Email Security Engineer

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Job Description

DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability across public, private and hybrid clouds. The world's largest companies and public sector organizations trust DXC to deploy services to drive new levels of performance, competitiveness, and customer experience across their IT estates.

Job Description

DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability across public, private and hybrid clouds. The world's largest companies and public sector organizations trust DXC to deploy services to drive new levels of performance, competitiveness, and customer experience across their IT estates.

Job Summary

We are seeking a highly skilled Email Security Engineer with hands-on experience in managing and optimizing enterprise-grade email security platforms. This role is instrumental in safeguarding users against email-based threats, enforcing domain authentication standards, and maintaining the integrity of cloud and on-premises messaging systems.

The engineer will work closely with vendors such as Valimail, Proofpoint, and Trend Micro, and will be actively involved in policy enforcement, incident response, system governance, and compliance readiness.

Key Responsibilities

• Investigate and respond to malicious email threats, phishing campaigns, spoofing incidents, and business email compromise (BEC)
• Administer and enhance configurations on email security platforms including Valimail, Proofpoint, and Trend Micro
• Manage and enforce DMARC, SPF, and DKIM protocols using Valimail to ensure domain protection and message authenticity
• Perform daily and monthly system health checks, reviewing traffic patterns, threat categorizations, and delivery performance
• Coordinate with vendors and Technical Account Managers (TAMs) for feature rollouts, issue resolution, and governance activities
• Implement and monitor email routing rules, spam filtering, policy enforcement, and reputation-based controls
• Troubleshoot delivery failures, analyze Non-Delivery Reports (NDRs), and liaise with internal teams for root cause resolution
• Maintain integration between Microsoft Exchange (on-prem / hybrid) and Office 365 environments
• Provide support for internal and external audits, including data collection, compliance reporting, and evidence submission
• Manage blocklists, allowlists, quarantine settings, and warning banners in user-facing messages
• Conduct quarterly access reviews and ensure governance policies are consistently applied across platforms

Role Expectations

Essential

Technical Skills and Experience Required :

Experience In At Least 2 Of The Following Technologies

Advantageous Certifications

Learn more about DXC's Security team - Security

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Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here .

Seniority level

Seniority level

Mid-Senior level

Employment type

Employment type

Full-time

Job function

Job function

Information Technology

Industries

IT Services and IT Consulting

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