Sr IT Security Engineer

Role overview

Sr IT Security Engineer at ACI Worldwide India

ACI Worldwide is seeking a Sr IT Security Engineer to help design, build, and operate security capabilities that protect our cloud platforms, applications, AI-enabled solutions, and enterprise infrastructure.

This is a hands-on engineering role that combines cloud security, security operations, incident response, automation, and continuous security improvement.

You will work closely with engineering, cloud, platform, AI/ML, and operations teams to implement scalable security controls, strengthen detection and response capabilities, and support compliance and audit requirements.

Responsibilities

• You’ll innovate, collaborate, and grow – in an energetic technology culture with decades of proven success.
• Design and implement security controls across AWS and Azure environments.
• Build and enhance security operations capabilities, including SIEM/SOAR, detection engineering, alert triage, and incident response workflows.
• Support security investigations, incident response, and post-incident remediation activities.
• Improve identity and access management, encryption, logging, vulnerability management, and platform hardening controls.
• Develop automation, security tooling, standards, runbooks, and technical documentation.
• Partner with engineering teams to embed secure-by-design practices across applications, cloud services, and AI-enabled solutions.
• Participate in an on-call rotation supporting security incidents and escalations.
• Mentor junior engineers and contribute to security best practices across the organization.
• Qualifications Required 7+ years of hands-on experience in Security Engineering and/or Security Operations.
• Experience securing cloud environments, preferably across both AWS and Azure.
• Strong knowledge of SIEM/SOAR platforms, incident response, vulnerability management, and security monitoring.
• Experience supporting security incidents and on-call response activities.
• Strong communication, documentation, and stakeholder management skills.
• Ability to work independently and collaborate across multiple technical teams.
• Experience with Infrastructure-as-Code (IaC), Policy-as-Code, and continuous compliance frameworks.
• Knowledge of container and Kubernetes security.
• Experience with AI/LLM security, governance, testing, or monitoring.
• Exposure to regulated or audit-focused environments.
• Industry certifications such as CISSP, CCSP, AZ-500, AWS Security Specialty, GIAC, or equivalent.
• Why Join ACI?
• At ACI Worldwide, you'll help secure the technology that powers payments and commerce around the globe.
• You'll work with leading cloud and security technologies, collaborate with talented teams, and contribute to protecting critical systems used by financial institutions, merchants, and businesses worldwide.
• Core Capabilities: We seek colleagues who embody our core capabilities — these shape our culture and enable us to make a meaningful impact together: Ensure Accountability: holding self and others accountable to meet commitments.
• Drives Results: consistently achieving results, even under tough circumstances.
• Customer Focus: building strong customer relationships and delivering customer-centric solutions.
• Cultivate Innovation: creating new and better ways for the organization to be successful.
• Collaborates: building partnerships and working collaboratively with others.
• Courage: stepping up to address difficult issues, saying what needs to be said.
• I n 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 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. #LI-AP

Preferred qualifications and skills

• Preferred Experience with Python, PowerShell, Bash, Go, Ansible, or similar automation tools.

Employment details

• Location: Pune [Maharashtra] [India]

Additional role details

• Powering the world’s payments ecosystem ACI powers the payments ecosystem – globally, and you power ACI.
• 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.
• As a Sr IT Security Engineer in Pune , you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!