Hi, I’m
Ragunathan Rajan
Senior Linux Administrator
Hyderabad
Summary
Resourceful System Administrator consistently responds to wide range of technical challenges with focused and creative approach. Highly effective at problem solving and decision making. 17 years of progressive IT experience.
Overview
17
years of professional experience
4
years of post-secondary education
2
Certifications
Work History
Unisys India Pvt LtdHyderabad
Senior Linux Administrator
10.2022 - Current
Job overview
- Installed system-wide hardware components, confirming interoperation and compatibility with Linux-based software distros.
- Coordinated cross-site installation of Linux systems, confirming post-install connectivity.
- Created and serviced administrator and user accounts on Linux-based systems, managing 2000 deployments.
- Planned and implemented upgrades to system hardware and software.
- Identified and resolved Linux server issues and bottlenecks.
- Developed organization-wide administration policies to encourage continuity across multiple systems and facilities.
- Implemented, developed and tested installation and update of file servers, print servers and application servers.
- Tuned system performance to optimize efficacy of new and existing hardware components.
- Interacted directly with users to diagnose and correct major system issues and address concerns.
- Monitored Linux servers and Unix Servers to resolve technical problems quickly.
- Analyzed complex project Linux server issues and worked on large enterprise and business-critical applications.
- Implemented and maintained virtual and cloud Linux servers.
- Resolved vulnerabilities by making improvements to Linux system security.
- Designed disaster recovery systems, enabling continuity in event of power outages.
- Evaluated software products to determine compatibility with existing systems.
- Resolved trouble tickets to reduce backlog from 5000 to 150.
- Diagnosed and executed resolution for Linux server issues.
- Devised scripts and automation tools to improve system efficiency.
- Developed and documented policies, procedures and standards.
- Led server infrastructure development, quality assurance, staging and production systems.
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Diagnosed and resolved hardware and software issues.
- Maintained flexible schedule and responded to after-hours and weekend emergencies.
- Researched and recommended new technologies and strategies for improving system performance.
- Maintained smooth operation of multi-user Linux systems through collaboration with hardware and application teams.
- Maximized Linux system availability through development and testing of contingency plans.
Wipro Technologies LtdChennai
Technical Lead
05.2021 - 10.2022
Job overview
- Investigated Linux system issues and implemented resolutions to reduce downtime.
- Evaluated and adopted new technologies to address changing industry needs.
- Provided educational expertise and mentoring to junior team members.
- Offered input on technical and platform-related strategic planning initiatives.
- Installed Linux system updates to address vulnerabilities and reduce security issues.
- Organized Linux system operating procedures to strengthen controls.
- Drove technical initiatives for large enterprise Linux systems to align with long-term business strategies.
- Installed and configured Linux Systems
HCL Technology Ltd Chennai
Associate Consultant
02.2016 - 05.2021
Job overview
- Evaluated diverse organizational Linux systems to identify workflow, communication, and resource utilization issues.
- Compiled research data and gave professional presentations highlighting finds and recommended optimizations.
- Reviewed internal systems and organized training plans to address areas in need of improvement.
- Helped team of 15 lead consultants optimize efficiency of current systems by conducting training sessions.
- Led various projects under guidance and supervision of chief consultant.
- Supported clients with business analysis, documentation, and data modeling.
- Delivered outstanding service to clients to maintain and extend relationship for future business opportunities.
- Created monthly forecast templates and resource management allocations for approved projects.
- Implemented practices and procedures to reduce expenditures and increase savings.
T Systems Pvt Ltd Cyberjaya
Systems Engineer
06.2012 - 12.2015
Job overview
- Proposed technical feasibility solutions for new Linux system designs and suggested options for performance improvement of technical components.
- Streamlined troubleshooting processes to improve Linux system support and enhance communication between support team and end-users.
- Maintained stability, integrity and efficient operation of information Linux systems supporting organizational functions.
- Checked for accuracy and functionality during implementation of new Linux systems.
- Completed software updates and assessed security patches for optimized Linux server use.
- Documented Linux system configuration, mapping and processes.
- Analyzed logs to determine and alleviate Security threats.
- Supported Linux system users, educating employees on troubleshooting and problem-solving protocols.
- Suggested Linux system updates or changes after conduct in-depth technical reviews.
- Handled scripting tasks for debugging and automation using BASH
- Assisted employees with resolving Linux server problems at remote locations.
