Senior Email Security Engineer - Exchange Online & Hybrid

Corteva Agriscience; United States; Remote; USD 110,000 - 160,000; Full time

Benefits offered by this job

Health benefits

Paid time off

Parental leave

Retirement plan

Tuition reimbursement

Job summary

Corteva Agriscience is seeking a senior Messaging/Exchange Engineer to lead the design, administration and support of the enterprise Exchange environment across Exchange Online, hybrid and on‑premises deployments.

You will drive incident response, change and release management, mail flow topology, security controls, and large‑scale migrations while coordinating with MSS, vendors and security operations to protect, audit, and improve messaging services.

Qualifications

• Senior-level experience architecting, engineering, administering, and supporting enterprise Exchange environments (Online, hybrid, on-premises).
• Hands-on Exchange security tooling and mail gateway experience (Proofpoint, EOP, DMARC, SPF, DKIM).
• Experience with Exchange Server 2019/SE and Office 365.
• Strong understanding of mail flow, TLS, connectors, and hybrid deployment models.

Responsibilities

• Manage and coordinate changes affecting messaging and related applications.
• Lead incident response for mail and related applications.
• Provide senior-level engineering support for Exchange Online, hybrid, on‑premises, and SMTP.
• Support mail flow architecture, hybrid connectivity, identity integration, and security controls.
• Oversee change, release management and testing for non‑impactful operational readiness and transitions.
• Deliver on Exchange user migrations and AD data integration involving messaging platforms.
• Interface with internal and external stakeholders during service disruptions or changes.
• Ensure information security and compliance for the messaging environment.
• Administer and improve Exchange security tooling (Proofpoint, DMARC, SPF, DKIM, EOP).
• Collaborate with MSS resources to investigate email security events and tune detections.
• Lead complex troubleshooting and root-cause analyses for messaging incidents.
• Maintain KB articles and documentation.

Skills

Exchange architecture

Messaging security

PowerShell scripting

RBAC

AD/Azure AD

O365 licensing

MSS collaboration

Incident response

Education

ITIL certifications

Microsoft certifications

Tools

Proofpoint

DMARC

SPF

DKIM

EOP

Mail gateways

Job description

Corteva Agriscience is seeking a senior Messaging/Exchange Engineer to lead the design, administration and support of the enterprise Exchange environment across Exchange Online, hybrid and on‑premises deployments.

You will drive incident response, change and release management, mail flow topology, security controls, and large‑scale migrations while coordinating with MSS, vendors and security operations to protect, audit, and improve messaging services.