Linux Systems Administrator Resume

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.