Sreejith Ajay
Pune
Summary
Dynamic Linux Administrator with extensive experience at Vodafone India Services Pvt Ltd, excelling in RHEL administration and OCI compute management. Proven track record in performance tuning and incident resolution, leveraging strong problem-solving skills to enhance system stability and operational excellence. Adept at vendor coordination and automation, driving efficiency in complex environments.
Overview
5
5
years of professional experience
5
5
Certifications
Work History
Linux Administrator (Assistant Manager)
Vodafone India Services Pvt Ltd
02.2021 - Current
- Managing end-to-end administration of RHEL 6/7/8/9 and Oracle environments across on-premises virtual and physical infrastructures, including Exadata platforms and OCI compute instances.
- Performing installation, patching, and deployment of software packages across Linux environments, ensuring system stability and compliance.
- Managing and provisioning OCI compute resources including compute instances, block/boot volumes, object storage, backup/recovery operations, and troubleshooting OCI Linux instances (boot, networking, storage).
- Handling storage and disk management including partitioning, provisioning, addition/removal, and native multipathing configuration.
- Executing full lifecycle system administration tasks including OS installation, configuration, monitoring, and advanced troubleshooting.
- Monitoring system logs, root email alerts, and hardware warnings to proactively resolve issues.
- Administering Veritas Volume Manager (VxVM) and managing file systems.
- Troubleshooting network-related issues impacting connectivity and performance.
- Configuring and managing LVM for mirroring, striping, resizing, and optimization.
- Setting up and maintaining NFS-based file sharing across environments.
- Conducting performance tuning and resolving system bottlenecks.
- Performing routine housekeeping and maintenance of Linux servers.
- Managing user administration including account creation, modification, access control, and compliance.
- Troubleshooting Infoscale/VCS cluster issues to ensure high availability.
- Performing firmware upgrades on HP, Dell, and Huawei servers and resolving hardware issues including DIMM, disk, and power component failures.
- Coordinating with vendors for hardware and OS-level escalations.
- Participating in P1/P2 bridge calls and delivering fixes within SLA.
- Automating operational tasks using BMC TrueSight Server Automation.
- Preparing deployment plans and executing controlled production changes.
- Working closely with Incident Management to resolve high-priority issues.
- Utilizing Remedy and ServiceNow for change, incident, and problem management.
System Administrator
Maxvalue Credits & Investment Ltd
08.2020 - 01.2022
- Performed daily maintenance and administration of multiple UNIX/Linux systems including OS patching, upgrades, and preparation for new product releases.
- Analyzed and resolved issues related to Linux servers, hardware components, applications, and system software across Red Hat Linux and CentOS environments.
- Collaborated with product development teams to implement and support client solutions including installation and maintenance of Java Application Servers and Database Servers.
- Supported application teams with VCS/NAS failover and database teams with CRS stop/start operations.
- Monitored system health using Grafana and responded promptly to alerts.
- Demonstrated strong troubleshooting skills in IP networking, static routing, and high-availability environments.
- Provided 24/7 on-call support, performed scheduled changes, and participated in weekly Change Management meetings.
- Handled MIM/P1/P2 bridge calls, performed RCA, and ensured timely resolution of major incidents.
- Diagnosed and resolved hardware issues involving single and multiple point failures, coordinating with vendors such as HP, Veritas, and Red Hat.
- Managed multiple tasks independently while collaborating effectively with cross-functional teams.
- Maintained strong documentation practices and demonstrated proactive problem-solving and decision-making skills.
Education
Bachelor of Technology - Electronics And Communications Engineering
APJ Abdul Kalam Technological University
Kerala06-2019
Skills
- Linux & On-Prem Infrastructure
- RHEL 6/7/8/9 Administration
- Veritas Volume Manager (VxVM)
- LVM
- Multipathing
- NFS
- OS Installation & Configuration
- Performance Tuning & Monitoring
- HP/Dell/Huawei Hardware
- Infoscale/VCS Cluster Management
- Exadata & Oracle Environments
- OCI Compute
- OCI Block & Boot Volumes
- OCI Backup & Recovery
- Operational Excellence
- Incident & Change Management (ServiceNow, Remedy)
- P1/P2 Incident Handling
- BMC TrueSight Automation
- Root Cause Analysis (RCA)
- Vendor Coordination
- Documentation & Reporting
Languages
English
Proficient (C2)
C2
Hindi
Advanced (C1)
C1
Malayalam
Native
Native
Certification
Oracle Certified Foundation AI Associate (2025) - Certified
Accomplishments
Top Performer Award - Vodafone
Timeline
Linux Administrator (Assistant Manager)
Vodafone India Services Pvt Ltd
02.2021 - Current
System Administrator
Maxvalue Credits & Investment Ltd
08.2020 - 01.2022
Bachelor of Technology - Electronics And Communications Engineering
APJ Abdul Kalam Technological University