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Job Title


Senior Security Engineer - Crowdstrike


Company : Marlin Selection Recruitment


Location : London, London


Created : 2026-03-03


Job Type : Full Time


Job Description

OverviewBase pay range. A great opportunity for a Security Engineer to join a growing Financial Services Firm in London in a Hybrid working role. We are a Commodities focused Financial Services Firm based in London with offices in the US and Asia. We are seeking a Senior Security Engineer to join our London team.Interested in this role You can find all the relevant information in the description below.Reporting to the IT Security Officer, you will work alongside the IT Security Engineer as part of a small IT Security team. As the Senior Security Engineer, you will implement and maintain robust security systems and protocols across the 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 help mentor and develop the IT security engineer and 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 responsibilitiesManage WAF and DDoS systemsManage the Web Security GatewayManage the Email Security GatewayManage the SIEM, SOAR, Identity Protection and EDR, and respond to alerts and threatsCarry out vulnerability scans, identify risks, and remediationManage the perimeter and VPN firewallsManage MFA and SSOManage MDM/MAM and Conditional AccessManage security certificates and keysManage IDS and IPSManage PAM systemsDeliver Cyber Security Awareness TrainingRemediate vulnerabilities and weaknesses identified during penetration testingAd-hoc IT security projectsThe successful candidate will have working knowledge and experience in managing the following technology stack:CrowdStrike EDRMimecast Mail Security GatewayDuoOktaRapid7 IVM, Tenable IO or NessusRapid7 IDR or CrowdStrike Next Gen SIEMPalo Alto Firewalls and PanoramaInTune and Conditional AccessExperience using the following technology stack would be advantageous; understanding the principles is required. xjdpvnf Imperva WAF and DDoSMenlo Web Security GatewayKnowBe4Digicert Certificates and Microsoft Certificate ServicesIvanti or Automox patchingAppCheck or Tenable WASDesired Education: CISM, MS SC100, 200 and 900, OSCP or other penetration testing qualificationsIndustry: Financial services, SOC, Pentesting is desirablePersonal Skills: Excellent inter-personal, written and verbal communication skillsThe ability to handle multiple priorities, tasks and projects simultaneouslyClear and precise verbal and written communicationAbility to deliver presentations to staffCross functional influence, engagement and collaboration skillsLocation and hoursThe position is usually based in our London Head OfficeHours: 0730 1730 shift pattern with occasional home/office rotation ( two days from home, three days in the office)There will be periods of weekend and out-of-hours workJob detailsSeniority level: Mid-Senior levelEmployment type: Full-timeJob function: Information TechnologyIndustries: Financial Services and Technology, Information and MediaReferrals increase your chances of interviewing at Marlin Selection Recruitment by 2x.Get notified about new Security Engineer jobs in London Area, United Kingdom.