Role:

Email Security Engineer

Location:

Sydney

Role purpose

- We are seeking a hands-on Email Security Engineer to support the delivery and operational uplift.

- This is a delivery focused role for someone who can operate at both engineering and operational levels, designing changes, implementing them, troubleshooting issues, documenting outcomes and handing over stable services to BAU teams.

Core focus areas

- Outbound email security

- Design, implement and validate the Mimecast outbound mail flow.

- Review outbound routing, controls, policies, authentication and delivery behaviour.

- Identify and close gaps across data protection, malware, impersonation, URL and policy enforcement controls.

- Troubleshoot mail flow issues across Mimecast, Microsoft 365 and downstream or third-party systems.

- Support testing, cutover planning, monitoring and rollback readiness.

- Trend Micro decommissioning

- Map current Trend Micro email security capabilities, integrations, dependencies and traffic flows.

- Define the migration and decommissioning sequence in coordination with the Mimecast target state.

- Remove or retire legacy configurations, rules and integrations safely.

- Validate that required protection and mail flow outcomes remain in place after each change.

- Support defect resolution, rollback planning,



evidence capture and final closure of the decommissioning work.

Key responsibilities

- Execute configuration and engineering changes in a controlled manner.

- Coordinate testing with technical teams and business stakeholders.

- Develop runbooks, technical procedures, support models and knowledge transfer materials.

- Monitor post change outcomes and recommend further tuning.

- Escalate issues early and drive actions through to completion.

Essential experience

- Strong hands-on experience administering and engineering Email Security.

- Demonstrated experience with outbound email security and enterprise mail flow troubleshooting.

- Practical experience implementing email journaling and validating message coverage.

- Experience uplifting email security policies and managing controlled exceptions.

- Experience with Microsoft 365 / Exchange Online mail flow, connectors, transport rules and message tracing.

- Experience retiring or migrating legacy email security platforms, preferably Trend Micro.

- Working knowledge of SPF, DKIM, DMARC, SMTP, DNS and email authentication.

- Ability to produce transparent technical documentation and operational handover material.

Interested Candidates can share their updated resumes to [email protected] or can reach me at

+61 291 575 539

📌 Email Security Engineer (Sydney)
🏢 CareCone Group
📍 Sydney