R Mohan
Senior Linux Administrator
Madurai
Summary
At Abservetech Private Limited, I spearheaded IT solutions, enhancing system and network security through advanced configurations and proactive monitoring, notably reducing downtime. My expertise in Linux administration and AWS, coupled with a knack for mentoring, significantly improved team efficiency and system performance. My approach seamlessly blends technical acumen with collaborative leadership.
Overview
13
13
years of professional experience
2
2
years of post-secondary education
1
1
Certificate
Work History
Senior System Administrator
Abservetech Private Limited
Madurai, India
11.2018 - Current
- Collaborated with cross-functional teams to design and deploy customized IT solutions, meeting specific organizational needs.
- Completed reports detailing network and systems performance and downtime issues.
- Reduced downtime with proactive system monitoring and timely issue resolution.
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Implemented monitoring tools for real-time analysis of system performance, allowing for proactive identification of potential issues before they impacted users.
- Improved system performance by optimizing Linux server configurations, implementing efficient backup processes, and performing regular maintenance tasks.
- Provided hands-on support for end-users experiencing issues with Linux-based systems or applications, facilitating quick resolutions and minimal disruptions to productivity.
- Provided training and mentoring to junior team members, building their skills in Linux administration and fostering a collaborative work environment.
- Developed scripts for automating routine tasks, reducing human error and increasing overall efficiency in the administration process.
- Reduced downtime during planned system upgrades, maintaining seamless user experiences through thorough testing and rollback planning.
- Enhanced network security by implementing firewall rules, intrusion detection systems, and fine-tuning access controls on Linux servers.
- Streamlined workflow for the IT team by automating routine tasks using shell scripting and Python.
- Improved cloud infrastructure efficiency by implementing automated monitoring and scaling tools.
- Facilitated cost optimization by identifying unused resources, recommending right-sizing instances, and leveraging reserved instances or spot pricing on AWS.
- Ensured high levels of data security by enforcing encryption methods, policy management, and network access control within the AWS platform.
- Optimized application performance by integrating Amazon RDS databases into cloud architecture designs.
- Improved application availability by designing and implementing effective disaster recovery strategies using AWS backup services.
Senior System Network Administrator
OptiSol Business Solutions Private Limited
Madurai
03.2012 - 10.2018
- Enhanced network security by implementing advanced firewall configurations and intrusion detection systems.
- Evaluated emerging technologies regularly to ensure the organization remained at the forefront of industry developments and maintain a competitive edge.
- Optimized PC performance through regular updates, patches, and system upgrades.
- Configured hardware, devices, and software to set up work stations for employees.
- Installed new or upgraded hardware and software and coordinated installation and follow-up with user to achieve customer satisfaction.
- Managed inventory of IT assets including hardware components and software licenses to maintain accurate records and ensure compliance with company policies.
- Removed malware, ransomware, and other threats from laptops and desktop systems.
- Enhanced system performance by troubleshooting and resolving software, hardware, and network issues.
- Monitored system performance to maintain system integrity.
- Maintained inventory of installed desktop hardware and software components to keep records accurate and updated.
- Improved help desk ticket resolution times through diligent prioritization of requests based on urgency level.
- Performed day-to-day LAN and WAN administration, maintenance, and support.
- Maintained network hardware and software and monitored network to support network availability to end users.
Education
MBA - HR & Finance
Institute of Cooperative Management
Madurai 06.2009 - 05.2011
Skills
System updates
Active Directory management
System upgrades
Technical support
Troubleshooting
Infrastructure planning
System automation
Backup and recovery
Windows administration
Server hardware maintenance
Program installations
Scripting languages
IT security management
Capacity planning
Incident management
Network administration
ITIL framework
Linux administration
Server maintenance
Desktop troubleshooting
Helpdesk operations
System monitoring
Hardware troubleshooting
Web security
Active directory
Firewall configuration
IP addressing and subnetting
Virus protection
Network security
Jenkins pipeline
Jenkins build
Jenkins automation
Nerelic Monitoring Tool
Apache
AWS
Google Cloud
SSL Installation
DNS Service
Reporting in Excel
CCTV Installation
Infrastucture setup Planning
Microsoft Azure
Timeline
Senior System Administrator
Abservetech Private Limited
11.2018 - Current
Senior System Network Administrator
OptiSol Business Solutions Private Limited
03.2012 - 10.2018
MBA - HR & Finance
Institute of Cooperative Management
06.2009 - 05.2011
Computer Hardware and Networking
07-2004
Certification
Computer Hardware and Networking