Senior Security Engineer – Email & Endpoint Protection

Equinix • Dallas, TX

3d

About The Position

Organizations today demand Email Security experts who can protect enterprise email systems against phishing, malware, and data breaches. Equinix is looking for senior-level email security engineer in that area. At Equinix, a “Senior Information Security Engineer” role encompasses email security as part of a broader InfoSec remit. Equinix, a global digital infrastructure company, expects this senior engineer to design, implement, and maintain security solutions across endpoints, web, and email.

Requirements

• 5+ years in InfoSec, with 2+ years specifically in email security engineering/operations.
• Senior specialist in messaging security
• Preferably bachelor's in computer science/engineering or related field (or equivalent experience)
• Requires proficiency in enterprise email security platforms (could be Microsoft 365, Proofpoint, or others) to detect and block threats
• Email Auth: Strong knowledge of DMARC, SPF, DKIM and their role in preventing spoofing.
• Endpoint Security: Deep experience with Endpoint Detection & Response tools, agent deployment, etc.
• Strong grasp of email routing and SMTP protocols, TLS encryption for email, etc. as part of troubleshooting mail flow.
• General network security understanding (firewalls, etc.) to see email in context
• Ability to apply security principles, communicate clearly, and exercise good judgment regarding confidentiality and integrity of data

Nice To Haves

• Scripting and automation skills (Python, PowerShell, Bash) to build or improve services considered as advantage

Responsibilities

• Email Security Tool Ownership – Implement and manage enterprise email security platform configurations. Align settings with best practices and current threat landscape; adjust filtering rules to block phishing and malware
• Email Authentication & Trust (SPF, DKIM, DMARC enforcement; sender trust) serve as a primary owner for InfoSec technologies and ensures they are operating effectively
• Threat Detection & Response Integration – Continuously monitor email traffic for suspicious patterns. Investigate alerts in real time and respond to email-borne threats immediately to minimize impact. Perform regular audits of email security settings to find and fix vulnerabilities before incidents occur
• Lifecycle Management & Best Practices – Follow a structured approach to security tech: Plan, Design, Deploy, Operate, Optimize email security solutions in line with the Information Security Systems Development Lifecycle. This ensures continuous improvement and up-to-date defenses for email and other systems
• Collaboration and Guidance – Work closely with IT, network, and application teams to provide guidance and best-practice solutions for security issues. The role involves mentoring others and coordinating efforts to implement security controls effectively
• Automation and Innovation – Develop scripts and Security Orchestration, Automation, and Response (SOAR) solutions to automate repetitive security tasks. Equinix specifically notes coding for automation (in Python, PowerShell, etc.) as part of the duties, highlighting innovation in improving security operations

Benefits

• Employee Assistance Program: An Employee Assistance program is available to all employees.
• US Benefits: - Insurance: You may enroll in health, life, disability and voluntary plans that are designed for you and your eligible family members. - Retirement: You and Equinix may contribute to a retirement plan to help you plan for your financial future. - Paid Time Off (PTO) and Paid Holidays: You will receive an accrued amount of PTO each pay period along with various paid holidays for you to rest and recharge.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level