Ashtech Infotech - Senior System Administrator - RHEL/Solaris (5-7 yrs)

Role Overview :

We are looking for a highly skilled Senior System Administrator to join our team.

In this role, you will be responsible for providing Level 3 technical support, managing and maintaining servers, and ensuring the stability and performance of the IT infrastructure.

You will work with high-end servers, storage, and operating systems while troubleshooting complex technical issues and ensuring the secure operation of systems.

You should have deep knowledge of server management, Linux-based systems, and storage solutions.

Key Responsibilities :

- Provide Level 3 support for all system-related issues, including troubleshooting hardware and software failures, performance bottlenecks, and configuration issues.

- Diagnose and resolve complex technical errors, offering detailed Root Cause Analysis (RCA) and solutions to resolve recurring issues.

- Work proactively to identify and resolve performance issues, ensuring system uptime and reliability.

- Manage and configure high-end servers from vendors such as Dell, HP, IBM, and SUN.

- Handle server firmware upgrades and apply patches and updates as required by system requirements or user needs.

- Install and configure Red Hat Linux (RHEL) systems, including kernel updates and client patching to meet client-specific configurations.

- Manage server hardening processes to enhance security.

- Perform P2V migrations (Physical to Virtual) and lead hardware migrations (e., from old hardware to new hardware) ensuring smooth transitions with minimal downtime.

- Configure and manage storage LUNs, adding and removing disks, and creating new file systems.

- Utilize expertise in Linux Logical Volume Manager (LVM), Veritas Volume Manager (VxVM), and Solaris SVM to manage volumes, including root disk encapsulation and mirror disk management.

- Perform disk configurations, and handle storage-related issues to ensure system availability and optimal performance.

- Implement NIC bonding using kernel modules to ensure network redundancy and performance.

- Manage and configure DNS servers, including installation, configuration, and record management (internal and external DNS).

- Support the installation and configuration of NFS and AutoFS for file sharing and management.

- Lead efforts in server hardening and ensure systems are secure against vulnerabilities, performing regular Vulnerability Assessment and Penetration Testing (VAPT), and remediating findings.

- Ensure compliance with ITIL processes, including Incident Management, Change Management, and Problem Management, following best practices for system administration.

- Maintain and enhance security protocols and configurations as part of patch management and server hardening.

- Strong Linux/Unix administration skills, especially in Red Hat Linux (RHEL), Solaris, and Linux-based systems.

- Extensive experience with server management (Dell, HP, IBM, SUN servers) and handling high-performance server setups.

- Solid experience with storage management, including knowledge of LVM, VxVM, and SVM.

- In-depth experience with P2V migration and hardware migration projects.

- Experience with firmware updates, disk configurations, and creating file systems on Linux and Unix-based servers.

- Strong understanding of DNS configuration and management, including internal DNS record management and NFS/AutoFS configuration.

- Proficient in ITIL processes for incident, change, and problem management