- Configured, installed and upgraded Linux servers
- Optimized Linux operating systems by applying updates and patches.
Emerio Pvt LtdCyberjaya
Technical Consultant
01.2010 - 04.2012
Job overview
- Installed Linux and Unix system updates to address vulnerabilities and reduce security issues.
- Authored best practices documentation for use in new personnel Linux and Unix server onboarding processes.
- Improved Linux systems with addition of new features and infrastructure.
- Troubleshot Linux and Unix systems comprised of security alarms and Internet connectivity.
- Enhanced and reconstructed Linux systems to increase efficiency.
- Organized Linux system operating procedures to strengthen controls.
- Investigated Linux system issues and implemented resolutions to reduce downtime.
- Analyzed existing Linux systems and databases and recommended enhancements to solve business needs
- Troubleshot incidents reported by end-users to schedule Linux system changes and identify permanent solutions.
- Re-engineered existing Linux systems to promote ease-of-use and improve system security.
- worked in incidents , changes ,problem tickets
PCS Technology LtdBangalore
Customer Support Engineer
09.2007 - 12.2009
Job overview
- Used Windows diagnostic tools to identify sources of certain customer issues.
- Answered calls and emails at help desk to assist customers with basic support, bug fixes and configuration issues.
- Delivered exceptionally high level of professionalism and support to each customer, upholding company's commitment to service.
- Tested new software and hardware prior to deployment on Windows systems
- Diagnosed and troubleshot hardware, software and network issues.
- Responded to customer inquiries and provided technical assistance over phone and in person.
- Helped streamline Windows system repair processes and update procedures for support action consistency.
- Installed, configured and maintained windows computer systems and network connections.
- Removed malware, ransomware, and other threats from laptops and desktop systems.
- Created user accounts and assigned permissions.
- Installed and configured Windows operating systems and applications.
- Configured and tested new software and hardware on Windows systems
- Developed and implemented preventive maintenance procedures.
- Broke down and evaluated user problems, using test scripts, personal expertise, and probing questions.
- Maintained servers and systems to keep networks fully operational during peak periods.
- Researched and identified solutions to technical problems.
- Patched software and installed new versions to eliminate security problems and protect data.
HCL Infosystems LtdBangalore
Customer Support Engineer
06.2006 - 07.2007
Job overview
- Used Windows diagnostic tools to identify sources of certain customer issues.
- Answered calls and emails at help desk to assist customers with basic support, bug fixes and configuration issues.
- Diagnosed and troubleshot hardware, software and network issues.
- Installed, configured and maintained Windows computer systems and network connections.
- Removed malware, ransomware, and other threats from Windows laptops and desktop systems.
- Created user accounts and assigned permissions.
- Installed and configured Windows operating systems and applications.
- Configured and tested new software and hardware.
- Developed and implemented preventive maintenance procedures.
- Broke down and evaluated user problems, using test scripts, personal expertise, and probing questions.
- Maintained Windows systems to keep networks fully operational during peak periods.
Education
Annamalai University Chennai,India
Bachelor of Science from Information Technology
05.2012 - 12.2013
Department of Technical Education Chennai,Tamilnadu State ,India
High School Diploma
06.1998 - 12.2000
Skills
Redhat Linux
Multi-User System Management
System monitoring
Knowledge with RedHat
Server Management
Performance testing
Hardware knowledge
System upgrades
Servers expertise
Technical Analysis
Ansible
Azure cloud
Redhat Satellite server
Bash scripting
Kubernetes container
Server support
Certification
HP Unix 11iV3 Administrator
Availability
See my work availability
Not Available
Available
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Senior Linux Administrator
Unisys India Pvt Ltd
10.2022 - Current
Technical Lead
Wipro Technologies Ltd
05.2021 - 10.2022
Azure Administrator Associate
11-2019
Associate Consultant
HCL Technology Ltd
02.2016 - 05.2021
Systems Engineer
T Systems Pvt Ltd
06.2012 - 12.2015
Annamalai University
Bachelor of Science from Information Technology
05.2012 - 12.2013
Technical Consultant
Emerio Pvt Ltd
01.2010 - 04.2012
Customer Support Engineer
PCS Technology Ltd
09.2007 - 12.2009
HP Unix 11iV3 Administrator
06-2007
Customer Support Engineer
HCL Infosystems Ltd
06.2006 - 07.2007
Department of Technical Education
High School Diploma
06.1998 - 12.2000