Cybertify is Hiring: Defensive Cybersecurity – L3 Senior Engineer (Sydney, Full-Time)

Are you an experienced L3 Defensive Cyber Engineer ready to build, implement, and optimise robust security solutions for Australia's most critical organisations, working with an elite team and zero bureaucracy?

Cybertify, a trailblazing force in Australian cybersecurity, is seeking a talented and highly experienced Defensive Cybersecurity – L3 Senior Engineer to join our "Elite Cyber Squad" in Sydney. We're disrupting the traditional cybersecurity model by offering enterprise-grade cybersecurity solutions, built for governance and engineered for speed, with a "compliance-first" DNA.

Forget the red tape and fragmented projects of the large, bureaucratic firms. At Cybertify, you'll gain direct access to the best of the best seasoned cybersecurity experts, working with agile methodologies to deliver immediate and impactful defensive solutions for Australia's most regulated sectors.

The Opportunity:

As an L3 Senior Engineer in Defensive Cybersecurity, you will be a hands-on technical expert within our team, responsible for designing, implementing, configuring, and optimising a wide range of defensive security controls and architectures. You will work directly with clients to enhance their security posture, detect advanced threats, and ensure their systems are resilient and compliant.

What You'll Do:

Design & Implementation: Lead the technical design, implementation, and configuration of various defensive security solutions, including:

Cloud Security Posture Management (CSPM), Cloud Workload Protection Platforms (CWPP), and cloud infrastructure hardening (AWS, Azure, GCP).

Zero Trust Architecture components (e.g., micro-segmentation, identity-based access control).

Identity Security & Privileged Access Management (PAM) solutions.

Data Loss Prevention (DLP) across endpoints, networks, and cloud.

SIEM, EDR, MDR, and XDR platforms (e.g., Microsoft Defender XDR suite, CrowdStrike, SentinelOne).

Email Security & Phishing Defence technologies.

Application & API Security controls (e.g., RASP, API gateways).

Optimisation & Management: Fine-tune existing security tools, develop custom rules, alerts, and playbooks to enhance threat detection and response capabilities.

Troubleshooting & Support: Act as an escalation point for complex technical issues related to defensive security controls, providing expert troubleshooting and resolution.

Threat Detection & Analysis: Participate in threat hunting activities, analyse security events, and contribute to incident response efforts by providing deep technical insights into defensive tool outputs.

Security Architecture Review: Contribute to security architecture reviews, identifying gaps and recommending robust defensive strategies.

Documentation & Knowledge Transfer: Create detailed technical documentation, standard operating procedures, and provide knowledge transfer to client teams.

Compliance Alignment: Ensure implemented solutions align with relevant regulatory frameworks (e.g., Essential Eight, ISO 27001, APRA CPS 234, NIST, CIS Controls).

Client Collaboration: Work directly with client technical teams to understand their environments, challenges, and integrate security solutions seamlessly.

What You'll Bring (Your Elite Cyber Squad Credentials):

5+ years of hands-on, dedicated experience as a Security Engineer, focusing on the implementation and operationalisation of defensive cybersecurity technologies.

Proven expertise in at least 3-4 of the following areas:

Cloud Security (AWS, Azure, GCP security services & best practices)

SIEM/SOAR platforms (e.g., Splunk, Microsoft Sentinel, Elastic, IBM QRadar)

Endpoint Detection and Response (EDR) & Extended Detection and Response (XDR) (e.g., CrowdStrike, Microsoft Defender, SentinelOne, Sophos)

Identity & Access Management (IAM) / Privileged Access Management (PAM) solutions (e.g., CyberArk, Okta, Azure AD (Entra) Identity Protection)

Data Loss Prevention (DLP)

Network security (firewalls, IDS/IPS, WAFs)

Email security (e.g., Microsoft Exchange Online Protection, Proofpoint, Mimecast, Sophos)

Strong understanding of modern attack techniques and defensive counter-measures.

Experience with scripting/automation (e.g., Python, PowerShell) for security tool integration and process automation.

Familiarity with security frameworks (Essential Eight, ISO 27001, NIST, CIS Controls).

Excellent problem-solving skills and the ability to troubleshoot complex technical issues.

Strong communication skills, capable of explaining technical concepts to both technical and non-technical audiences.

Relevant industry certifications (e.g., AZ-500, SC-200, CCSP, CCSK, CISSP, GSEC, GCIA) are highly regarded.

A proactive, results-oriented mindset with a commitment to delivering high-quality, practical solutions.

Australian Citizenship or Permanent Residency is a mandatory requirement.

Why Cybertify?

Elite Cyber Squad Advantage: Work directly with the industry's most experienced and highly skilled cyber professionals. No junior staff; every project is led and delivered by proven experts.

Agile Disruption: Be part of a lean, agile firm that delivers rapid, impactful results without the bureaucracy of traditional cybersecurity companies.

Impactful Work: Tackle complex and critical incident response challenges for Australia's most regulated sectors.

Market-Leading GRC Integration: Benefit from our unique "compliance-first" DNA, where security and GRC are seamlessly intertwined.

Continuous Growth: Opportunities for professional development, cutting-edge tool exposure, and expanding your expertise.

Boutique Personality, Big 4 Capability: Enjoy a collaborative, supportive culture combined with challenging, high-level engagements.

Independent & Trusted: Provide objective, unbiased guidance to clients, solely focused on their best interests.

If you are a driven cybersecurity expert ready to make a significant impact and thrive in an environment where your expertise is truly valued, we want to hear from you!

How To Apply:

Please send your resume and a cover letter via Seek detailing your relevant experience and why you are the ideal fit for Cybertify's Elite Cyber Squad.

Other Open Roles at Cybertify

To view other open roles at Cybertify, click "View all jobs" at the top of this ad. Invite your cyber friends and colleagues to join Cybertify — the future of cybersecurity:

Director of Offensive Cybersecurity

Director of DFIR – Cybersecurity

Director of Defensive Cybersecurity

Senior Penetration Tester

Senior DFIR Engineer – Cybersecurity

Defensive Cyber Security – L3 Senior Engineer

Cybertify is powered by the Elite Cyber Squad.