Job Purpose : The Sr. Security Engineer is responsible for designing, implementing, hardening, and supporting enterprise security capabilities that protect company systems, platforms, and information assets. This role blends hands-on security engineering with operational execution across cloud security, security operations, incident support, and AI security use cases.

Essential Functions and Responsibilities :

- Design, implement, and continuously improve secure configurations and guardrails across enterprise and cloud environments, including identity and access controls, network protections, encryption, secrets management, logging, and platform hardening.
- Engineer, administer, and support enterprise security technologies spanning endpoint security, vulnerability management, SIEM/logging, identity management, monitoring, detection, and cryptographic controls.
- Drive remediation of security findings by prioritizing critical and high-risk issues, validating corrective actions, and improving repeatable control patterns.
- Build, operate, and enhance security operations capabilities, including detection engineering, SIEM/SOAR workflows, alert triage, investigation support, incident response playbooks, and operational runbooks.
- Conduct or support incident investigations, root-cause analysis, containment and eradication activities, and lessons-learned follow-through.
- Participate in the on-call support rotation for security incidents, provide technical support during active investigations and response activities, and contribute to post-incident remediation and continuous improvement.
- Develop and maintain technical documentation, engineering standards, implementation procedures,



and evidence-quality artifacts to support operational consistency and audit readiness.- Perform technical assessments and proof-of-concept evaluations of new security solutions and recommend changes to procedures, standards, or tooling where appropriate.- Participate in audits, control reviews, and security assessments; support evidence collection, traceability, and remediation tracking.
- Mentor less experienced engineers and contribute to technical leadership across the team.
- Perform other duties as assigned and understand and adhere to all corporate policies, including the ACI Code of Business Conduct and Ethics.

Qualifications (Education, Experience, Knowledge, Skills, and Abilities) :

- Bachelor’s degree in Computer Science, Information Systems, Cybersecurity, MIS, or related field; equivalent practical experience may be considered.
- 5+ years of experience in security engineering and/or security operations with demonstrated hands-on delivery.
- Strong working knowledge of security fundamentals across identity and access management, encryption, network security, secure logging/telemetry, configuration hardening, and vulnerability/risk remediation.




- Experience implementing and supporting security controls in at least one major cloud environment; direct experience across both AWS and Azure is strongly preferred.
- Demonstrated experience with security operations processes and tooling, such as SIEM/SOAR, detection engineering, alert triage, incident support, security scanning, or operational playbooks.
- Demonstrated ability to translate security findings into practical engineering improvements, documentation, and measurable operational outcomes.
- Experience developing technical documentation, standards, and runbooks for repeatable operational execution.
- Solid communication skills and the ability to work effectively with both technical and non-technical stakeholders.
- Ability to work independently on complex assignments with limited day-to-day supervision.

Preferred Qualifications :

- Experience with regulated or audited environments and supporting evidence traceability or control mapping.
- Experience with automation and scripting in Python, PowerShell, Bash, Go, Ansible, or similar tooling.
- Experience with policy-as-code, infrastructure-as-code security gates, or continuous compliance patterns.
- Experience with container, Kubernetes, or workload identity security.
- Experience with threat hunting, post-incident remediation, and engineering-driven control improvements.- Advanced knowledge of security standards and frameworks.
- Experience mentoring junior team members.

Licenses and Certifications : Work Environment :

- Standard work environment.
- Majority of time spent on PC.
- Participation in an on-call rotation is required to support incident response, escalations, and urgent security events.
- Travel may be required on a limited basis.

📌 Sr IT Security Engineer (Pune)
🏢 ACI Worldwide
📍 Pune