Senior Security Engineer

We are seeking a Senior Security Engineer to design, implement, and continuously improve enterprise security capabilities across endpoint, cloud, network, data, and security operations environments.

This is a hands‑on senior engineering role responsible for the architecture, implementation, integration, and optimization of core security platforms, including Rapid7, Microsoft Defender, Microsoft Purview, Mimecast, and Zscaler. The engineer will serve as a technical owner for these platforms and translate security requirements and identified risks into scalable technical controls.

The role works closely with Security Operations, Infrastructure, Network, Cloud, and Application Engineering teams and requires the ability to independently lead complex technical initiatives and solve problems across multiple technology domains.

This position is hybrid 4 days a week in office.

• Serve as a senior technical owner for enterprise security platforms, leading complex implementations, integrations, migrations, and major technology changes.
• Establish scalable security architectures, engineering standards, and configuration baselines aligned with secure-by-design, defense-in-depth, and Zero Trust principles.
• Evaluate existing and emerging capabilities to close security gaps, improve effectiveness, simplify the technology environment, and provide senior‑level technical guidance across engineering teams.

• Engineer and evolve Rapid7 InsightIDR and supporting SIEM capabilities, including telemetry, detection logic, correlation, alerting, and visibility across enterprise environments.
• Partner with Security Operations and MDR providers to improve detection coverage, reduce operational noise, and translate lessons from incidents into improved controls.
• Develop SOAR workflows and platform integrations that automate enrichment, investigation, response, remediation, and other security processes.

• Engineer and evolve Rapid7 InsightVM capabilities to provide comprehensive and actionable vulnerability visibility across endpoints, servers, network infrastructure, and cloud workloads.
• Improve vulnerability prioritization and remediation by incorporating severity, exploitability, asset criticality, and environmental context.
• Partner with technology teams to identify coverage gaps, validate remediation, and improve vulnerability management through automation and platform integration.

• Engineer and optimize Microsoft Defender capabilities across enterprise endpoints, servers, cloud workloads, and Microsoft 365 environments.
• Design and maintain preventative and detective controls, including endpoint protection, attack surface reduction, threat protection, and related security policies.
• Engineer Microsoft Purview Data Loss Prevention and information protection capabilities to protect sensitive information while balancing security requirements with legitimate business processes.

• Engineer and optimize Mimecast or comparable Secure Email Gateway capabilities to protect against phishing, malware, business email compromise, impersonation, and other email-borne threats.
• Maintain layered email security controls and secure mail‑flow architecture across Microsoft 365 and third‑party security platforms, including SPF, DKIM, and DMARC.
• Continuously improve email security controls based on emerging threats, security events, and observed control effectiveness.

• Support the continued development of Zero Trust capabilities using Zscaler and related technologies.
• Partner with Network Engineering to strengthen secure…