Security Engineer, Defender for Office 365

We help the world Be Everyday Ready™

Today’s threatscape is relentless. So are we. At Cyderes, we specialize in building practical IAM, exposure management, and risk programs, and stopping active threats fast with MDR that works with your existing security tools — all augmented by AI and driven by seasoned operators. Our tireless global team is laser-focused on cybersecurity, arming organizations with the people, platforms, and perspectives they need to conquer whatever tomorrow throws their way.

About the Job: We are looking for a security focused Security Engineer to support our Managed Services portfolio with a specific focus on Microsoft Defender for Office 365. The role involves daytoday operational management, configuration oversight, policy governance, and proactive reporting to help our clients maintain a strong email and collaboration security posture. The successful candidate will be customer obsessed, detail oriented, and driven by innovation and automation.

Responsibilities: :
• Manage platform configuration, ensuring alignment with best practices and client requirements.
• Oversee and maintain data connectors for security and compliance workloads.
• Administer and continuously optimize O365 security policies, including threat protection, anti-phishing, anti-malware, and safe attachments.
• Develop, implement, and finetune email security policies to enhance client resilience against evolving threats.
• Conduct ongoing policy reviews and analysis to reduce false positives and improve detection efficacy.
• Collaborate with incident response teams to support investigations related to email based threats.
• Generate and deliver monthly security posture reports, highlighting trends, improvements, gaps, and actionable recommendations.
• Present insights and reports to internal stakeholders and clients as needed.
• Leverage knowledge of Defender for Cloud and Defender for Cloud Apps (MCAS) to support integrated security scenarios.
• Experience with additional Defender suite components (Identity, Endpoint) is preferred.

Requirements: :
• Hands-on experience with Microsoft Defender for Office 365 (required).
• Working knowledge of Defender for Cloud and Defender for Cloud Apps (highly preferred).
• Exposure to other Microsoft Defender workloads such as Defender for Identity and Defender for Endpoint.
• Solid understanding of email security, threat protection concepts, and M365 security operations.
• Familiarity with SIEM/SOAR tools (e.g., Microsoft Sentinel) is beneficial.
• Coding and automation skills (PowerShell, Python, etc.) preferred.
• Strong troubleshooting, analytical, and communication skills.

Cyderes is an Equal Opportunity Employer (EOE). Qualified applicants are considered for employment without regard to race, religion, color, sex, age, disability, sexual orientation, genetic information, national origin, or veteran status.

Note: This job posting is intended for direct applicants only. We request that outside recruiters do not contact us regarding this position.