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Linux Systems Administrator Resume

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SUMMARY

  • Innovative IT professional offering 5 years of progressive experience centered on administering Linux systems in the Cloud. Passionate about building tools and automation to make infrastructure more robust. Enjoys learning and acquiring knowledge - quickly and independently. A skilled communicator and technology enthusiast who seeks collaboration.

PROFESSIONAL EXPERIENCE

Confidential

Linux Systems Administrator

Responsibilities:

  • Migrated application platform from Rackspace + Digital Ocean to on-prem private cloud following company acquisition. Created S2S IPSEC VPNs between cloud VMs and Checkpoint firewall to facilitate secure data transfer.
  • Plug security vulnerabilities and engineer plans to upgrade legacy applications and OS distribution versions.
  • Automate repeatable tasks using Ansible playbooks and custom scripts (Python, Bash, Powershell)
  • Deployed Splunk for centralized log aggregation and SolarWinds for systems and application monitoring. Setup SolarWinds integration with PagerDuty, rotating on-call schedules, and escalation policies.
  • Perform primary/secondary on-call duties to manage alerts on PagerDuty and solve issues after-hours.
  • Plan, schedule, test and perform software installation/updates, and code changes using change management process.
  • Build, administer, and troubleshoot all Linux machines in mission critical environments (Production, Demo, Stage, Performance, QA/Test, Development/Integration)
  • Launched a “lunch ‘n learn” initiative, where personal knowledge was shared across different teams.
  • Proposed creation of internal wiki knowledge-base and using a centralized git server for source code.

Confidential

Operations Systems Analyst

Responsibilities:

  • Setup, configured, and managed over a dozen distributed Splunk deployments that monitored over 5,000 servers.
  • Wrote custom scripts to aggregate and monitor server/application metrics. Provided insight to improve availability, reliability, performance and manageability of WFS real-time trading systems and services. (Python, Bash)

Systems Administrator

Confidential

Responsibilities:

  • Deployed, configured, and managed monitoring infrastructure to provide better insight into server and application metrics, shorten lead between fixes, and reduce mean time to repair in event of failures. (Icinga2: a Nagios fork)
  • Utilized configuration management to practice DevOps’ “infrastructure as code” philosophy, which allowed for quick, self-documented, repeatable systems comprised from modular components. (SaltStack, Salt Cloud, Git)
  • Wrote and refactored scripts; reducing runtime of internal script from 6 hours to 3 minutes. (Bash, Python, PHP)
  • Completed last stages of migrating company’s systems from MSP to hybrid cloud on AWS (Amazon Web Services).
  • Deployed and managed RDBMS servers for use in various analytics projects, incorporating automated updates from vendor-supplied data. (Percona Server: a MySQL fork, MySQL on Amazon RDS, and Microsoft SQL Server)
  • Tested, documented, and optimized disaster recovery processes, which were frequently used to recover data in event of user error.

Confidential

Data Center Engineer

Responsibilities:

  • Reduced time spent on cable-run mapping by 75% with Bash shell script.
  • Led RFID project implementation to track materialized data center assets during entire 3-5 year hardware lifecycle.
  • Created new standard procedures and improved existing SOPs to increase consistency and organization.
  • Audited data center whitespace to maintain integrity of asset management databases and network diagrams.
  • Performed Red Hat Enterprise Linux and IBM AIX Unix base operating system installation, Layer 2 server and switchport configuration. Troubleshot and resolved network connectivity issues to maintain system uptime.
  • Used proprietary Confidential Terminal as ticketing system in conjunction with in-house software to monitor, report, and track operational issues. Documented troubleshooting efforts and solutions.

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