Summary
Overview
Work History
Education
Skills
Social Links
Timeline
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Sahana S

Sahana S

Technical Application Specialist
Bengaluru

Summary

As a Unix Administrator with extensive experience in managing Linux and Solaris environments across enterprise-grade platforms including VMware, Dell, Cisco and IBM. Demonstrated expertise in both on-premises and cloud-based infrastructure, ensuring seamless performance, scalability, and security of mission-critical systems. Known for a proactive approach to problem-solving, deep technical knowledge, and strong commitment to operational excellence. A collaborative team player and mentor who consistently delivers under pressure and meets tight SLAs in fast-placed environments.

Overview

4
4
years of professional experience
3
3
years of post-secondary education
3
3
Languages

Work History

Technical Application Specialist

Epicor
01.2024 - Current
  • Working as a Technical application specialist at Epicor which deals with an ERP products.
  • Providing technical assistance, troubleshooting, and support for Linux server to Epicor Eclipse ERP users users via phone, email, or remote access which involves diagnosing software issues, assisting with updates, and ensuring smooth operation of the ERP system for business processes.
  • Administered and supported Red Hat Enterprise Linux environments RHEL 7, and 8, across VMware, on-premises, and Azure cloud platforms.
  • Managed the lifecycle of Linux servers—installation, configuration, patching, performance tuning, and decommissioning—ensuring system stability and compliance.
  • Responded and resolved service tickets through ServiceNow, addressing issues related to Linux servers, applications, user accounts, and application services within SLA timelines.
  • Created and maintained Linux knowledge base (KB) articles and Standard Operating Documentation (SODV) to support internal teams and end users.
  • Diagnosed and resolved Linux system performance issues and unplanned outages, applying best practices for root cause analysis and system recovery.
  • Scheduled regular system backups and investigated backup failures, leveraging tools and scripts to ensure data protection and restore capabilities.
  • Used rsync for data synchronization and efficient file transfer across multiple environments.
  • Built and deployed Linux servers in on-premises and Azure environments, adhering to security and compliance standards.
  • Configured Postfix mail servers and integrated with Gmail, Office 365, and SendGrid for outbound/inbound email handling; resolved a wide range of mail-related issues.
  • Supported ERP application setups and troubleshooting, ensuring uptime and optimal performance for critical business systems.
  • Set up and maintained Vsifax and FODC services on Linux to support enterprise fax solutions.
  • Managed logical volumes using LVM for dynamic disk provisioning and storage management.
  • Resolved FTP and SFTP connectivity, access, and automation issues, ensuring secure and reliable file exchange.
  • Created and maintained cron jobs to automate system tasks, backups, and application processes.
  • Configured label and laser printers on both Linux and Windows systems; provided Tier 2/3 support for printing issues.
  • Managed Red Hat subscription services, including system registration, entitlements, and compliance tracking.
  • Performed Linux user administration, access controls, and file permission management to ensure data security and operational integrity.
  • Supported Universe database environments, focusing on authorization configuration and version upgrades.
  • Collaborated with developers, infrastructure teams, and third-party vendors to troubleshoot and resolve complex issues across the application and OS layers.
  • As a senior team member, actively mentoring peers by providing hands-on training, guidance on best practices, and support during issue resolution and project implementation.
  • Provided 24/7 on-call support for critical production environments to avoid any business impact.
  • Currently undertaking AWS and Azure training to expand cloud expertise and enhance hybrid IT support capabilities.

Unix Admin

Wipro
10.2021 - 01.2024
  • Administered and maintained over 2000+ Linux and 2000+ Solaris servers across VMware, Dell, Cisco, IBM, and Oracle platforms in data centers located in North America and Europe.
  • Expertise in Red Hat Enterprise Linux (RHEL) versions 5, 6, 7, and 8, performing daily operational tasks, upgrades, and custom builds.
  • Managed system resources including CPU, memory, and storage using LVM, multipathing, and various SAN/NAS file systems on both physical and virtual servers.
  • Performed ZFS volume management tasks such as setting quotas, reservations, compression, and snapshots for data protection and efficient space utilization.
  • Handled SSL certificate renewals and ensured timely replacements to maintain secure communication across environments.
  • Performed Linux patch management, including pre/post patch checks and troubleshooting of any patch-related issues.
  • Built and deployed new Linux servers using PXE boot in both EPN and non-EPN environments.
  • Decommissioned obsolete Linux and Solaris systems, following proper change and configuration management processes.
  • Participated in Disaster Recovery (DR) drills, ensuring data synchronization and availability of production backups at the DR site.
  • Created and managed 20+ Ansible playbooks to automate system administration tasks, improving operational efficiency and reducing manual intervention.
  • Successfully created 1000+ Linux user accounts with varying sudo permissions across multiple servers using Ansible, ensuring compliance and access control.
  • Executed various tasks using Ansible ad-hoc commands, command-line automation, and looping constructs (e.g., for loops) for bulk operations.
  • Managed software/package installations using YUM and DNF; handled updates and dependency resolution.
  • Provided customer support through ServiceNow, resolving incidents and service requests within defined SLA timelines.
  • Collaborated with cross-functional teams including backup, storage, DNS, Splunk, Eracent, Oracle DB, and various application support teams.
  • Scheduled and maintained cron jobs per customer and application team requirements.
  • Remediated vulnerabilities including SWEET32, SSL v2/v3, NTPD, weak ciphers, cockpit disablement, and more.
  • Supported both Level 1 and Level 2 (L1/L2) operations for Linux and Solaris platforms, delivering robust and secure infrastructure management.

Education

Bachelor of Computer Applications -

Seshadripuram Degree College
Mysore, India
06.2018 - 09.2021

Skills

  • Linux server administration(RHEL 5, 6, 7, 8)

  • Solaris Server Administration

  • User Administration

  • LDAP

  • Ansible

  • LVM

  • ZFS

  • Backup & Restore

  • Rsync

  • Red Hat Subscription Management

  • Eclipse ERP Technical Support

  • Universe Database

  • Postfix

  • Vsifax and FODC Services

  • FTP/SFTP

  • Printers

  • Vulnerability Remediation

  • SSL Certificate

  • Yum / DNF

  • DNS

  • Customer Support (Tier 2/3)

Social Links

LinkedIn, https://www.linkedin.com/in/sahana-s0046b927a?utm_source=share&utm_campaign=share_via&utm_content=profile&utm_medium=android_app

Timeline

Technical Application Specialist

Epicor
01.2024 - Current

Unix Admin

Wipro
10.2021 - 01.2024

Bachelor of Computer Applications -

Seshadripuram Degree College
06.2018 - 09.2021

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