 2026
Senior IT Security Engineer
Prime Personnel
City of London, ENG, GB
Full Time
Job Description
The Senior IT Security Engineer will work alongside colleagues as part of a 3-person IT Security team. You will implement and maintain robust security systems and protocols across the organisation IT infrastructure. You will conduct risk assessments and vulnerability scans, mitigate vulnerabilities identified in penetration testing, and implement preventative measures to protect against cyber threats. You will monitor the security infrastructure and detect and respond to potential threats. You will collaborate with the IT team to ensure compliance with security standards and best practices;you will essentially be a key technical leader in safeguarding sensitive data and systems.Key Responsibilities/Duties:Manage the Secure Web GatewayManage the Email Security GatewayCarry out vulnerability scans, identify risks, and remediationManage the perimeter and VPN firewallsManage MFA and SSOManage MDM\MAM and Conditional AccessManage security certificates and keysDeliver Cyber Security Awareness TrainingRemediate vulnerabilities and weaknesses identified during penetration testingExperience Essential:The successful candidate will have a good working knowledge and experience in managing the majority of the following technology stackCrowdStrike EDRMimecast Mail Security GatewayDuoOktaRapid7 IVM, Tenable IO or NessusPalo Alto Firewalls and PanoramaInTune and Conditional AccessEntra ID, Purview, Defender, Active Directory, DNS, GPOExperience Desirable:Cisco Secure AccessCisco UmbrellaCisco ASADigicert Certificates and Microsoft Certificate ServicesIvanti patchingKali Linux (NMAP, Metasploit, BurpSuite, John etc)Microsoft PurviewThis is a hybrid role working 3 days a week in the London office and 2 days remotely.TPBN1_UKTJ
