Senior Communications Security Engineer

Shamrock•Overland Park, KS

About The Position

We are seeking a Senior Communications Security Engineer/Analyst to lead the design, implementation, and continuous improvement of security controls across enterprise communication platforms. This role will focus primarily on email security, while also supporting modern collaboration technologies such as Microsoft Teams, Zoom, and Slack. The ideal candidate is a hands-on security professional with deep expertise in secure messaging ecosystems, threat detection, data protection, and user behavior risk mitigation within communication channels.

Requirements

5–8+ years in cybersecurity, with a strong focus on email or messaging security.
Deep expertise in Microsoft 365 security stack (Defender for Office 365, Purview, Exchange Online Protection).
Experience with collaboration platforms security (Teams, Slack, Zoom).
Strong understanding of: Email protocols and authentication (SMTP, SPF, DKIM, DMARC), Phishing/BEC attack techniques, DLP and information protection.
Experience with SIEM tools (e.g., Sentinel, Splunk) and alert tuning.
Ability to analyze and respond to real-world attacks with minimal supervision.

Nice To Haves

Experience with email filtering products.
Experience with cloud security platforms (Azure, AWS, and GCP).
Experience building automation or response workflows.
Strong analytical and threat detection mindset.
Deep understanding of social engineering attack vectors.
Ability to translate risk into actionable controls.
Cross-team collaboration and communication skills.

Responsibilities

Design, implement, and maintain enterprise email security.
Manage and tune: Phishing and malware detection, Email authentication (SPF, DKIM, DMARC), Safe Links / Safe Attachments or equivalent controls.
Lead incident response for phishing, BEC (Business Email Compromise), and email-based threats.
Develop and enforce policies for data loss prevention (DLP) within email systems.
Partner with SOC teams to improve email threat detection and response playbooks.
Assess and secure communication tools including collaboration applications.
Define and implement security baselines, including: External sharing controls, Guest access governance, Message retention and compliance policies.
Monitor and mitigate risks related to: Data leakage, Unauthorized file sharing, Shadow IT usage of communication tools.
Develop detection use cases for communication-based threats across SIEM/SOAR platforms.
Analyze logs and telemetry from messaging platforms for suspicious activity.
Conduct threat hunting focused on social engineering and communication channel abuse.
Align communication security controls with frameworks and policies.
Support audits and compliance requirements related to secure communications and data protection.
Perform risk assessments on new messaging/collaboration tools before adoption.
Collaborate with security awareness teams to reduce phishing susceptibility.
Provide guidance on secure usage of collaboration tools.
Help design simulations and metrics-driven improvement programs.