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Work Background
Principal Security Engineer
InforPrincipal Security Engineer
Dec. 2017Responsible for building multiple security audit tools. Built automation for auditing security tools on 55,000+ Ec2 instances in over 6,000+ AWS accounts. Created EventBridge automation monitoring AWS security groups and external exposure. Automated public IP Address port scans with Python and Runzero. Collaborated with Site Reliability Engineers and Architects to create security policies. Assist incident response and vulnerability management teams. Created SIEM alerts for tier I SOC team. Automated security reports for monthly security reviews. Built asset CMDB for internal security team. * Built quarantine automation for Ec2 instances out of compliance. * Built quarantine event-based automation for newly launched Ec2 instances with externally exposed ports. * Automated network scans for all public IP addresses. * Automated AWS inventory scans of services for CMDB. * Authored documentation for automation. * Provided reports for vulnerability management teams.
Principal DevOps Engineer
AutodeskPrincipal DevOps Engineer
Jun. 2014 - Dec. 2017DevOps Engineer on the IaaS team building infrastructure and tools for multiple Site Reliability Engineer teams. Deployed a Jfrog Artifactory repository cluster for the Jenkins CI/CD pipeline. Built out HashiCorp Vault clusters with HashiCorp Consul for application and database credential management. Began training and transition to security DevOps role.
Senior Systems Engineer, System Specialist III, Managed Services Infrastructure Lead
EricssonSenior Systems Engineer, System Specialist III, Managed Services Infrastructure Lead
Apr. 2013 - Jun. 2014Senior Systems Engineer, System Specialist III, Managed Services Infrastructure Lead Lead Engineer supporting Cricket Communications operations and new T-Mobile billing initiative. IT Server Engineering (ITSE) Cricket team lead responsible for ten employees covering the Windows, SAN, backup and VMWare environments. Manage contractors and delegate workloads across a global team. 24/7 operational support. Work closely with the Network Engineering, Security Compliance and Application teams. Design and implemented a new data warehouse solution for legacy Cricket for AT&T transition. Building highly available VERITAS clusters with replication per Ericsson Solution Architect requirements. Early life support for new Ericsson T-Mobile billing solution. Designing and implementing tools platform for Ericsson Managed Services.
Sr. Systems Engineer
Cricket CommunicationsSr. Systems Engineer
Sep. 2008 - Apr. 2013Greenwood Village, ColoradoOne of two Engineers supporting over 1400 Solaris and Red Hat UNIX systems. Assist in managing and negotiating license agreements for Symantec, Oracle and Red Hat. Lead engineer in production billing migration of a 25TB database. Built numerous Veritas RAC clusters to support Cricket’s back office infrastructure. Consolidated multiple environments into Solaris zones for QA, build, and user acceptance testing. Built syslog-ng server for centralized logging of SOX in-scope servers. Performed system and network transfer testing for new billing system. Implemented UNIX Uptime monitoring system. Automated system alerts for tier 1 support team. Lead engineer for new Billing shadow facility roll-out. Lead engineer for database virtualization software and automation. Lead engineer on data center migration from San Diego to Denver. Continually automate processes with Shell and Perl scripts. Oversee the Denver data center. Always exceed or meet critical deadlines. Participate in a 24/7 on call rotation. Negotiate with vendors for better pricing on hardware. • Part of a two man team responsible for over 1300 UNIX systems. • Reduced downtime for system patching using Solaris Live Upgrade. • Implemented virtual database software reducing Cricket’s storage footprint. • Automation for quick system and virtual database deployment. • Authored environment and build documentation. • Built and support a number of systems for multi-million dollar billing initiative. • Performed Oracle CRS upgrades under tight deadlines. • Migrated systems from UFS to ZFS and VXFS to ZFS. • Racked and cabled all servers in the Denver datacenter. • Built Apache web server for scripts, tools, and Solaris wanboot.
Infrastructure Engineer Senior
Level 3 CommunicationsInfrastructure Engineer Senior
Oct. 2004 - Sep. 2008Broomfield, ColoradoBuilt new email infrastructure utilizing MessageLabs virus and spam filtering. Consolidated UNIX email relays from eight to three. Maintain UNIX systems internal email. Assist in email migrations when pertaining to UNIX systems. Lead Engineer for HP Server Automation roll-out. Built new HP Server Automation wanboot system for UNIX OS provisioning. Engineering tools for package deployment through HP Server Automation. Engineering tools for virtual Solaris zones through HP Server Automation. Build and deploy development, test and production UNIX servers. 24x7 production support. Provide system and engineer support for QA and development labs. Engineered new development lab consisting of more than 30 servers. System and call flow troubleshooting with SIP and MGCP protocols on a Voice Over IP network (VOIP). Maintain servers, upgrade, patches, and security. Solaris 10 prototype for Level 3 proprietary software applications. Bench-marked Sun Netra T2000 hardware for DNS caching servers running Bind 9. • Evaluated multiple third party software applications for the IT organization. • Implemented remote administration. • Authored lab environment build documentation. • Configured network switches and terminal servers. • Installed and configured third party VOIP software. • Built Apache web servers for user and administration software portals. • Built Solaris 10 prototype server for application testing virtual interfaces and zones. • Automation for Solaris 10 zone builds.
Senior VOIP UNIX Systems Engineer
Global CrossingSenior VOIP UNIX Systems Engineer
Aug. 2000 - Aug. 2004Denver, ColoradoProvide system support for over 200 UNIX servers on a global scale, conducting initial builds, deployment, troubleshooting and monitoring. Maintain server uptime and track failures, upgrading software, patches, and firmware. Act as technical lead in the augmentation of NFS servers, handling scheduling, resource procurement, and installation. Software and OS system security, and firewall administration. • Created remote procedure for independent upgrade from Solaris 2.6 to 2.8, resulting in decreased shipping and labor costs. • Firewall administration using both Checkpoint Firewall-1 on Solaris and IP Tables on Debian Linux. • Authored documentation and method of procedures for system change maintenance. • Liaised with switch technicians to troubleshoot and resolve site problems. • Coordinated solutions for escalated system problems with technical support. • Built images and operating systems for the testing group. • Reconfigured network monitoring application to notify via page regarding server problems. • Initiated jump-start server to add new machines more efficiently. • Demonstrated reliability and ability to learn quickly in rapid growth from PC technician responsibilities to senior level UNIX administration.
Application Support Technician
Sienna ImagingApplication Support Technician
Jan. 1998 - Dec. 2000Greater Denver AreaInstalled software and trained customers internationally for this digital printing company, supporting applications and operating systems for 150 customers. • Constructed small networks using TCP/IP and Dave software. • Resolved problems quickly and efficiently to maintain positive client relationships. • Worked closely with engineering testing newly developed software.

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