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Cybersecurity Pentester - Red Team OperatorACI Worldwide • United States
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Cybersecurity Pentester - Red Team Operator

ACI Worldwide
  • US
    United States
  • US
    United States
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About

Job Description
Powering the world's payments ecosystem
ACI powers the payments ecosystem - globally, and you power ACI. You'll innovate, collaborate, and grow - in an energetic technology culture with decades of proven success. ACIers - in all roles and levels - are truly your colleagues and many are your friends. Our size and reach allow you to see the global impact of your work. You are visible, your talents are valued, and you are empowered to shape the future of payments.
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. The position offers hands-on involvement in cutting-edge Red Team operations, custom tool development, and emerging areas such as AI-driven offensive security.
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 ACIs 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. The ideal candidate is a strategic thinker who thrives in autonomous environments, maintains an adversarial mindset, and is passionate about continuous learning in the evolving cybersecurity landscape. 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
Applicants
must be currently authorized to work in the United States
on a full-time basis. This position
does not offer sponsorship
for employment visa status or work permit now or in the future.
In return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package-all within an innovative and collaborative work environment.
Are you ready to help us transform the payments ecosystem? To learn more about ACI Worldwide, visit our web site at
www.aciworldwide.com Job ID
(Requisition #19001)
ACI Worldwide is an AA/EEO employer in the United States, which includes providing equal opportunity for protected veterans and individuals with disabilities, and an EEO employer globally.
Important Notice About Recruitment Scams Job seekers should be aware of ongoing recruitment scams where individuals or organizations impersonate legitimate companies to offer fake job opportunities. These scams often involve requests for personal information, payments, or interviews through unofficial channels. Please be cautious and verify any communications claiming to be from our company (www.aciworldwide.com / @aciworldwide.com). The ACI Worldwide recruitment team will always follow official channels and will never request payment.
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  • United States

Languages

  • English
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