Cybersecurity Pentester - Red Team Operator

Job Summary

ACI Worldwide is hiring a Red Team Operator to help simulate advanced cyber adversaries and proactively identify security gaps across the organization. This role plays a critical part in protecting ACI’s systems and data by executing realistic offensive security engagements and partnering with defensive teams to strengthen detection and response capabilities.

Job Responsibilities

• Help plan, develop, and execute Red Team engagements, including adversary emulation, war-gaming, and full-scope assessments (network, application, physical, and social engineering).
• Conduct reconnaissance, weaponization, initial access, lateral movement, privilege escalation, and exfiltration activities while evading detection.
• Collaborate with defensive teams to provide actionable insights, reports, and recommendations for security improvements.
• Develop custom tools, scripts, and techniques to bypass modern defenses
• Stay ahead of emerging threats by researching new TTPs (Tactics, Techniques, and Procedures)
• Participate in Purple Team engagements and help mature ACI’s security posture
• Research, develop, and test AI capabilities in the offensive security space.

Knowledge, Skills and Experience required for the job

• Bachelor's degree in computer science, MIS, or related field or equivalent experience.
• 2+ years of hands-on experience in offensive security, penetration testing, or red team operations.
• Proficiency with offensive security tools such as Cobalt Strike, Empire, Metasploit, Burp, and custom C2 frameworks.
• Experience with AI technologies, ideally local LLMs.
• Experience writing code in Python, PowerShell, C/C++, Go, Rust, etc. for tool development.
• Relevant certifications such as OSCP, OSCE, CRTO, or similar are highly preferred.
• Excellent communication skills with the ability to translate technical findings into business risk language.
• Strong written and verbal communication skills and a solid understanding of IT Security concepts to include security operations.
• Knowledge of network protocols, data flows and vulnerabilities.
• Knowledge of PCI and other industry compliance standards.

Work Environment

This is a high-impact role that directly contributes to protecting critical assets and data. Work Environment: Standard work environment. Travel required, may be domestic or international.

Applicant Requirements

• Currently authorized to work in the United States on a full-time basis.
• The position does not offer sponsorship for employment visa status or work permit now or in the future.

About ACI Worldwide

To learn more about ACI Worldwide, visit our web site at www.aciworldwide.com or follow us on Twitter at @aciworldwide.

Important Notice About Recruitment Scams

Please be cautious and verify any communications claiming to be from our company (www.aciworldwide.com) or our recruiters (@aciworldwide). The ACI Worldwide recruitment team will always follow official channels and will never request payment.