Lewis & Clark College

Bradley University

Southern Illinois University at

Linux Systems Administrator

Linux Engineer/Team Lead   (Project Lead)
Linux production environment Consolidation & Migration to a unified distribution and standardization of security and applications across the entire organization. 

•	Transformed and streamlined an outdated infrastructure comprising unsupported CentOS, Debian, and Oracle Linux environments, consisting of 75 mixed virtual and physical servers onto a more secure Red Hat 8.8 environment with 30 servers, centrally managed using Red Hat Satellite 6.14. 
•	Established and trained a proficient Linux administration team to ensure the ongoing maintenance of the environment.
•	Facilitated the integration of essential tools such as Splunk, Rapid7, Zabbix, and other proprietary software to enhance system functionality and security measures.
•	Recruited, trained, and led a skilled Linux administration team to ensure the ongoing maintenance and optimization of the environment.
•	Procured, installed & configured critical software packages including Splunk, Rapid7, Zabbix, and other proprietary solutions.
•	Coordinated with multiple vendors for application testing, support, and strategic planning for future projects.
•	Implemented a functional disaster recovery plan by redesigning and consolidating disparate network file systems, monitoring and backup solutions.
•	Established a single, secure NFS system to enhance data management and security.

San Antonio Water Services

Linux Engineer/Team Lead

•	Led the formation of a new DevOps team, serving as the primary expert on DevOps processes and best practices.
•	Authored comprehensive runbooks to streamline incident response and operational tasks.
•	Mentored new engineers, providing guidance and support to ensure successful onboarding and skill development.
•	Designed and implemented operations procedures for the efficient support of new applications.
•	Developed and maintained dashboards to monitor application performance and system health.
•	Participated in the hiring process by evaluating and deciding on new candidates.
•	Conducted thorough bug testing of software solutions, leveraging Jenkins, Ansible as the CI/CD tool to automate and optimize the testing pipeline.
•	Utilized Python and Bash scripting for automation, configuration management, and process improvement.
•	Implemented Scrum methodology to manage projects, ensuring efficient and collaborative team sprints.

7-Eleven

Senior Site Reliability Engineer Operations Supervisor

Senior Site Reliability Engineer adept in system management, DevOps collaboration, documentation, mentorship, troubleshooting, containerization, and cloud deployment with expertise in Redhat, Ubuntu, CentOS, Windows systems, and Puppet & Ansible CI/CD tools.

•	System Management: Install, configure, and troubleshoot Redhat, Ubuntu, CentOS, and Windows 10/11 systems in cloud, VMware, and datacenter environments.
•	DevOps Collaboration: Manage application deployments, configurations, and patch management as part of the DevOps team using Puppet & Ansible as primary CI/CD tools.
•	Documentation: Author and maintain technical procedure documents, ensuring clarity and usability.
•	Support and Mentorship: Act as a point of escalation for complex issues, providing guidance, training, and mentoring to other administrators and non-technical staff.
•	Troubleshooting: Conduct extensive Tier 2/3 application, network, and environment troubleshooting.
•	Containerization: Handle daily container deployments and orchestration, with expertise in service discovery, deployments, monitoring, scheduling, and load balancing.
•	Cloud Experience: Develop and deploy applications in hosted cloud environments, primarily AWS and GCP.

Bank of America

Senior Site Reliability Engineer

DevOps Engineer with expertise in system management, automation, cloud deployment, and advanced troubleshooting.

•	System Management: Linux (RedHat 6 & 7, CentOS, Ubuntu 16.04 - 18.04, AIX) shell scripting, system installation, configuration, and troubleshooting in a cloud environment.
•	Configuration Management: Configure Puppet and Chef for environment configuration and management on Linux/Windows systems.
•	CI/CD: Utilize Jenkins for continuous integration and continuous deployment (CI/CD) to automate testing and code deployment processes.
•	Patch Management: Employ Redhat Satellite for efficient patch management and system updates.
•	Containerization and Orchestration: Daily work with Docker and Kubernetes for container deployments and orchestration, including service discovery, deployments, monitoring, scheduling, and load balancing.
•	Cloud Experience: Develop and deploy applications in hosted cloud environments, primarily AWS and GCP.
•	Troubleshooting: Conduct extensive Tier 2/3 application, network, and environment troubleshooting.
•	DevOps Practices: Regularly test and evaluate code upgrades, providing solutions and improvements as part of the DevOps group.

