Srinivasan Kaliappan
Bengaluru
Summary
Strategic and results-driven cybersecurity leader with 17 years of experience in Data Protection, Vulnerability Management, and Cloud Security Operations. Proven track record in leading global security programs, designing secure infrastructure, and implementing risk-based mitigation strategies aligned with business objectives. Hands-on expertise in Information Rights Management (IRM), Data Loss Prevention (DLP), Cloud Access Security Broker (CASB), and cloud-native security controls across Azure and SaaS platforms. Skilled in DevSecOps, Agile delivery, and driving regulatory-compliant security frameworks (ISO 27001, GDPR, NIST). Recognized for building and mentoring high-performance teams, fostering strong relationships with global stakeholders, and ensuring seamless integration of security architecture into digital transformation and cloud adoption initiatives.
Overview
18
18
years of professional experience
1
1
Certification
2
2
years of post-secondary education
Work History
Senior System Manager
05.2023 - Current
- Architected and deployed Azure Information Protection (AIP) with organization-wide sensitivity labels and classification policies, enabling secure data handling across endpoints, email, and collaboration platforms.
- Implemented enterprise-grade encryption and tokenization frameworks for both structured and unstructured data across Microsoft 365 and Azure ecosystems.
- Collaborated with cybersecurity teams to assess post-quantum cryptography readiness and initiated alignment with NIST PQC candidate algorithms to future-proof cryptographic posture.
- Designed and implemented Microsoft AD Certificate Services (ADCS) for scalable certificate issuance and governance across enterprise workloads.
- Led enterprise PKI operations using Microsoft PKI, Venafi, and Keyfactor, streamlining certificate lifecycle management (CLM) with automation and policy enforcement.
- Upgraded Venafi Control Plane, enhancing certificate visibility, policy enforcement, and audit readiness.
- Onboarded critical applications into Keyfactor CA, enabling centralized certificate automation and minimizing manual intervention.
- Reduced certificate-related outages by 90% through real-time monitoring dashboards, automated renewals, and proactive compliance tracking.
- Administered and maintained CyberArk and SSH PrivX for privileged access control, ensuring secure vaulting, session recording, and just-in-time (JIT) access across critical systems.
- Eliminated hard-coded credentials in application configurations, significantly improving audit readiness and compliance with internal policies.
- Integrated and managed enterprise-grade HSMs including SafeNet Luna, CipherTrust Manager, Azure Key Vault, and FutureX, ensuring secure cryptographic key storage and usage.
- Defined and enforced cryptographic lifecycle policies covering key generation, rotation, archival, and retirement per FIPS 140-2 and organizational standards.
- Secured Root CA private keys within HSMs, mitigating risks of unauthorized access and ensuring compliance with PKI best practices.
- Managed Active Directory (AD), Entra ID (formerly Azure AD), and IAM controls, implementing Conditional Access, MFA, and Role-Based Access Control (RBAC) across hybrid environments.
- Operationalized Zero Trust principles for user, device, and application access across enterprise workloads.
- Closed multiple ISO 27001, GDPR, and NIST CSF control gaps by aligning technical implementations with compliance frameworks.
- Authored Standard Operating Procedures (SOPs) and incident response playbooks for certificate outages and PAM-related security incidents.
Senior System Manager
03.2021 - 01.2023
- Led patching, vulnerability remediation, and PMO operations for a team of 50 members, managing 55,000 Windows/Linux servers and ESXi hosts.
- Developed and implemented policies, standards, and procedures for security governance and compliance, with a focus on patch and vulnerability management.
- Managed end-to-end workflows, RACI matrices, and process reviews for efficient patch and vulnerability management.
- Automated patch deployment for 5,500 lab servers using BigFix, improving operational efficiency and accuracy.
- Partnered with Threat Intelligence, Red Team, Purple Team, and Vulnerability Management teams to prioritize risk-based remediation strategies.
- Prioritized issues and assigned ownership to ensure timely resolution of vulnerabilities.
- Applied patches and configuration changes; implemented mitigations, such as access controls and firewalls, when patches were unavailable.
- Re-scanned systems to confirm vulnerabilities were resolved, tested stability post-remediation, and ensured operational readiness.
- Recorded actions taken, including dates, methods, and outcomes; updated risk registers and prepared detailed compliance reports to maintain transparency and alignment with organizational objectives.
