Open to opportunities

jason welsh

@jasonwelsh

Message

Experienced Linux Systems Administrator and DevSecOps Engineer with problem-solving skills.

United States

Message

What I'm looking for

I am looking for a challenging role that allows me to expand my skills and solve complex problems with technology.

I am a competent and experienced Systems Administrator and DevSecOps Engineer with over twenty years of hands-on experience in software installation, troubleshooting, and administration. My technical expertise lies in Unix systems, enterprise-level networking, and virtualization technologies, including VMware and Docker. I thrive on solving complex problems and sharing knowledge with my team.

Throughout my career, I have successfully supported AWS infrastructure, deployed services on RHEL servers, and contributed to various projects in classified environments. My certifications, including RHCE and Security+, reflect my commitment to maintaining high standards in system security and efficiency. I am passionate about leveraging technology to make a difference and am eager to expand my skills in a challenging role.

Experience

Work history, roles, and key accomplishments

Linux Computer System Engineer

Heptagon IT

Jan 2023 - Present (2 years 5 months)

Supported AWS infrastructure for the Nexgen project, performing weekly OS updates on RHEL7/8 servers and deploying new services. Troubleshot JAVA applications and space issues, and wrote custom scripts for automated password updates.

AWS Rhel 8 Java Scripting IBM Websphere Linux System Administration Troubleshooting

DevSecOps Engineer

BrainGu

Oct 2020 - Present (4 years 8 months)

Deployed infrastructure and code in classified environments for Project Volta at INSCOM. Utilized modern DevSecOps toolsets including Kubernetes, Docker, and Ansible, and configured systems in accordance with DoD STIGs.

Kubernetes Docker Helm Flux Kustomize AWS Ansible DevSecOps DOD STIG Infrastructure as Code

Senior System Administrator

Lulu Press

Nov 2017 - Present (7 years 7 months)

Maintained Apache Tomcat applications on virtualized RHEL servers and supported network/storage infrastructure including NETAPP, EMC, Juniper, and F5. Contributed to infrastructure tools via Git/GitLab and migrated the legacy platform to a Kubernetes cluster on GKE.

Apache Tomcat RHEL VMWare NetApp Juniper SRX Git Gitlab Kubernetes GKE Terraform Helm Ansible

Senior System Administrator

MercuryGate

Mar 2015 - Present (10 years 3 months)

Led the migration of Apache Tomcat applications from Windows to RHEL and CentOS servers on VMware. Maintained Linux server upgrades and patching using Spacewalk, and managed office networking equipment including ASA firewalls and Netgear switches.

Apache Tomcat RHEL CentOS VMWare Spacewalk Netgear Switches BASH Python Nginx

DevOps Engineer

Live Gamer

Oct 2013 - Present (11 years 8 months)

Deployed and maintained redundant high-performance JBOSS applications on Linux Xen hypervisors. Maintained Cisco ASA firewalls and VPNs, and configured Brocade and Coyote Point load balancers.

JBoss Xen Cisco ASA VPN Brocade Coyote Point Load Balancers

Senior System Administrator GGSG

Cisco Systems

Dec 2011 - Present (13 years 6 months)

Deployed Apache Tomcat web applications and maintained RedHat Linux server 6.x infrastructure on Cisco UCS platforms for government IT support. Migrated services from Solaris to Cisco UCS and created custom RPMs for Spacewalk server.

Apache Tomcat RedHat Cisco UCS)rpm Spacewalk Oracle MySQL Gerrit Git Jenkins

System Administrator TACSUNS Team

Cisco Systems

Jan 2003 - Present (22 years 5 months)

Administered servers and workstations for TAC users worldwide, troubleshooting mail and system issues. Installed and maintained software packages on Solaris and Redhat Linux, and set up a Cisco UCS B series server farm.

RedHat Cisco UCS)Nexsan SATABEAST EMC DMX EMC CX300 Apache BASH Perl CRM114

TAC Engineer

Cisco Systems

Apr 2002 - Present (23 years 2 months)

Supported Cisco's enterprise line of layer2/layer3 Catalyst switches, troubleshooting LAN technologies such as VLANs, multicast, Spanning Tree, and VTP. Assisted customers with configuration and troubleshooting of various LAN issues.

VLAN Spanning Tree Fast Etherchannel Cisco Catalyst

Systems Engineer/Team Lead

Cisco Systems

Aug 1999 - Present (25 years 10 months)

Supported Cisco's security products including Pix firewall, Cisco Secure IDS, Cisco Secure ACS, and Cisco IOS firewall as a back-line TAC engineer. Managed a Linux SMTP/HTTP server and Solaris servers in the lab, and acted as training coordinator.

Pix Firewall Cisco Secure IDS Cisco IOS Firewall SSH IPSEC VPN 3000 Python CGI Training Coordinator

Systems Administrator

Quintiles Transnational

Jul 1998 - Present (26 years 11 months)

Served as a systems administrator for a Microsoft NT network, supporting ten NT servers and twenty NT workstations. Performed new server/workstation installs, maintained daily backups, and managed Internet connectivity and Checkpoint Firewall-One.

Microsoft NT Checkpoint Firewall DNS SMTP Linux Network Administration Backup

Router Activation Engineer

MCI

Oct 1997 - Present (27 years 8 months)

Worked with MCI account teams and customers to connect them to the Internet via static routes and BGP. Activated and troubleshot new and upgraded circuits using various networking equipment.

BGP Static Routing Circuit Activation Troubleshooting 3Com Routers CSU DSU

Systems Engineer

Ikon Office Solutions

Mar 1993 - Present (32 years 3 months)

Installed new Novell Networks, expanded and troubleshot existing LANs and WANs, and provided 24/7 support for hospital networks. Documented customer configurations and performed LAN administrator duties for clients.

SERVER TESTING Novell Networks Troubleshooting Workstation Assembly Server Testing

Computer Assistant

Martin Color-FI

Jun 1992 - Present (33 years)

Assisted users with PC questions and created Excel spreadsheets to automate weekly reports. Also helped install fiber optic cable to a remote workstation.

Excel Automation

Computer Assistant II

Clemson University

Jan 1990 - Present (35 years 5 months)

Supervised PC and Macintosh computer labs, assisting students with Microsoft Office, Macintosh word processing, and graphics applications. Maintained printers and computers for student use.

Microsoft Office Printer Maintenance