At NCS Australia, we believe in doing technology services better. Our commitment to quality, focus on people, and willingness to challenge traditional thinking set us apart. Our team brings this belief to life by partnering with our clients and communities to make tomorrow together.
We are committed to creating an environment that prioritises innovation, collaboration, and purposeful work. Our diverse team is empowered to make a meaningful impact with curiosity, creativity and resilience to shape better outcomes. Join us and accept the challenge of creating a better tomorrow.
Job DescriptionWe are seeking a hands-on Email Security Engineer to support the delivery and operational uplift of Optus email security. The contractor will work closely with Luc and the Director, Data Protection & Email Security, to strengthen outbound controls, complete Mimecast implementation activities and support the controlled decommissioning of Trend Micro email security capabilities.
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.
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.
- 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.
- 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.
- 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 clear technical documentation and operational handover material.
Why NCS?
This is a place for people who like to get stuck in, bring ideas to life and make things happen.
You’ll work alongside experienced people who care about what they do, contribute to meaningful work and have the support to keep learning and grow your career.
Whether you want to deepen your expertise, explore something new or take your career in a different direction, there’s room to make it your own.
We value Adventure, Excellence, Integrity, Ownership and Unity — bringing curiosity, collaboration and accountability to the way we work with our clients and each other.
Ready to make extraordinary happen?
We’d love to hear from you.
We celebrate diversity and inclusion
We value the different perspectives, experiences and strengths our people bring. We’re committed to an inclusive workplace where everyone has the opportunity to contribute, grow and succeed, and to providing equal employment opportunities and reasonable adjustments throughout the recruitment process.
Important information
Applicants will need valid Australian work rights and may be required to undergo relevant background, probity and police checks.
Agencies: NCS accepts candidate submissions only from agencies on our preferred supplier panel through the NCS Agency Portal.
Skills Required
- 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 and 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 clear technical documentation and operational handover material
- Valid Australian work rights
What We Do
NCS in Australia is reinventing technology services from the inside out. We provide advisory, design, build and managed services to our clients, with unrivalled service, attention and understanding every step of the way. We understand day 1001 is just an important as day 1, and we collaborate with clients, striving to provide adaptive approaches, outcomes and thinking by keeping our eye on tomorrow and the days after tomorrow. Our diverse workforce of around 1,300 people has delivered a wealth of large-scale, mission-critical, and multi-platform outcomes for governments and businesses nationally. We are the Australian arm of the pan-APAC technology leader NCS Group, a subsidiary of Singtel Group. Combining the experience and expertise of its 13,000-strong team across 57 specialisations, NCS provides differentiated and end-to-end technology services to clients with its capabilities in digital, data, cloud and platforms, as well as core offerings in application, infrastructure, engineering and cybersecurity. NCS also believes in building a strong partner ecosystem with leading technology players, research institutions and start-ups to support open innovation and co-creation. For more information about NCS Australia, visit ncs.co/en-au or contact our team today. To learn more about NCS Group, visit ncs.co.
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