Senior Offensive Security Tester & Red Team Lead

EY; Chicago (IL); On-site; USD 120,000 - 180,000; Full time

Job summary

EY is seeking a Senior Attack & Penetration Tester to help clients strengthen resilience against cyber threats through offensive security engagements. You will plan, lead, and execute tests across AD, cloud, web/mobile apps, APIs, and networks, translating findings into actionable remediation with executive-level communication.

You will mentor junior team members, coordinate workstreams, and stay current with adversary tactics and tooling.

Qualifications

• Senior tester leading complex penetration tests and red team engagements.

Responsibilities

• Plan, lead and execute complex penetration tests and advanced red team engagements across diverse client environments.

Skills

Penetration testing

Red team engagements

Threat-informed testing

MITRE ATT&CK

Active Directory security

Cloud security

APIs & web apps

Team leadership

Job description

EY is seeking a Senior Attack & Penetration Tester to help clients strengthen resilience against cyber threats through offensive security engagements. You will plan, lead, and execute tests across AD, cloud, web/mobile apps, APIs, and networks, translating findings into actionable remediation with executive-level communication.

You will mentor junior team members, coordinate workstreams, and stay current with adversary tactics and tooling.