Information Security – M&A Lead (Proofpoint Email Security)
Location is Downers Grove, IL (Hybrid role) but open to remote for strong candidates.
Role Overview
The Manager, Information Security – M&A Lead is a senior security leader within the Information Security & Risk Management function, responsible for owning and executing cybersecurity strategy across mergers and acquisitions, with a primary focus on enterprise email security and Proofpoint platform integration.
Operating within the CISO organization, this role leads the secure onboarding, transformation, and standardization of email security capabilities across acquired entities, ensuring rapid risk reduction, threat protection continuity, and alignment to enterprise security architecture.
This position requires deep expertise in Proofpoint configuration, migration, and optimization, combined with strong M&A execution discipline, risk-based decision-making, and the ability to operate at speed in complex, multi-entity environments.
The Ideal Candidate
The successful candidate:
- Leads end-to-end M&A security execution, from diligence through post-close integration
- Brings deep hands-on expertise in Proofpoint email security, including deployment, policy design, and advanced threat protection capabilities
- Applies risk-based decision-making to balance integration speed with security and business priorities
- Operates effectively in high-speed M&A environments, managing parallel integrations and competing timelines
- Communicates with impact across technical teams and executive stakeholders
- Drives standardization and scalability, building repeatable M&A security playbooks
- Takes a configuration-first, engineering-minded approach to security control implementation
Key Responsibilities
M&A Security Leadership
- Serve as the Information Security M&A lead across acquisitions and integrations
- Lead security due diligence and Day 0 / Day 1 / Day 100 planning, with a strong focus on email security risks and dependencies
- Define and execute secure integration strategies to rapidly onboard acquired entities into enterprise security controls
- Establish repeatable M&A security playbooks, particularly for email security integration
Proofpoint Email Security Integration
- Own end-to-end deployment, migration, and integration of Proofpoint across acquired organizations
- Lead Proofpoint tenant consolidation, domain onboarding, and mail flow reconfiguration into the enterprise Proofpoint architecture
- Design and implement Proofpoint policies, including:
- Email authentication (SPF, DKIM, DMARC)
- Anti-phishing, anti-malware, and impersonation protection
- URL Defense, Attachment Defense, and TAP configurations
- Data Loss Prevention (DLP) and encryption policies
- Assess legacy email security solutions and drive migration or decommissioning strategies
- Ensure continuity of threat detection, quarantine management, and incident response workflows during transitions
- Optimize policy tuning, false positive reduction, and detection efficacy post-integration
Experience
- Proven experience leading cybersecurity activities across M&A transactions, including due diligence and post-close integration
- Deep, hands-on expertise in Proofpoint Email Security platform configuration and operations
- Experience with email migrations, tenant consolidations, and secure mail flow architecture
- Demonstrated ability to manage complex, cross-functional integration programs
Qualifications
- Bachelor’s degree in Information Security, Computer Science, Engineering, or equivalent experience
- 7+ years of experience in cybersecurity, with significant exposure to M&A or large-scale integrations
- Certifications such as CISSP preferred
- Strong executive communication and stakeholder management skills
- Highly organized, self-driven, and able to operate with high autonomy in fast-paced environments
Never miss an opportunity! Create an alert based on the job you applied for.
