SDE Consultant

Roc Technologies

Senior Security & Infrastructure Engineer in Managed Services supporting high-profile customer. Leading security operations and infrastructure protection with a focus on service excellence.

Posted 5/2/2026full-time🇬🇧 United KingdomMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AzureCloudFirewallsITSMSwitchingVMware

About the role

Key responsibilities & impact

Monitor and respond to security alerts, threats, and incidents across infrastructure and cloud environments
Investigate complex incidents (malware, phishing, unauthorized access, vulnerabilities)
Implement and maintain security controls across systems and endpoints
Secure servers, networks, and cloud platforms in line with best practices
Manage identity and access controls (Active Directory, Azure AD, privileged access)
Oversee patching, system hardening, and configuration management
Lead security onboarding using tools like Microsoft Defender and Purview
Lead technical investigations and remediation activities
Conduct root cause analysis and recommend preventative measures
Support forensic investigations when required
Perform vulnerability assessments and coordinate remediation
Identify risks and recommend security improvements
Collaborate across teams to reduce organizational risk
Act as the senior escalation point for complex issues
Support and mentor Service Desk and 2nd/3rd Line engineers
Provide technical input into new managed service opportunities
Support compliance frameworks (ISO 27001, Cyber Essentials, NIST)
Assist with audits and ensure adherence to policies and standards
Enhance processes, tooling, and documentation
Drive automation and improved monitoring capabilities
Stay current with emerging threats and technologies

Requirements

What you’ll need

5+ years in a Managed Services environment
Strong knowledge of security operations and infrastructure security
Experience with Microsoft 365, Azure, and cloud security
Virtualisation experience (VMware & Azure)
Backup solutions (Veeam, Azure Backup)
Networking knowledge (routing, switching, VLANs, firewalls, VPNs)
Experience with SIEM and security monitoring tools
Familiarity with Microsoft Defender, Endpoint Protection, or similar tools
Strong understanding of ITIL frameworks
Excellent communication and stakeholder engagement skills
Security certifications (CompTIA Security+, Microsoft SC-200/300/100) are desirable
Knowledge of ISO 27001, NIST, CIS benchmarks
Experience with ITSM tools
BPSS or SC Clearance

Benefits

Comp & perks

Travel to customer and Roc offices may be required
Participation in a 24/7 on-call rota (subject to approval)
Occasional out-of-hours work for maintenance/releases (TOIL provided)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

security operationsinfrastructure securityvulnerability assessmentsincident investigationidentity and access managementsystem hardeningconfiguration managementautomationnetworkingcloud security

Soft Skills

communicationstakeholder engagementmentoringcollaborationleadershipproblem-solvingroot cause analysisrisk assessmenttechnical inputprocess enhancement

Certifications

CompTIA Security+Microsoft SC-200Microsoft SC-300Microsoft SC-100ISO 27001NISTCyber EssentialsCIS benchmarksBPSS ClearanceSC Clearance