Sunil Kumar
@sunilkumar20
Experienced Linux systems administrator specializing in large-scale hosting.
IndiaWhat I'm looking for
I am a Linux Systems Administrator with 13+ years' experience managing and monitoring large-scale hosting environments, including 24/7 NOC operations for 1500+ servers. I have deep hands-on expertise across Debian/Ubuntu and RHEL/CentOS, web and mail servers, virtualization (OpenVZ, Xen, KVM, Virtuozzo), databases (MySQL/Percona), and network services, and I hold certifications including RHCE and AWS Solutions Architect Associate.
In my recent role as Senior System Administrator at A2 Hosting I led monitoring, troubleshooting, malware detection and remediation, MySQL replication fixes and VPS management, added services to Icinga, documented tasks in JIRA/Confluence, and stepped into team leadership when needed — achievements include Employee of the Year (2015) and multiple performance awards.
Experience
Work history, roles, and key accomplishments
AHSr. System Administrator
A2 Hosting
Aug 2016 - Apr 2025 (8 years 8 months)
Managed 24/7 monitoring and operations for 1500+ servers, led incident response for shared and VPS environments, and implemented malware detection/remediation and MySQL replication fixes to improve platform reliability.
Sr. Systems Administrator
Diya Systems Pvt. Ltd.
Monitored and debugged customer servers, performed malware removal and backups, and coordinated with engineering to resolve infrastructure issues for hosting customers.
Education
Degrees, certifications, and relevant coursework
Unknown Institution (Diploma in Information Science)
Diploma in Information Science, Information Science
Completed a Diploma in Information Science focused on foundational IT and computing topics.
Unknown Institution (Diploma in Computer Applications)
Diploma in Computer Applications, Computer Applications
Completed a Diploma in Computer Applications covering practical computer skills and software applications.
RHRed Hat
Red Hat Certified Engineer (RHCE), Linux System Administration
Obtained Red Hat Certified Engineer (RHCE) certification validating advanced Linux system administration skills.
AAAmazon Web Services (AWS)
AWS Certified Solutions Architect – Associate, Cloud Architecture
Earned AWS Certified Solutions Architect - Associate credential covering core AWS services such as EC2, S3, VPC, RDS, IAM, and Route 53.
Availability
Location
IndiaAuthorized to work in
Job categories
Skills
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