Security Analyst - Contract
ncsaustralia · Sydney, NSW, au ·
- Work mode
- Hybrid
- Employment
- Contract
- Category
- Security
- Visa sponsorship
- No
ncsaustralia · Sydney, NSW, au ·
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CNS Australia Pty Ltd · North Sydney, Sydney NSW
NCS Australia is hiring a contract Security Analyst in Sydney (Oct-Dec 2026, extendable) to build an External Exposure Baseline: analyzing internet-facing attack surface data, consolidating and reconciling asset discovery datasets, mapping ownership, prioritizing vulnerabilities, and reporting exposure risks to security leadership. Core tech: EASM tooling, network fundamentals (DNS, TLS, VPN), and
We are seeking a Security Analyst for an initial short-term contract engagement running from October through December 2026 with possible extensions in Sydney.
In this specialist technical role, you will be responsible for analyzing raw discovery data across our internet-facing infrastructure to build a validated, risk-actionable External Exposure Baseline. You will bridge technical discovery with risk governance—consolidating complex datasets, establishing asset ownership, prioritizing vulnerabilities, and embedding findings into our ongoing Exposure Management function.
Key Responsibilities
Attack Surface Data Analysis: Analyze large-scale external exposure datasets (IP addresses, domains, subdomains, VPN assets, cloud services, and edge infrastructure) to establish an authoritative external attack surface baseline.
Asset Discovery & Normalization: Consolidate, normalize, and de-duplicate asset discovery data from multiple internal and external discovery engines into a single source of truth.
Inventory Reconciliation & Ownership Mapping: Reconcile discovered external assets against internal registers to identify ownership gaps, rogue non-production environments, and unmanaged services.
Stakeholder Engagement: Collaborate across application, infrastructure, and business teams to validate technical relationships, business criticality, and operational status.
Risk Assessment & Prioritization: Evaluate findings to identify systemic control gaps, orphaned assets, and security risks—prioritizing remediation based on threat posture, business impact, and effort.
Treatment & Remediation Planning: Define clear treatment recommendations, including remediation actions, ownership assignment, risk acceptance, or asset decommissioning.
Documentation & Governance: Maintain audit-ready records of findings, decision rationale, ownership records, and evidence to support handover to ongoing operational teams.
Executive Reporting: Deliver clear reporting and insights on exposure trends, remediation progress, and systemic control issues for senior cybersecurity leadership.
Cyber Security & Exposure Analysis: Proven track record as a Security Analyst focusing on External Attack Surface Management (EASM), threat exposure, or vulnerability risk analysis.
Data Manipulation & Reconciliation: Strong capability to consolidate, query, and de-duplicate large, complex technical datasets from multiple security scanning platforms.
Asset & Risk Governance: Deep understanding of enterprise inventory management, asset discovery lifecycle, and threat modeling frameworks.
Network & Infrastructure Security: Technical knowledge of IP routing, DNS, domain management, SSL/TLS, VPN architectures, and public cloud infrastructure (GCP/AWS/Azure).
Stakeholder Influence: Excellent communication skills to coordinate with technical owners, drive asset attribution, and negotiate remediation actions.
Availability & Location: Sydney-based and available to commence the engagement in October 2026.
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 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.
Australian Secret Intelligence Service · Canberra ACT