Security Engineer: Data Lake & Cloud Defense Lead

Millennium; Miami (FL); On-site; USD 110,000 - 160,000; Full time

Job summary

Millennium is seeking a Security Engineer to design, implement, and maintain security policies and controls across data lake, email security, and SOAR platforms. You will monitor security logs, manage incidents, and collaborate with Security Operations, IT, and Compliance to strengthen defenses.

The role requires hands-on experience with SIEM/SOAR, firewall and network security, and familiarity with cloud platforms. A CS/Engineering degree and relevant certifications are preferred.

Qualifications

• 3+ years in a technical role with 2+ years in network and information security.
• Hands-on experience with logging pipelines, data lakes or SIEM and SOAR automation.
• Strong understanding of TCP/IP and core networking; familiarity with cloud platforms.

Responsibilities

• Develop, implement, and maintain security policies, procedures, and standards related to Data Lake, Email security, SOAR, Breach Attack Simulation and network security.
• Monitor, manage, and analyze security logs, alerts, and events across multiple systems to identify threats, vulnerabilities, and suspicious activity.
• Provide security engineering and consulting support to the Security Operations and Information Security teams.
• Strengthen perimeter security through automation, improved monitoring, vulnerability identification, and actionable alerting and reporting.
• Partner with stakeholders across Technology, Trading, Legal, Internal Audit, and Compliance to support and enforce security policies and controls.
• Conduct system audits and vulnerability assessments, manage remediation efforts, and help address findings from audits, penetration tests, and process reviews.
• Contribute to incident response activities and use threat intelligence to improve detection, defense, and response capabilities.
• Support the transition of security solutions into production, maintain clear documentation, and provide guidance to junior security professionals.

Skills

Security engineering

Network security

Threat monitoring

Cloud security

Python scripting

Packet capture

TCP/IP knowledge

Proxy technologies

Documentation

Education

Bachelor's degree in CS/Engineering

Tools

Splunk

ELK

Microsoft Sentinel

S3/Athena

SOAR automation

Job description

Millennium is seeking a Security Engineer to design, implement, and maintain security policies and controls across data lake, email security, and SOAR platforms. You will monitor security logs, manage incidents, and collaborate with Security Operations, IT, and Compliance to strengthen defenses.

The role requires hands-on experience with SIEM/SOAR, firewall and network security, and familiarity with cloud platforms. A CS/Engineering degree and relevant certifications are preferred.