Puppet Management: Utilized Puppet (v4 & v6) for system changes across infrastructure across a 500+server infrastructureScripting and Automation: Developed Bash scripts for log monitoring, application debugging, andautomated server updates, cutting troubleshooting time by 30%.Patch Management: Rewrote and optimized Bash/Python patch scripts for Linux systems, resulting in areduction in patching time.Patching: Led and participated in multiple simultaneous projects, contributing to system upgrades,deployments, and optimizations for retail stores. Ansible Playbooks: Created Ansible playbooks to automate the setup of VMs, web servers, file servers,and application servers, reducing time spent on manual provisioning.Documentation and Training: Authored technical documentation and led training sessions for teammembers to enhance knowledge sharingCommunication: Utilized tools like MatterMost, Jira, and Confluence for team collaboration andproductivity enhancement.

Backup: Developed Ansible playbooks for automated backup jobs, reducing backup time by 50% andensuring zero data loss in case of system failures.Disaster Recovery: Configured and documented a disaster recovery plan for Mysql and CassandradatabasesDatabase: Set up a multi-master cluster using Percona for improved database performance andredundancyPython Automation: Rewrote patch management Bash/Python scripts to improve Linux systemstability, and to enhance the efficiency of Linux system updates.Security Monitoring: Utilized Observium and ElasticSearch to monitor server metrics and trace securitythreats, preventing potential breaches.CI/CD Pipeline Development: Designed and implemented a CI/CD pipeline using Docker, Vagrant, andGitLab improving deployment speed and accuracy.Virtualization: Managed Virtual Machines using Ovirt and KVM, ensuring efficient resource allocationand scalability.DNS: Managed DNS records using Amazon Route 53, ensuring proper routing and domain managementfor multiple environments.

System Administration: Managed and maintained over 200 Linux servers, ensuring high uptime andstability for enterprise-level applications such as WebSphere.Automation: Developed Bash and PowerShell scripts to automate routine tasks, reducing manual laborand minimizing errors.Security Compliance: Conducted regular system audits using Retina and Tenable,to identify andremediate vulnerabilities.Vendor Coordination: Collaborated with software vendors to troubleshoot and configure softwaresolutions.Build: Developed a standard Linux host build process, ensuring consistency and reducingconfiguration errorsJava: Supported Java applications hosted on WebSphere Application Server, diagnosing and resolvingcomplex system issues.Administrative: Analyze company business needs and research suitable technologies to keepinfrastructure updated.

Infrastructure Management: Led sysadmin functions, including patch management, OS hardening,and routine maintenance across 250+ Linux servers.Automation: Created Python and Bash scripts to automate system tasks, improving overall efficiency.Configuration Management: Used Ansible to streamlined server provisioning and configuration invCenter ensuring consistency across environments.Code Review and Collaboration: Collaborated with other DevOps engineers for code reviews to refineAnsible playbooks, Bash, and Python scripts improving code quality.CI/CD: Utilized Jenkins to automate code deployment across the infrastructure, streamlining thesoftware delivery process.

Container Security: Assisted customers in securing container environments using Qualys ContainerSecurity, ensuring compliance with security policies.Container Support: Provided native container support through the use of the Container Sensor tool,distributed as a Docker image.Cloud Integration: Helped clients integrate AWS, Azure, Docker, and Google Cloud containers intoQualys tools, improving management processes.Monitoring and Error Resolution: Used Splunk and ELK Stack to monitor and resolve backend errorsfor AWS and Azure connectors within the Qualys CloudView and Vulnerability Management apps.AWS: Guided customers in configuring AWS environments, setting proper user roles, IAM policies, andcreating CloudFormation templates.

Vulnerability Management: Provided support for web application vulnerability scanning, mitigatingweb application vulnerabilities and helping clients to secure their systems.Automation: Developed Selenium scripts to automate authenticated web application scans, reducingmanual intervention in vulnerability assessments.Security Tools: Utilized Burp Suite and Web Analyzer to conduct penetration tests and vulnerabilityassessments on client systems, identifying vulnerabilities in client applications.Support: Supported customers using Qualys security tools to continuously discover and secure globalIT assets.Documentation: Created support documentation for web application scanning, ensuring that futuresupport teams could quickly assess customer environments.

Administration: Administered 300 Linux and Windows servers, ensuring the stable operation ofcomputer hardware, software, and network infrastructure.System Maintenance: Developed Bash scripts for automating system tasks, improving systemperformance and reducing manual work.Puppet Management: Installed and configured Puppet. Wrote custom modules and manifests toautomate server management tasks.Linux Kickstart: Implemented Linux Kickstart configurations to standardize installations and reduceerrors during the setup process.Documentation: Wrote documentation and trained new users on new applications.System Improvements: Recommended and implemented system improvements that enhanced securityand reduced operational costs

Active Directory & DNS: Set up and managed Active Directory and DNS on Windows Server 2003,supporting over 100 users.Servers: Set up Apache, MySQL, and Samba servers, improving network,database and file securityperformances.Server Management: Set up virtual machines using KVM on Linux servers, improving system scalabilityand resource management.Monitoring: Setup up Hyperic and Spacewalk to monitor our servers and virtual machines while alsoapplying patch management to them.Patching: Managed system patches and updates for Red Hat Enterprise Linux, ensuring systemcompliance and security.

Customer Support: Diagnosed and resolved hardware and software issues for individuals andbusinesses.Data Backup: Implemented data backup solutions using Acronis and Windows Ghost, ensuring theintegrity of client data.

Cloud: Managed cloud space for corporate systems.Symantec Security: Deployed and configured Symantec Client Security, enhancing endpointprotection.Desktop Support: Installed and supported corporate systems, resolving technical issues for users.Set up network devices such as PCs, laptops, phones, and printers. Operating System: Install Windows 7, Windows XP and Free BSD Documentation: Documented any troubleshooting issues in the Trac ticketing system so that future workers will have a how to guide to follow when troubleshooting computers for the company.

Ticketing: Used osTicket to track and solve any customer tickets involving computer hardware, software or networking issues.Troubleshooting and Repair: Diagnosed and repaired PCs, ensuring quick resolution for client issues.Network Setup: Configured home and office networks, improving connectivity and security.