Senior Security Incident Response Engineer

Acrisure•Atlanta, GA

12d•Onsite

About The Position

A global fintech leader, Acrisure empowers millions of ambitious businesses and individuals with the right solutions to grow boldly forward. Bringing cutting-edge technology and top-tier human support together, we connect clients with customized solutions across a range of insurance, reinsurance, payroll, benefits, cybersecurity, mortgage services – and more. In the last eleven years, Acrisure has grown in revenue from $38 million to almost $5 billion and employs over 19,000 colleagues in more than 20 countries. Our culture is defined by our entrepreneurial spirit and all that comes with it: innovation, client centricity and an indomitable will to win. Job Summary: The Senior Incident Response Engineer will lead advanced security incident response efforts, focusing on Microsoft E5 security capabilities and Data Loss Prevention (DLP). This role combines technical expertise with leadership responsibilities, ensuring robust detection, containment, and remediation of threats while driving proactive security measures across the enterprise.

Requirements

Proficiency with Microsoft 365 Security Suite as well as other security tooling such as SentinelOne, Google SecOps, Abnormal Security, and others.
Strong experience with incident response, digital forensics, and threat hunting across a hybrid environment.
Knowledge of endpoint operating systems (Windows, macOS, and Linux).
Experience with cloud environments such as Azure, AWS, and GCP.
Experience with scripting (PowerShell, Python, or Bash) for automation and log parsing desired.
Embrace a metric-driven approach to continuous improvement.
Excellent analytical and critical thinking skills; ability to work in high-pressure situations.
Effective verbal and written communication abilities.
Meticulous with strong organizational skills and the ability to handle multiple priorities.
Ability to work independently and within a collaborative, team-oriented environment.
Minimum 5 years of progressive information security experience.
At least 4 years focused on incident response, including investigations across different security domains (endpoint, application, DLP, and more).
Expertise in Infrastructure Security: In-depth understanding of infrastructure security, including Windows, Active Directory, Unix/Linux, Mobile Security, and Privileged Access Management.
Relevant certifications (one or more preferred): GCFA, GCIH, CHFI, CySA+, MS SC-200, MS SC-400 or similar.
Candidates should be comfortable with an on-site presence to support collaboration, team leadership, and cross-functional partnership.

Responsibilities

Detect, analyze, and respond to security incidents detected by EDR, SIEM, and Cloud Security tooling as well as MDR service providers.
Lead post-incident reviews and drive process improvements.
Perform advanced threat hunting using Microsoft Defender and related tools.
Integrate threat intelligence and adapt detection strategies based on real world threats observed by the organization.
Conduct forensic data acquisition, log analysis, and root cause determination for endpoint incidents.
Develop and maintain incident response playbooks and runbooks across the security operations toolset.
Collaborate with analysts and other IR engineers to identify opportunities for improvement and tuning of detection rules.
Collaborate with IT, legal, HR, communications, and other business units
Collaborate on the design, implementation, and maintenance of security policies for Microsoft security components, including:
Defender for Endpoint
Defender for Cloud Apps
Microsoft Purview DLP
Intune Conditional Access & Information Protection
Regularly review and update policies based on evolving threats and lessons learned.
Collaborate with compliance and IT teams to enforce security standards and regulatory requirements.

Benefits

Physical Wellness: Comprehensive medical insurance, dental insurance, and vision insurance; life and disability insurance; fertility benefits; wellness resources; and paid sick time.
Mental Wellness: Generous paid time off and holidays; Employee Assistance Program (EAP); and a complimentary Calm app subscription.
Financial Wellness: Immediate vesting in a 401(k) plan; Health Savings Account (HSA) and Flexible Spending Account (FSA) options; commuter benefits; and employee discount programs.
Family Care: Paid maternity leave and paid paternity leave (including for adoptive parents); legal plan options; and pet insurance coverage.
… and so much more!
This list is not exhaustive of all available benefits. Eligibility and waiting periods may apply to certain offerings. Benefits may vary based on subsidiary entity and geographic location.

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