For the past 8+ years I have experience supporting a mixed enterprise environment consisting of mostly Linux systems & some Windows systems. Utilizing various DevOps methodologies to meet business needs. I have experience with technologies & projects such as virtualization, RHEL CentOS Rocky Oracle AWS & Ubuntu Linux, configuration management, CI/CD, Tenable IO/Nessus, migration projects, implementation projects and much more.
● Responsible for creating detailed technical documentation along with architectural diagrams utilizing Confluence.
● Configure and supporting Atlassian Suites (JIRA, Confluence).
● Managing, monitoring, maintaining, and enhancing the company’s AWS & Azure infrastructure.
o Perform system and application patching.
o Cloning needed instances to create DEV/TEST environments.
o Managing DNS by creating needed public and private records after VM has been created (Azure).
o Control system uptime by utilizing Park My Cloud to create needed schedules for when VM’s and instances should be powered on or off at a certain time.
o Deploy needed SASS monitoring solution “Data Dog” to monitor system resources, system availability, and application performance monitoring.
o Utilizing AWS Market place to find needed AMI’s to deploy other needed data monitoring, & DevOPs tools.
o Investigate storage related issues.
▪ Identifying data that is no longer needed.
▪ Creating needed volumes/disks from scratch or clone other volumes/disks.
● Being able to partition volumes/disks according to needs (example: Linux partition, Swap partition, LVM partition, etc…)
▪ Being able to expand needed volumes/disks.
▪ Being able to encrypt data partition using LUKS.
● Managing, monitoring, maintaining, and enhancing SCM/CI/CD servers, as well as development and production servers.
o Utilizing Jenkins to push out needed rpm files for application upgrade/install.
o Utilizing Jenkins to deploy freshly built Rocky Linux 8 instance with application installed, configured, and running.
o Utilizing Jenkins to deploy freshly built Rocky Linux 8 instance for DEV/TEST environments.
● Implement Tenable I/O & develop along with implement vulnerability management best practices.
● Create custom images that are published to Azure marketplace for companies to purchase Semantic software.
● Provide web application support for various customers who purchase Semantic software.
o Communicate with customers to get an approved time window for application patching.
o Utilizing various bash scripts and ansible playbooks to monitor, maintain, and upgrade applications.
o Trouble shoot various PostgreSQL 12 – 15 database issues.
o Trouble shoot various application performance issues.
o Provide guidance on how virtual environments need to be deployed for optimal application performance.
● Managing Infrastructure as Code migration, including importing existing and creating new components and deployments as code.
● Managing container-based microservice deployment, including using docker, ECS, EKS and Kubernetes.
● Managing automation, CI/CD, security, backups, disaster recovery.
● Provide advice and guidance to development team about microservices and containers-based development.
● On a weekly basis, provide 24/7 on call support.
● Mentor other employees to help sharpen Linux admin/engineering skills.
o Mentor other employees on how to use, install, upgrade, and troubleshoot Semantic software so they are well prepared to fulfill customer needs.
o Mentor other employees who’s Linux skills are minimum & teach them Linux fundamentals.
● Host daily SCRUM meetings.
● Develop solutions to complex technical issues.
Assignment – Goddard Space Flight Center (NASA). Greenbelt,MD
● Build, deploy, manage, and maintain new and existing infrastructure systems.
● Managing, monitoring, maintaining, and enhancing the company’s AWS & Azure infrastructure.
● Managing container-based microservice deployment, including using docker.
● Managing, monitoring, maintaining, and enhancing SCM/CI/CD servers, as well as development and production servers.
● Monitor and analyze data center infrastructure resources and system applications.
● Implement and maintain backups redundancy strategies.
● Responsible for the security of the managed infrastructure systems.
● Responsible for collaborating and defining policies, procedures, and technical documentation including reports, design, maintenance, operational, and support procedures.
● Responsible for the on-going development of automation strategies.
● Engage with upper management and stakeholders with requirements, status reports, activity summaries, and achievements.
● Responsible for creating project plan(s) to help track progress of migration projects.
● Assisted with Physical to Virtual (P2V) and datacenter application migrations.
● Communicate with stakeholders to identify their needs and visions.
● Knowledge of architectural elements required to support large environment installations.
● Use expert-level administration and optimization of hosts and servers to ensure high availability and appropriate resource management.
● Standardize and automate processes and monitoring using scripting and advance technologies offered by the data center.
● Install and configure operating systems, software, and hardware components, and clearly document the design, maintenance, and support procedures for routine tasks to leverage IT support staff.
● Routinely test software for bugs, redundancies, and security issues.
