Senior Attack & Penetration Tester - Consulting

EY; Milwaukee (WI); On-site; USD 120,000 - 180,000; Full time

Job summary

EY is seeking a Senior Attack & Penetration Tester to join our security team. You will plan, lead, and execute sophisticated offensive security operations across client environments, including networks, AD, cloud, APIs, and applications.

Expect an intelligence-led approach, collaboration with cross-functional teams, and opportunities to mentor junior testers while delivering executive-ready insights. You will apply threat-informed testing techniques and translate results into practical

Qualifications

• Deep hands-on penetration testing expertise across networks, applications, and cloud
• Ability to plan, lead, and execute complex engagements within defined scope
• Experience applying MITRE ATT&CK techniques in assessments
• Strong communication of risk to technical and executive audiences

Responsibilities

• Plan, lead, and execute advanced penetration tests and red team engagements across diverse client environments.
• Translate testing results into actionable remediation steps and strategic security improvements.
• Coordinate testing activities, mentor junior team members, and contribute to methodology development.
• Maintain current knowledge of vulnerabilities and offensive security tooling.

Skills

Penetration testing

Red team operations

Threat-informed testing

Active Directory security

Cloud security testing

Lead & mentor teammates

Job description

EY is seeking a Senior Attack & Penetration Tester to join our security team. You will plan, lead, and execute sophisticated offensive security operations across client environments, including networks, AD, cloud, APIs, and applications.

Expect an intelligence-led approach, collaboration with cross-functional teams, and opportunities to mentor junior testers while delivering executive-ready insights. You will apply threat-informed testing techniques and translate results into practical