Warren Brennan Email & Phone Number

• Participated in building and maintenance of a resilient, secure, and efficient SaaS application platform in AWS.• Configured and maintained a comprehensive monitoring solution utilizing PRTG, CloudWatch, and VictorOPS.• Designed and implemented a patching solution, for both Windows and Linux servers, using AWS System Manager.

Toronto, Canada Area

• Ensured the stability, integrity and efficient operation of the production infrastructure, including on-premise and in the cloud. • Designed and architected appliance-based products, providing robust, flexible and scalable systems.• Worked closely with external customers to deploy, configure and troubleshoot company products.

Markham, On / Remote

• Installed, configured, and administered Solaris and Linux servers in 24x7 mission-critical production environment.• Worked closely with architecture and development teams, including 3rd party vendors, building, testing, and implementing application environments.• Designed, wrote, and tested UNIX shell scripts, proactively monitoring production applications.• Performed OS upgrades, kernel patching, and firmware upgrades on Solaris and Linux servers, proactively increasing server stability and enhanced functionality.• Provided troubleshooting of system issues, including hardware and software, and opened support cases when needed, minimizing business impact.• Investigated performance problems and resolved issue or made hardware upgrade recommendations to management, ensuring applications were running optimally.• Assisted and mentored junior team members and arranged knowledge transfer to help perform role, allowing focus to be on more complex tasks.• Played key role in testing and deploying new billing platform that greatly enhanced accuracy, efficiency, and redundancy.• Developed platform to securely exchange important, confidential data with 3rd party companies, ensuring all parties involved had correct, current data.