Brisbane or Sydney Based role
12-month Contract
WFH – 3days in office and 2 days WFH

As an Offensive Security Engineer, you will Validates whether client controls, detection and logging actually catch real attacks and identifies and supports closing the gaps.The role scopes, plans, manages and undertakes cyber hunt, penetration testing, red team, threat emulation and other technical security assurance activities across networks, applications, cloud services, end-user settings and enterprise platforms.

Responsibilities
Runs red and purple team engagements against critical apps, infrastructure and controls
Builds and maintains fit-for-purpose red team infrastructure
Validates controls, detection and logging; finds gaps and proves they are closed
Owns and matures Breach & Attack Simulation
Demonstrated experience planning, scoping and conducting penetration testing, cyber hunt, red team, threat emulation or similar technical security assurance activities across enterprise technology environments;
Solid technical knowledge of common vulnerability classes, exploitation methods, operating systems, networks, web applications, cloud services,



security controls and the tools and methodologies used to assess them
Closes the loop: proposes remediation, recent detections, log sources and controls; drives findings into the engineering backlog
Acts as the validation arm of threat-informed defence (ATT&CK-mapped;)

Must-have
Hands-on offence: adversary emulation, C2, exploitation, attack-path analysis across cloud / infra / endpoint
Detection and logging fluency (the purple half)
BAS and ATT&CK;
Python and automation; tight rules-of-engagement discipline

Bonus
AI coding / agentic tools (GPT-5.5 Trusted Access for Cyber, Codex, Claude Code, Copilot or similar) to find and prove exploitable vulns at repo scale
GitLab Ultimate; standing up AI-assisted code-analysis infrastructure
Detection engineering
Application / code security experience (SAST, DAST, SCA)

How to apply Applications are treated with absolute confidentiality. Click APPLY or contact Gary at @bluefinresources.com.au or an informal conversation about your next career move

Reference number: BH-62726

Company: Bluefin Resources

Date posted: 24th Aug, 2026

📌 Offensive Security Engineer Red / Purple Teamjust Posted! Brisbane
🏢 Bluefin Resources
📍 Brisbane