Splunk

Site Reliability Engineer

Linux System Administrator
•	Spearheaded a comprehensive initiative to update and consolidate the entire Linux environment onto a standardized distro, ensuring uniformity and efficiency across the infrastructure.
•	Implemented rigorous security measures to fortify the Linux environment, safeguarding sensitive data and mitigating potential vulnerabilities.
•	Integrated the Linux environment with Oracle Cloud and multiple Oracle databases, orchestrating seamless communication and data synchronization between systems.
•	Managed Oracle databases, including backups, disk management, and troubleshooting, ensuring optimal performance and data integrity.
•	Utilized Puppet for environment configuration and management on both Linux and Windows systems, streamlining administrative tasks and enhancing system reliability.
•	Conducted system monitoring, analysis, and performance tuning to maintain peak performance levels in a 24/7 production environment, while proficiently troubleshooting hardware, software, networks, and system management systems.
•	Led the evaluation and documentation of third-party software for functionality before widespread implementation, ensuring compatibility and efficiency within the environment.
•	Successfully executed a Red Hat system consolidation and update from version 6 and 7 to version 8, optimizing system capabilities and ensuring adherence to the latest standards and features.

Nucor Corporation

Linux Systems Engineer

Application Support Engineer with proficiency in system integration, troubleshooting, DevOps collaboration, support and mentorship, customer issue management, virtualization, cloud deployment, configuration management, and CI/CD automation, specializing in TrendMicro applications and technologies such as Remedy, Puppet, and Jenkins.
•	System Integration: Installed and integrated TrendMicro applications with Windows/Linux systems in AWS and CentOS environments, performing remote installations as needed.
•	Troubleshooting: Conducted extensive Tier 2/3 application, network, and environment troubleshooting, including resolving application issues related to antivirus software.
•	DevOps Collaboration: Worked within the DevOps group to perform regular testing and evaluation of code upgrades, contributing solutions and improvements.
•	Customer Issue Management: Managed customer issues and requests using the Remedy ticketing system, ensuring timely resolution and effective communication.
•	Virtualization: Troubleshoot and implemented VMware environments for remote clients.
•	Cloud Experience: Developed and deployed applications in Azure cloud environments.
•	Configuration Management: Utilized Puppet for environment configuration and management.
•	CI/CD Automation: Employed Jenkins for continuous integration and continuous deployment (CI/CD) to automate testing and deployment processes.

Trend Micro

Senior Application Support Engineer

Linux Administration: Proficient in CentOS & RedHat system installation, configuration, and troubleshooting, ensuring robust system operations.

•	Application Deployment & Integration: Successfully installed and integrated Brainspace applications within Redhat & CentOS Linux systems, ensuring seamless operation.
•	Big Data Analytics: Designed and implemented virtual environments on Amazon EC2 & Azure cloud platforms for unstructured data analytics and machine learning solutions, leveraging Brainspace and Relativity technologies.
•	Technical Documentation: Authored and maintained comprehensive technical procedure documents, reflecting a commitment to clear communication and strong customer service.
•	Customer Training: Provided personalized and group training sessions on the usage, development, and administration of Brainspace applications running on Tomcat servers, enhancing user proficiency and system efficiency.
•	DevOps Collaboration: Contributed to the DevOps group by actively participating in regular testing and evaluation of code upgrades, offering valuable solutions and enhancements.
•	Software Development: Utilized Chef and Docker for software development and deployment, ensuring streamlined processes and optimal system performance.

