Eric O'callaghan
Application Development Operations Engineer
Philadelphia, Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolEric O'callaghan is an Application Development Operations Engineer based in Philadelphia with 13 years of hands-on experience designing and maintaining large-scale Linux infrastructure for enterprises and research institutions. He has operated and automated monitoring, alerting, and deployment systems—building Zabbix clusters, Ansible playbooks for nearly 1,000 servers, and integrations that surfaced alerts into Slack—while troubleshooting national-scale vCMTS and high-profile e-commerce environments. Comfortable across cloud and colo, Eric has managed VMware datastores, tuned kernel and network settings, and used tools like Splunk, New Relic, Grafana, and SolarWinds to drive root cause analysis and operational improvements. At Penn SEAS he now applies that operational rigor to support academic and research computing needs, bringing a practical security and reliability mindset from prior roles at Comcast, Sidecar, and hospitals. He pairs deep systems craft with a playful Philly-rooted personality—basketball and comedy fan—that shows up in collaborative, no-nonsense incident response. His open-source Zabbix-to-Slack alert script demonstrates a knack for shipping small, widely useful tooling that bridges internal ops and community users.
13 years of coding experience
9 years of employment as a software developer
Associate’s Degree, Networking Security & Management (A.A.S.), Associate’s Degree, Networking Security & Management (A.A.S.) at ECPI University
English, php, bash, linux, python, mysql
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (13)
alertdialog10
apim10
bash10
shell10
api10
alertview10
alerts10
curl10
slack10
zabbix10
webhooks10
regular-expression9
monitoring8
Programming languages (7)
Github contributions (5)
ericoc/zabbix-slack-alertscript
Dec 2013 - Oct 2019
Zabbix AlertScript for Slack.com chat
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 commits, 12 PRs, 38 pushes in 5 years 10 months
Contributions summary:Eric primarily focused on modifying a bash script for sending Zabbix alerts to Slack. Their contributions involved refining the script's logic to correctly format and send messages based on the Zabbix alert subject (PROBLEM, RECOVERY, or OK). They updated the Slack API usage, adjusted message formatting, and incorporated features for users in Slack channels and added a user agent to the curl command. Overall, the user demonstrated proficiency in scripting for integrating with external APIs.
alertpagerdutychatalertswebhook
ericoc/indegophp.ericoc.com
Jun 2018 - Dec 2022
indego.ericoc.com
Contributions:176 commits, 2 PRs, 11 pushes in 4 years 6 months
indego
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