SUMMARY:

• Insightful, results - driven Linux Systems/DevOps Engineer with over 9 years of experience in a wide variety of Linux platforms to support and provide IT services both as a Federal Government contractor and in the private sector.
• Strong communication abilities with a history of providing both on-prem and off site support to a wide variety of clients.
• Strong technical knowledge of current emerging technologies.
• Experience with deadline oriented and fast paced environments. Detailed technical knowledge and hands-on experience of DevOps, Automation, Build Engineering and Configuration Management

TECHNICAL SKILLS:

• Red Hat Enterprise Linux (5,6 &7) x86/x64
• CentOS (5,6&7) x86/x64
• Virtualization (VMware/ESXI 5.1.6;Rhev & KVM)
• Web & Middle Services (Apache,PHP,Tomcat,JBoss,WordPress,Drupel)
• Database (MySQL, Oracle, PostgreSQL,MarianDB)
• Scripting (Bash, Shell,Git,Sed,Awk,SVN)
• Network Services (NFS,IPV4,SSH,DHCP,TCP/IP)
• Security (SeLinux, Iptables,FirewallD)
• Risk Assessment / Impact Analysis
• Change Management (ITSM,Remedy)
• Redhat Satelite
• New Relic
• Splunk
• Git
• Jira/Confluence

PROFESSIONAL EXPERIENCE:

Confidential, Bethesda, MD/Washington, DC

Sr. Linux Systems /DevOps Engineer

Responsibilities:

• Maintenance of all patches, updates, and deployment scripts
• Performance of routine operational functions as specified in SOAM or SOP’s
• Performance of maintenance in regularly scheduled monthly maintenance window.
• Product installation and maintenance (e.g., monitoring applications and/or agents
• Determine cause of problems - functionality and performance, provide after action reports with root cause analysis.
• Identify corrective actions.
• Coordinate solution implementation.
• Provide end-to-end support for Build and Deploy activities.
• Provide end-to-end support for Production and Alternate Production Deploy activities.
• Provide support for CCRM development.
• Perform implementation of database schema, configurations.
• Implement scripts to support database creations and other required activities.
• Maintain scripts to automate common operations & maintenance tasks where feasible

Sr. Linux Systems /DevOps Engineer

Responsibilities:

• Implementation, management, security and administration of a new Dev environment on RedHat 7 (Rhel7) including Filesystem management, Apache, Firewalld and service configuration.
• Application and Web system administration including deployments, troubleshooting, configuration and tuning
• Part of a small team maintaining over 250 Linux (Rhel 5 & 6; CentOS 5 & 6) in Dev,QA(Testing) and Production environments.
• Manage existing puppet environment in Dev,QA(Testing) and Production
• Deploy 7 ColdFusion applications (Instances) within puppet on production.
• Deployed jboss, tomcat, PHP and apache stacks using puppet in Dev,QA(Testing) and production.
• Perform monthly patching of Dev, QA(Testing) and Production of Linux servers and work station
• Perform weekly code and application deployment in Dev, Q(Testing) and Production manually or automated.
• Troubleshoot and fix server, application and user issues/errors.
• Create and troubleshoot Openssl issues
• Build new Linux Dev environment on Rhel 7
• Installed and configured Cobbler, used cobbler to provision servers via kickstart and PXE-boot

Systems Engineer / DevOps

Responsibilities:

• Part of a small team maintaining over 400 Linux (Rhel 5 & 6; CentOS 5 & 6)
• Built, configured and deployed CentOS and RedHat virtual servers in VMware vCenter environment.
• Built, configured and deployed Puppet to manage all existing servers.
• Automated the built of new servers and OS deployment using puppet. Implemented Tivoli agent on all servers using puppet.
• Extended Puppet for non-standard functions using custom facts, parser functions and providers.
• Responsible for upgrades, configuration and deployment of Apache, httpd, PostgreSQL and several other software packages. Part of 24 hours on call rotation.
• Experience with configuring Kickstart servers to initiate installation of Red hat Linux and CentOS on several machines at once.
• Experience with Red Hat patch management
• Experience with using Satellite Server and Manual patching experience

Linux Systems Administrator, Sr

Responsibilities:

• Built and configured virtual machines, ESXi; used VMware/VSphere 5.1/5.5 to monitor servers, web applications.
• Used Puppet for automation and scheduling automated jobs.
• Partnered with platform data and app teams to ensure architecture and infrastructure meet business requirements.
• Experience with leading team in Agile/Scrum environment.
• Managed Swap Space, Disk utilization and CPU utilization.
• Provided administrative and technical support to critical application servers, which include: troubleshooting, performance tuning and monitoring production servers with tools like Nagios, New Relic and Linux commands.
• Implemented new features. Configured and customized new and existing software products, created and maintained software file security, developed automatic routines to enhance production tasks eliminating manual intervention tasks.
• Used essential tools for handling files, directories, command-line environment and documentation.
• Configured local storage file systems within partitions and logical volumes.
• Deployed, configured and maintained systems, including software installation, updates and core services, patch management support and application verification.
• Handled RPM and YUM package installations, patch and other server management.
• Created physical volumes, volume groups and logical volumes.
• Gained experience with user management and creation; group management and account creation, security, privileges, disk space and process monitoring in RedHat Linux and CentOS

Linux System Administrator

Responsibilities:

• Prepared security audit schedules for external auditors.
• Compared data contained in a variety of technical records in order to detect errors/discrepancies.
• Administered system accounts, system monitoring and reconciliations.
• Initiated and participated in severity calls and documented RCAs.
• Monitored system performance of virtual memory, managing swap space, disk and CPU utilization.
• Ran password configurations, process monitoring, boot up and shutdown procedures.
• Coordinated backup policy and execution of DR effort between home data center and regional offices.
• Updated and documented Help Desk tickets with Remedy ticketing system.
• Maintained system accounting files and logs and systems error logs.
• Installed and implemented new patches to the Linux operating system software.
• Assisted with internal Help Desk functions including application setup, connectivity issues, and product training.

Linux Systems Administrator

Responsibilities:

• Installed Red Hat Enterprise Linux. Managed packages on Red Hat using rpm and yum
• Created Virtual hosts containers for multiple web sites
• Implemented Network Communications on Servers
• Managed Red Hat drives/devices using Linux Logical Volume Manager
• Performed User/Group Account Administration; implemented password aging; monitored login
• Troubleshot performance issues using vmstat, iostat and netstat
• Installed other third party applications on servers
• Updated server baseline documentation in line with changes on servers