Job Summary:
We are seeking an experienced and highly motivated Principal Security Engineer to join our Engineering team. This role will lead the design, implementation, optimisation, and support of enterprise-scale security platforms and managed detection and response capabilities for a diverse customer base.
The ideal candidate combines deep technical expertise in security engineering, operational excellence, and strategic leadership. You will play a key role in supporting and evolving our Managed Security Services (MSS), improving detection and response capabilities, and mentoring engineering teams across the organisation. The role will act as the subject matter expert and technical escalation for the Engineering Team and wider business, providing advice and guidance on engineering related matters.
Experience with endpoint detection and response (EDR) and security information and event management (SIEM) technologies is essential, with knowledge of CrowdStrike Falcon strongly preferred.
Primary Responsibilities:
► Lead the architecture, deployment, and optimisation of managed security platforms and services.
► Design and maintain scalable security engineering solutions across endpoint, cloud, identity, SIEM, and network security domains.
► Serve as a technical escalation point for complex security incidents, engineering challenges, and platform integrations.
► Develop and improve security monitoring, detection engineering, automation, and response workflows.
► Collaborate with SOC, incident response, threat intelligence, and infrastructure teams to enhance customer security outcomes.
► Drive continuous improvement initiatives across MSS engineering operations and service delivery.
► Build and maintain integrations between security tools, APIs, and automation platforms.
► Evaluate emerging security technologies and recommend enhancements to managed service offerings.
► Create and maintain technical documentation, standards, and operational procedures.
► Mentor junior and senior engineers while promoting engineering best practices and operational maturity.
► Support with pre-sales activities and bid responses as required.
Required Skills and Experience:
► 8+ years of experience in cybersecurity engineering, security operations, or managed security services.
► Strong experience with enterprise security technologies, including:
o SIEM platforms
o Endpoint Detection & Response (EDR)
o Identity and access security
o Network security technologies
o Cloud security platforms
► Experience designing and supporting large-scale security environments.
► Strong knowledge of threat detection, incident response, and security operations workflows.
► Experience with scripting or automation using PowerShell, Python, Bash, or similar languages.
► Familiarity with security frameworks and best practices such as NIST, MITRE ATT&CK, CIS Controls, and Zero Trust architectures.
► Strong troubleshooting, analytical, and problem-solving skills.
► Excellent communication and stakeholder management abilities.
► Experience with managed detection and response (MDR) service environments.
► Experience integrating security tooling through APIs and SOAR platforms.
Desired skills or knowledge:
► Hands-on experience with CrowdStrike Falcon including deployment, policy management, detection tuning, and incident investigation.
► Experience with cloud platforms such as Amazon Web Services, Microsoft Azure, or Google Cloud.
► Industry certifications such as CISSP, GIAC, GCIH, GCIA, Security+, or equivalent.
► Experience leading technical projects or engineering teams.
This role requires the successful candidate to be eligible to obtain and maintain a security clearance.
The Company:
CYSIAM provide security and confidence through world-class cyber security services tailored to our clients’ individual requirements. This includes 24/7/365 detection and response through persistent overwatch of networks and data, giving our clients the best chance of protection from cyber-attack.
We are innovative, adaptable, and responsive cyber security leaders whose up to the minute expertise ensures our partners get the best-in-breed security resilience. Our team is passionate about helping people and organisations survive and thrive in the digital age.
We are a values-based organisation, trust is at the heart of what we do, and we leave our egos at the front door. We need people that are humble, have the highest integrity and want to be part of building a world class security team.
If you would like to apply for this role, please send a CV and a brief statement explaining your interest in this role and your relevant experience to