Brainspace Corporation

Linux Engineer & Application Support 

Linux/Unix System Engineer

•	Managed the infrastructure and e-commerce platforms, ensuring seamless day-to-day operations, including the deployment of new hardware/software configurations, and on-site management of equipment in our co-location facility.
•	Ensured system performance through diligent system monitoring, analysis, and performance tuning in a 24/7 production environment, troubleshooting system hardware, software, networks, and operating and system management systems.
•	Installed Operating Systems, applications, and patches on virtual and physical servers, meticulously tuning systems to meet performance expectations.
•	Authored multiple technical procedure documents, reflecting a commitment to clear communication and strong customer service.
•	Demonstrated proficiency in command-line interfaces for troubleshooting, diagnosing problems, and executing general systems operations.
•	Scheduled, executed, and verified maintenance outages and backups to maintain system integrity and reliability.
•	Designed user account administration procedures on multiple platforms, encompassing both MS (Active Directory) and UNIX/Linux (LDAP) environments.
•	Exhibited expertise in load balancing methodologies, LDAP administration and maintenance, NAS/SAN storage, load testing, Tomcat performance tuning, server hardware, physical management of rack-mounted equipment, and BASH scripting.
•	Participated in an on-call rotation with other team members to provide 24/7 production systems support, ensuring continuous system availability and reliability.

Speedcommerce

Linux/Unix Administrator II

Linux and Package Management Administrator

System Performance Management: Maintained optimal system performance through diligent monitoring, analysis, and performance tuning in a 24/7 production environment. Troubleshot issues related to system hardware, software, networks, and operating systems.
Workstation Migration: Designed and implemented the migration of workstations to SUSE and RedHat distributions, ensuring smooth transitions and minimal disruption to operations.
Load and Stress Testing: Designed and conducted system load and stress testing, identifying and escalating application problems to vendors for resolution.
Capacity and Performance Monitoring: Monitored system capacity and performance, including memory consumption, input/output response time, read/write access time, and CPU utilization, making necessary adjustments to meet performance requirements.
Problem Reporting and Resource Planning: Reported current and potential problem areas, identifying necessary hardware resources to support increasing workloads and ensuring system scalability.
Backup and Recovery: Developed and maintained detailed backup and recovery strategies for multiple systems, including databases and file servers, ensuring data integrity and availability.
Command-line Proficiency: Demonstrated high proficiency with command-line interfaces for troubleshooting, diagnosing problems, and performing general systems operations.
Support and Mentorship: Acted as a point of escalation for complex issues, providing guidance, training, and mentoring to other administrators and non-technical employees, fostering a collaborative and knowledgeable team environment.

Texas Instruments

L2 Unix Administrator

Responsible for user account administration (Add/Delete/Update) on multiple platforms both MS (Active Directory) and Unix.
Responsible for resolving a wide variety of complex system failures, troubleshooting software, hardware, and network problems, and monitoring and addressing Service Center trouble tickets as required
Managed all workstation's for testing facilities (builds, backups, software installs &amp; system configuration)
Responsible for performing and restoring record/system backups with Veritas Netbackup 6.0.
Primary Administrator for Access Control and Intrusion detection for the departments managed systems.
Responsible for creating &amp; adapting existing documentation and generating new processes and procedure manuals for all existing and newly developed applications.   
Technical environment: Remedy 7.0, Windows 2000/NT/XP, Active Directory, Unix (HP, Solaris

Southwest Airlines

Security & Licensing Administrator

Provide technical support services to internal customers with responsibility for diagnosing and resolving complex problems related to various applications, operating systems and equipment.
Responsible for system status monitoring, performance analysis, disaster recovery planning and exercise as well as software installation and configuration &amp; new technology research and testing.
Remote administration and configuration of multiple workstations as well as network servers for windows 2000 &amp; upgrades to 2003.
Participated in security transitioning a global operations center to new international location.
Performed basic administration and Configuration duties for Exchange 5.5 mail system.
Technical environment: AIX-Unix, AS/400, NT 4.0/XP, and VMS, Remedy Ticketing System.

Charles Daniels