Senior Penetration Testing & Offensive Security Engineer

Quantix, Inc.; United States; On-site; USD 131,000 - 145,000; Full time

Job summary

Quantix, Inc. is seeking a Senior Offensive Security Engineer to lead offensive security testing across enterprise apps, infrastructure, cloud environments, and networks.

This role will execute advanced penetration tests and help mature offensive security capabilities. The ideal candidate has 5–7+ years of hands-on experience, proficiency with Burp Suite and Kali Linux, and strong Active Directory exploitation skills.

Qualifications

• 5–7+ years hands-on offensive security or penetration testing across web apps, APIs, enterprise networks, cloud, and infra.
• Proven experience designing, leading, or maturing an enterprise offensive security or penetration testing program.
• Experience with internal and third-party pentesting engagements: scoping, authorization, rules of engagement, and reporting.
• Advanced proficiency with offensive security tools including Burp Suite, Kali Linux, and manual exploitation techniques.
• Strong AD exploitation experience including Kerberoasting, delegation abuse, privilege escalation, and lateral movement.
• Experience securing and assessing cloud environments (IAM security, container security, CI/CD risks).
• Experience leveraging AI tools to improve offensive security testing workflows.

Responsibilities

• Lead offensive security testing across enterprise apps, infrastructure, cloud environments, and networks.
• Execute advanced penetration testing engagements and mature offensive security capabilities.
• Mentor and collaborate with engineering and security teams to remediate security risks.
• Communicate risks clearly to technical and executive audiences.

Skills

Offensive security testing

Penetration testing

Burp Suite

Kali Linux

Active Directory exploitation

Cloud security

AI tools in security

Python / Bash / PowerShell

STRIDE / PASTA

Executive communication

Education

Bachelor's degree in CS or related

Tools

Burp Suite

Kali Linux

PowerShell

Job description

Quantix, Inc. is seeking a Senior Offensive Security Engineer to lead offensive security testing across enterprise apps, infrastructure, cloud environments, and networks.

This role will execute advanced penetration tests and help mature offensive security capabilities. The ideal candidate has 5–7+ years of hands-on experience, proficiency with Burp Suite and Kali Linux, and strong Active Directory exploitation skills.