● Conduct high-level root-cause analysis for service interruption and establish preventive measures.
● Create reports and documentation out-lining findings and solution; oversee the overall backup strategy and daily operations for secure backups and restore testing.
● Responsible for completing various Windows administration tasks.
o Patch Windows systems.
o Update CA and SSL certificates.
o Network & domain modifications.
● Utilized ansible playbooks to automate various tasks & to standardize configuration management for Linux servers.
o Used playbooks to push out & update Root CA & SSL certificates.
o Used playbooks to push out patches to multiple Linux Servers.
● Also utilized Red Hat Satellite for a patch management system to make sure Linux systems have updated repositories.
● Utilized LDAP for user authentication for Linux & Windows VM’s.
● Utilized Tenable Security Center to scan & help remediate various vulnerabilities on Windows and Linux systems.
● Utilized Nutanix Prism to build Linux (RHEL 7 & 8) virtual machines along with Windows virtual machines.
● Installed and configured Apache Subversion (SVN) for a version control system to manage and track changes in files and directories.
● Utilized Nagios to monitor Linux and Windows systems to ensure system uptime.
Assignment – National Archives and Records Administration. College Park, MD
● Create and maintain fully automated CI/CD pipelines for code deployment using Octopus Deploy and PowerShell.
● Actively manage, improve, and monitor cloud infrastructure on AWS, EC2, S3, and RDS, including backups, patches, and scaling.
● Built and deployed Docker containers to break up monolithic app into microservices, improving developer workflow, increasing scalability, and optimizing speed.
● Work closely with product and engineering to make sure our systems are robust and easy to manage.
● Proficient in AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, SNS, RDS, Cloud Watch, Cloud Trail, Cloud Formation, IAM, S3 and route 53.
Assignment – Department of Treasury (U.S. Mint). 9th Street NW Washington, DC
● Technical Lead for all Linux Engineering.
● Responsible for monthly SLA reporting on resources being used within the environment, and backups failure and success rate.
● Veritas Netbackup administrator.
o Responsible for monitoring backups to make sure they are successful and troubleshoot why backups failed.
● Work closely with product and engineering to make sure our systems are robust and easy to manage.
● Experience administering, installing, configuring, and maintaining Linux systems.
● Creating, cloning Linux Virtual Machines, and creating Linux Virtual Machines from templates using VMware ESX 6.5, 6.7.
● Utilized Ansible tower for configuration management and automation.
● Managing, monitoring, maintaining, and enhancing the company’s AWS infrastructure.
● Assisted with Physical to Virtual (P2V) and datacenter application migrations.
● Managing container-based microservice deployment, including using docker.
● Managing, monitoring, maintaining, and enhancing SCM/CI/CD servers, as well as development and production servers.
● Following STIG’s to harden AWS Linux 2 instances and CentOS VM’s.
● Completing various disaster recoveries using SRM (Site Recovery Manager) and Recover Point.
● Assisting in ISSO work:
o Assisting in Risk Management Framework.
o Using Tenable Security Center to scan VM’s and AWS instances.
● Using Tenable Security Center to scan VM’s and AWS instances.
o Assisting in Risk Management Framework.
● Gathering evidence to meet auditing deadlines for Linux Virtual Machines/AWS Instances.
● 24 hour on call support for mission critical incidents and requests.
Expanding Windows file system drives.
Assignment – Department of Treasury (U.S. Mint). 9th Street NW Washington, DC
● Design, implement and support Linux computing systems hardware and software infrastructure.
● Administer and maintain Linux server operating systems and related software within a complex computer environment.
● Experience installing, upgrading and configuring RedHat, CentOS, & Oracle Linux 5.x, 6.x, 7.x using Kickstart Servers and Interactive Installation.
● Creates Linux Virtual Machines using VMware Virtual Center.
● Design and implement robust and secure IT solutions within a fast-paced research environment using open-source tools.
● Apply configuration management disciplines utilizing Ansible to maintain software revisions, security patches, hardening, and documentation.
● Managed projects from inception to completion.
● Managing, monitoring, maintaining, and enhancing the company’s AWS infrastructure.
● Managed fully automated CI/CD pipelines for code deployment.
● Manages Patches configuration, version control.
● Perform network administration, security monitoring as well as backup and redundancy procedures.
● Solid understanding of Networking Concepts – Ipv4, TCP/UDP, DNS, DHCP, HTTP, SSL/TLS.
● Assist with the delivery, patching and maintenance of operational RHEL systems.
● Using Tenable Security Center to scan VM’s and AWS instances.
o Assisting in Risk Management Framework.
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