Senior Cybersecurity Engineer Jobs in Milwaukee, WI

MARS Solutions Group is looking for a Senior Cyber Security Engineer. Our client is a (Technology/Financial Services) industry leader looking for high-quality talent to make a difference. They are known to respect a traditional work week and often extend contracts for added job security and stability

We’re seeking a senior cybersecurity engineer to design, build, and operationalize enterprise grade‑ data protection capabilities anchored in Microsoft E5. You will lead engineering for Microsoft Purview (Information Protection & DLP, eDiscovery/Audit), Sensitivity Labels, and related guardrails—integrating telemetry and enforcement through Zscaler, CrowdStrike, and Splunk. This role bridges secure-by-default platform engineering with pragmatic automation to protect regulated data (e.g., PHI/PII) at scale. Senior leadership has prioritized accelerating Copilot and E5 controls adoption, creating a high impact‑ opportunity to shape how we protect data across SaaS and AI workloads. 

What You’ll Do

Engineer secure-by-default E5 data protection

• Design and implement Microsoft Purview DLP policies (endpoint, Exchange, SharePoint, OneDrive, Teams) and Sensitivity Label taxonomy with automated enforcement paths. 
   
• Build policy-as-code pipelines (CI/CD) to version, test, and deploy DLP rules, label configs, and governance artifacts in multiple environments.

Integrate Zscaler, CrowdStrike, and Splunk

• Connect Zscaler SSE inspection with Purview controls; route events to Splunk for analytics, dashboards, and detections that close visibility and enforcement loops.
• Leverage CrowdStrike telemetry (e.g., Falcon/Shield) to correlate endpoint behaviors with data movement signals for insider‑risk and exfiltration use cases.

Build automations & guardrails

• Develop services and workflows (e.g., Azure Functions, Logic Apps, Graph API) to auto‑remediate mislabels, revoke risky shares, and notify data owners.
• Implement secure-by-default configuration baselines and drift detection for E5 security controls (MCAS/Defender for Cloud Apps, Conditional Access, etc.).

Operate and continuously improve

• Own reliability for data protection pipelines: SLIs/SLOs, runbooks, and incident playbooks in partnership with Insider Risk team.
• Create Splunk content (data models, dashboards, correlation searches) aligned to exfiltration, anomalous access, and label violations. 
   
• Partner with Privacy and Compliance for audit‑ready controls (eDiscovery/Audit), evidence, and exception processes.

Collaborate across security & platform teams

• Work with PSO, IAM, and Insider Risk to align label taxonomy and enforcement with business workflows and least‑privilege access. 
• Provide technical leadership and mentoring for engineers/analysts rolling out new E5 features and operational support. 

Required Qualifications

• 5+ years engineering experience in enterprise security or platform engineering; hands-on‑ with Microsoft E5 security stack (Purview DLP, Information Protection, eDiscovery).
• Proven expertise building policy‑as‑code for DLP/labels (GitHub/Azure DevOps), and automating Graph/PowerShell administration.
• Demonstrated ability to design secure-by-default guardrails and support rapid SaaS/AI adoption (including Copilot) without compromising compliance.

Nice to Have

• Strong background in data protection for regulated data (PII/PHI), insider‑risk detection, and evidence‑driven investigations.
• Production experience with Zscaler (SSE/ZIA/ZPA), CrowdStrike (Falcon APIs/telemetry), and Splunk (TA configs, CIM, correlation searches). 
• Experience migrating from legacy DLP (e.g., Forcepoint) to Microsoft DLP; building vendor‑neutral dictionaries and detection logic.
• Familiarity with MCAS/Defender for Cloud Apps, conditional access policies, and SSPM evaluations.
• Background in HIPAA/PHI audit support and exception governance workflows.

Success Metrics (first 6–12 months)

• DLP policy efficacy: reduction in unauthorized shares/exports; mean time to remediate violations.
• Label coverage & accuracy: % of sensitive content labeled; false positive/negative rate trends.
• Telemetry integration: end-to-end event flow (Purview → Zscaler/CrowdStrike → Splunk) with actionable detections.
• Secure-by-default adoption: # of guardrails implemented; drift detected/resolved; Copilot controls baselined.
• Audit readiness: evidence completeness for eDiscovery/Audit; exception closure rates.

Tools & Technologies (primary)

• Microsoft E5 / Purview: Information Protection, DLP, eDiscovery/Audit, Insider Risk
• Zscaler (SSE/ZIA/ZPA), CrowdStrike (Falcon/Shield), Splunk (CIM, ES) 
• Automation: GitHub, Graph API, PowerShell, Azure Functions/Logic Apps
• Data flows: Exchange/SharePoint/OneDrive/Slack, endpoints, web proxies, CASB/SSE