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AMRITESH K. — Senior Linux System Administrator from India

AMRITESH K.

Senior Linux System Administrator

India 6+ years
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About

Amritesh K. is a results-driven Linux System Administrator with 6 years of experience managing enterprise Linux environments at Times Internet and the Centre for Railway Information Systems (CRIS) in India. His technical expertise lies in system administration, web server configuration for Apache, Nginx, and Apache Tomcat, and the comprehensive management of VM life cycles. Amritesh ensures high availability and security compliance while maintaining large-scale IT operations. At CRIS, he administered Linux servers supporting mission-critical railway IT applications, managed web server configurations, VM provisioning, and security compliance through SSL/TLS certificate management. At Times Internet, he handled Linux infrastructure for significant digital media properties, using monitoring tools like Nagios, Grafana, and Zabbix to minimize downtime. Trained in AWS and Ansible fundamentals, Amritesh is continually enhancing his cloud and automation skills. He holds a B.Sc. in Computer Science and a Diploma in Computer Engineering.

Experience

  • Linux Administrator

    Centre for Railway Information Systems (CRIS)
    Administered and maintained Linux servers (CentOS 6/7, RHEL) for critical railway IT applications. Installed, configured, and optimized Apache and Nginx web servers, while managing Tomcat application deployments. Oversaw the lifecycle of virtual machines on VMware, including provisioning, migration across data centres, and backup processes. Deployed and renewed SSL/TLS certificates to uphold security standards. Configured NFS shares, SFTP, and SSH services for internal use. Implemented access control policies through ACL permissions and TCP Wrappers. Applied OS patches and security updates timely, ensuring adherence to uptime SLAs. Delivered L1 support via Jira ticketing, addressing and escalating infrastructure incidents as necessary.
  • Linux System Administrator

    Times Internet Limited
    Managed the Linux infrastructure (CentOS, Ubuntu) for a leading digital media enterprise in India. Utilized Nagios, Grafana, and Zabbix for system health monitoring, responding to alerts to reduce downtime. Configured and upheld Apache and Nginx web servers for high-traffic websites. Managed user and group administration, focusing on profile editing and access control. Offered hardware and network support while liaising with vendors for complex issues. Assisted with Windows environments (XP, 7, 8, 10, 11, Server 2008/2012) and configured MS Outlook.

Skills & Expertise

Education

  • Bachelor of Science in Computer Science
    BSEB · — — 2023
  • Diploma in Computer Engineering
    Govt. Polytechnic, Hisar (HSBTE) · — — 2018
  • 12th Standard
    BSEB · — — 2015
  • 10th Standard
    BSEB · — — 2013

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