Senior Security Analyst (Detection & Response)Location: RemoteCooperation: B2B / ContractAbout the RoleWe are looking for a Senior Security Analyst to lead threat detection, incident response, and phishing analysis. The role involves optimizing detection rules, managing CrowdStrike alerts, and collaborating with security and IT teams to strengthen overall security posture.ResponsibilitiesAnalyze and respond to CrowdStrike and SIEM incidentsInvestigate and remediate phishing tickets, identifying attack patternsDevelop and tune custom detection rules (Sigma or similar)Maintain endpoint protection and troubleshoot CrowdStrike agentsDocument incidents and provide recommendations for improvementStay updated on cyber threats and phishing trendsRequirementsCCFR and CCFH certificationsStrong experience with Splunk or other SIEM platformsExperience in phishing analysis and incident responseAbility to create and optimize detection rulesAnalytical, detail-oriented, and collaborativeExperience with Defender for O365 is a plusWe OfferLong-term B2B cooperationRemote work environmentModern security tools and international projects