- Ensured compliance with PCI DSS and other industry standards related to patch and vulnerability management.
- Resolved regulatory, external, and internal audit findings associated with security vulnerabilities.
- Drove the closure of regulatory, external, and internal audit findings related to vulnerability and patch management.
- Maintained inventory, process documentation, and compliance analysis.
- Provided threat-based advice and actionable recommendations to stakeholders.
- Ensured high customer satisfaction through SLA adherence and process compliance.
- Led hiring efforts, including interviewing, onboarding, and training team members.
- Managed budget allocation for team resources, ensuring cost efficiency and operational effectiveness.
- Conducted performance reviews, including one-on-one discussions, to align individual performance with organizational goals.
- Fostered team collaboration across cross-functional teams, enhancing productivity and innovation.
- Provided coaching and mentorship to team members, improving overall team performance and morale.
System Manager
FIS Global
12.2017 - 03.2021
- Directed infrastructure operations across 14,000+ servers in global data centers (North America, UK), ensuring 24/7 uptime and SLA adherence.
- Provided expert-level leadership for Windows and VMware ecosystems, handling escalations, P1/P2 incidents, and complex L3 troubleshooting.
- Streamlined patching, server builds, and decommissioning projects; led ESXi remediation and Get-Well initiatives with measurable stability improvements.
- Championed operational excellence through automation (BigFix, Resolve), reducing manual workload and improving service efficiency.
- Led a high-performing team, drove daily operations and technical governance, and collaborated with cross-functional teams to deliver strategic IT outcomes.
- Delivered continuous service improvement and ensured compliance with ITIL, audit, and security standards.
Team Lead – Infrastructure Services
Accenture (Client: ERC)
05.2013 - 12.2017
- Managed 24x7 support for 5,000+ physical and virtual servers, leading critical infrastructure operations across global data centers.
- Delivered robust L2/L3 support for Windows Server and VMware platforms (vSphere, vCenter, HA/DRS, SRM), ensuring system resilience and availability.
- Drove DR activities, infrastructure monitoring (SCOM, Tivoli), and proactive capacity planning to support business continuity.
- Collaborated with automation teams to develop scripts and tools (PowerShell, PowerCLI) for health checks and performance tuning.
- Ensured full ITIL process alignment across incident, problem, and change management, enhancing service delivery and operational KPIs.
Senior System Engineer
FIS Technology Operations / Data Center Support
09.2007 - 05.2013
- Provided end-to-end support for enterprise Windows infrastructure across FIS India branches, including AD, DNS, DHCP, DFS, and Windows Clustering.
- Led critical upgrade projects such as Windows 2000/Exchange 2000 to 2003 AD migration and hardware refreshes (HP, IBM, Dell).
- Served as single point of contact for Lotus Domino R5/R6 environments—oversaw installation, configuration, and administration.
- Managed server patching, performance tuning, and DR testing to ensure high availability and compliance.
- Resolved escalated issues with strict SLA adherence and collaborated with global teams for infrastructure stability.
- Contributed to Windows server builds, access management, and FileNet application support, ensuring secure and optimized performance.
Education
Bachelor of Computer -
University Madras
Chennai01.2004
MCA - Information Technology
University of Madras
Chennai 03.2005 - 06.2007
Skills
- Azure Information Protection
- Enterprise encryption
- CyberArk management
- Certificate lifecycle management
- Zero Trust implementation
- Compliance auditing
Certification
- Certified Information Security Auditor
- Azure Security Engineer
- Azure Solution Architect
- PRINCE2 Foundation & Practitioner
- ITIL (Information Technology Infrastructure Library)
- VMware Certified Professional on vSphere 5.5
- MCTS (Microsoft Certified Technology Specialist)
- MCSA (Microsoft Certified Systems Administrator)
Timeline
Senior System Manager
05.2023 - Current
Senior System Manager
03.2021 - 01.2023
System Manager
FIS Global
12.2017 - 03.2021
Team Lead – Infrastructure Services
Accenture (Client: ERC)
05.2013 - 12.2017
Senior System Engineer
FIS Technology Operations / Data Center Support
09.2007 - 05.2013
MCA - Information Technology
University of Madras
03.2005 - 06.2007
Bachelor of Computer -
University Madras