Senior Substation Protection & Control Engineer - Hybrid

Ausnet Services Ltd; Melbourne; On-site; AUD 140,000 - 190,000; Full time

Job summary

Ausnet Services Ltd in Melbourne seeks a Security Engineer II to defend our corporate AWS footprint. This role blends hands-on incident response with intelligent automation to detect, investigate, and disrupt threats at scale.

You will independently lead security investigations from detection through containment and remediation, extract IOCs, conduct host forensics, scope impact across data sources, and design guardrails for autonomous tooling.

Qualifications

• Lead security investigations from detection to remediation.
• Extract IOCs and perform host forensics across multiple data sources.
• Design guardrails for autonomous investigation tooling and validate outputs.

Responsibilities

• Investigate active threats such as malware campaigns, phishing attacks, credential compromise.
• Lead end-to-end investigations from detection through containment and remediation, documenting steps.

Job description

Security Engineer II, AWS Security Corporate Response

Description
AWS Corporate Security Response is looking for a Security Engineer who thrives at the intersection of hands-on incident response and intelligent automation. You must think like both an attacker and a defender - understanding adversary tradecraft to detect, investigate, and disrupt threats across Amazon's corporate infrastructure at massive scale.
You'll investigate active threats - malware campaigns, phishing attacks, credential compromise, and novel attack patterns - while simultaneously shaping an agentic investigation platform that scales our response capability beyond what any human team could achieve alone.
You will independently lead security investigations from detection through containment and remediation. You'll extract IOCs, perform host forensics, scope impact across multiple data sources, check for lateral movement, and drive security issues to resolution - documenting every step as the investigation unfolds. You'll also serve as a demanding customer and quality owner of our AI‑powered investigation platform, authoring the investigation user stories that define how autonomous agents analyze threats, designing the guardrails that keep them safe, and validating that automated output meets the same standard a skilled human investigator would produce.
When you identify gaps in our capabilities, you won't wait - you'll quickly design and build tooling that enables programmatic automation at scale, then feed those patterns into the next generation of autonomous investigation.