Senior Cybersecurity Engineer

Senior Cybersecurity Engineer – Job Ad - CDOC

At Datacom we connect people and technology to solve challenges, create opportunities and discover new possibilities for our customers and the communities we live in. Our Cyber Security Platforms & Solutions Team help our clients to navigate and take control of digital disruption for their businesses across New Zealand and Australia, by building, maintaining and enhancing the platforms and solutions our Security Operations Centre use to keep them protected.

We are looking for people with a passion for Cyber Security to join us, offering you the chance to boost your career with excellent development opportunities.

About the Role:

The role will focus on optimisation with a view to generate revenue performing this function as part of a schedule. You will play a pivotal role in strengthening and optimising CDOC's managed security service.

This role focuses on improving structure, correlation quality, and automation maturity across our security platforms, enhancing detection accuracy, operational consistency, and customer value. You will help shape best practices for rule tuning, use case development, and log coverage, while contributing to the standardisation of onboarding processes, documentation, and cost models.

Working closely with our SOC, Platform, and Automation specialists, you will drive continuous improvement across CDOC's operations, helping strengthen CDOC's position as a proactive, intelligence-led cybersecurity partner.

What You'll Do:

In this role, you will apply both hands-on technical expertise and a continuous improvement mindset to strengthen CDOC's operations. You will work across SIEM, XDR, and automation platforms to refine detections, streamline onboarding, and enhance service quality through structured optimisation activities including:

·       Review and tune use cases across Microsoft Sentinel, Defender, Splunk, and CrowdStrike to improve accuracy and reduce false positives.

·       Enhance correlation between SIEM, EDR, identity, and network telemetry to strengthen detection depth and visibility.

·       Develop and maintain structured detection use cases and documentation to support consistent delivery and continual improvement.

·       Contribute to the design and documentation of standardised onboarding processes to improve service transition and delivery efficiency.

·       Conduct log coverage and data connector reviews to identify optimisation opportunities and improve ingestion efficiency.

·       Design and enhance automation workflows and playbooks to streamline enrichment, triage, and reporting.

·       Participate in proactive improvement review cycles, presenting findings and recommendations for service uplift.

·       Collaborate with SOC, Platform, and Service Delivery teams to align technical improvements with customer reporting and managed service outcomes.

·       Support ongoing process standardisation and service maturity initiatives across our cybersecurity operations.

The Person

You are a hands-on engineer with an architect's mindset, someone who not only fixes problems but builds the systems that prevent them. You have a passion for optimising how security operations work, from rule design and correlation logic to automation and service integration.

You will bring:

·       At least 5–7 years' experience in cybersecurity engineering or security operations.

·       Strong knowledge of Microsoft Sentinel, Defender for Endpoint, Splunk, or equivalent SIEM/XDR technologies.

·       Understanding of Security Orchestration and Automation and its role in streamlining response.

·       Good understanding of ITIL processes and experience contributing to structured onboarding or service transition activities.

·       A collaborative, can-do attitude and a desire to mentor others.

·       Experience in security solution design, use case development, or improving managed security service delivery is highly desirable.

You will thrive in a fast-moving environment where structure, process improvement, and innovation go hand in hand. If you're looking to make a real impact in how Datacom delivers managed security, this is where you can shape that change. You will be part of a collaborative team that values initiative, knowledge-sharing, and practical innovation, with the opportunity to help shape the continual evolution of CDOC's managed security services and the value we deliver to our customers.