Systems Administrator III

jobdiva

pune 6 Years Exp Posted 19d ago

Key Responsibilities:

1. Enterprise Linux Management

System Lifecycle: Lead the installation, configuration, and maintenance of Linux distributions including RHEL (6x, 7x, 8x) and Oracle Linux (6x, 7x).
Performance Engineering: Conduct deep-dive performance tuning and workload optimization to ensure maximum uptime and efficiency.
Storage & Filesystems: Administer LVM, Disk/Volume groups, NFS, and automount; expertly troubleshoot complex filesystem and mounting issues.
Kernel Diagnostics: Configure and analyze KDUMP/kernel dumps to perform root-cause analysis (RCA) on system crashes.

2. Automation & Modern Infrastructure

Infrastructure as Code: Drive operational efficiency by using Ansible, Puppet, or equivalent tools for configuration management and deployment.
Virtualization: Manage and build customized VM templates using VMware vSphere to support a dynamic virtual environment.
Hybrid Cloud: Support and manage integrated cloud services including AWS (EC2, S3, VPC, ELB, and Route 53).

3. Security, Networking & Compliance

Vulnerability Management: Proactively remediate and mitigate security vulnerabilities through structured change management.
Network Administration: Manage IP networking, static routing, and core protocols (FTP, SSH, SMTP, DNS, DHCP).
Access & Identity: Handle client-side LDAP configurations and troubleshoot user authentication issues.
Security Guarding: Maintain and configure host-based firewalls (IPTABLES/Firewalld).

4. Operational Excellence

ITIL Leadership: Act as a technical lead for Incident, Change, and Problem Management, providing detailed RCAs for P1/Critical tickets.
Hardware Ownership: Coordinate with vendors and manage physical infrastructure (HP ProLiant, Dell PowerEdge) and SAN/NAS storage connectivity.
Patching & Monitoring: Oversee enterprise-wide OS patching cycles and leverage SNMP-based tools for proactive system monitoring.

Required Qualifications & Skills:

Experience: 6+ years of relevant technical experience in a corporate Data Center environment.
Linux Mastery: Expert-level knowledge of Red Hat Satellite Server, RHN, and subscription management.
Automation Mindset: Proven experience moving from manual tasks to automated workflows (Ansible/Puppet).
The "Plus" Factor: Knowledge of secondary Unix flavors (Solaris, HP-UX) and SAN/NAS storage concepts.
Soft Skills: Exceptional documentation skills and a "continuous improvement" mindset. You should be a self-starter who can lead through ambiguity.
- Certification: RHCE (Red Hat Certified Engineer) is highly preferred.