Results-driven Senior Linux System Administrator with 15+ years of enterprise IT experience designing, securing, and automating large-scale Linux/Unix infrastructure across banking, healthcare, and aerospace sectors. Proven expertise in Ansible automation, patch management, system hardening, VMware virtualization, and high-availability architecture. Currently expanding into cloud engineering with hands-on AWS training (EC2, S3, IAM, VPC, CloudWatch). Adept at cross-team collaboration, mentoring engineers, and delivering infrastructure aligned with security and compliance standards. Actively seeking roles in Linux/Cloud Administration, DevOps Engineering, or Site Reliability Engineering.
Linux Administration (RHEL, CentOS, Ubuntu, Solaris, AIX)
Ansible & Ansible Tower
Bash / Shell Scripting
AWS (EC2, S3, IAM, VPC, CloudWatch)
VMware vSphere & KVM
Patch Management & System Hardening
NAS / SAN Storage (NFS, CIFS, Oracle ASM)
High Availability Architecture
Oracle Database Integration
LDAP & DNS Administration
Incident & Change Management (ITIL)
Team Leadership & Mentoring
Git
CI/CD Concepts
Terraform (Learning)
```
Systems Integration Specialist (Senior Linux SME)
NTT DATA Global Delivery Services Ltd — London
Nov 2022 – Feb 2026
- Led Linux infrastructure operations supporting 1,000+ enterprise servers across critical banking environments, maintaining 99.9%+ uptime SLA.
- Served as Subject Matter Expert (SME) for RHEL and Solaris platforms, providing Level 3 escalation support for complex P1 incidents.
- Designed and implemented an automated patching framework using Ansible Tower, reducing manual patching effort by 60% and improving patch compliance to near 100%.
- Authored and maintained 25+ Ansible configuration management playbooks to enforce security baselines and compliance standards across all managed nodes.
- Administered VMware vSphere and OLVM virtualization platforms, managing provisioning, resource allocation, and performance tuning for Linux workloads.
- Collaborated with security and compliance teams to meet regulatory audit requirements (PCI-DSS, ISO27001), producing evidence packs and remediating findings.
- Mentored and upskilled 4 junior engineers through structured knowledge-sharing sessions and hands-on technical coaching.
Senior Systems Analyst
NTT DATA
Jun 2020 – Oct 2022
- Managed OS lifecycle operations including installation, patching, upgrades, and performance tuning across a mixed RHEL/Solaris estate.
- Led root cause analysis (RCA) for high-severity (P1/P2) incidents, implementing preventive controls that reduced repeat incidents by ~30%.
- Managed NAS storage provisioning, NFS/CIFS protocol configuration, and Oracle ASM disk group administration.
- Provided 24×7 on-call support within Infrastructure Operations rota, ensuring rapid response to critical production issues.
- Supported VMware vSphere environments including new server provisioning, snapshots, and VM lifecycle management.
Senior Technical Executive
NTT DATA
Jun 2013 – May 2020
- Executed enterprise Linux/Unix deployment projects, integrating new infrastructure into production environments with zero-downtime cutovers.
- Managed virtualization platforms, SAN/NAS storage systems, and drove system performance optimisation initiatives.
- Implemented system hardening standards aligned with CIS benchmarks and internal security frameworks.
- Coordinated cross-functional troubleshooting with network, database, and application teams to resolve complex multi-tier incidents.
Junior Technical Executive
NTT DATA
Mar 2011 – Jun 2013
- Monitored Unix ETL workflows and automated reporting and alerting tasks via Shell scripting and Cron job management.
- Managed ServiceNow incident queues, triaging and escalating tickets to 3rd line engineering as required.
- Supported production infrastructure stability and contributed to cross-team technical issue resolution.
```
Operating Systems
RHEL 7/8/9, CentOS, Ubuntu, Solaris 11, AIX, HP-UX
Cloud — AWS
EC2, S3, IAM, VPC, CloudWatch, Route 53 (actively upskilling)
Automation & Scripting
Ansible, Ansible Tower, Bash, Shell Scripting
Virtualization
VMware vSphere, ESXi, OLVM, KVM
Storage
NAS, SAN, NFS, CIFS, Oracle ASM
DevOps / Tools
Git, CI/CD concepts, Terraform (learning), ServiceNow
Security & Compliance
System Hardening, CIS Benchmarks, Patch Management, SOX/PCI-DSS
Monitoring
Performance Tuning, Log Analysis, Infrastructure Monitoring
ITIL v3 Foundation Certified
AWS Certified Cloud Practitioner In Progress
2026
AWS Solutions Architect Associate Planned
2026
B.Sc. Computer Science
AJK College of Arts & Science, Coimbatore
2007 – 2010