Wrote Ansible and Python code to maintain Research Supercomputing Cluster with over 8000 nodes. Improved automation of code quality checks. Conducted code reviews. Documented standard development processes.

• Developed 30+ Puppet modules controlling every aspect of O/S security-hardening. • Used Azure DevOps for project and task tracking. • Developed Python and Ruby code to analyze Github commits and pull-requests for all code repositories and present a one-page summary of pending code-changes. • Developed Python code within Github workflow to automate CI/CD test pipeline. • Developed python and ruby code within Antora and Github workflows to automate generation of Puppet module documentation. • Developed and promoted company Style Guide; persuaded peers to adopt a consistent template for all Pull Request summaries, including blocks for Scope, Impact, Coordination, and Testing. • Developed pipeline to destroy and deploy VMs for functional testing. Used Terraform Enterprise in first version, then replaced with Python / Azure API to resolve functional and performance issues. • Provided continuity throughout multiple personnel changes via Knowledge-Transfer presentations and accompanying process documentation. • Automated deployment of required agents to support security-scanning, vulnerability-scanning, server registration, log collection and analysis, and privileged account creation. • Wrote supporting integration code in Ruby, Python, Bash, and Powershell. • Developed integration code for CyberArk onboarding. • Ensured that all supported code runs equally well in RHEL6-8, CentOS6-7, Debian10-11, Ubuntu 18-22, Windows 2012-2021, AWS, Azure, GCP, VMware, and On-Prem. • Coordinated with Operations to ensure that VM’s are correctly sized for their measured workload. • Coordinated with product owners, application teams, and operations support to document requirements, implement solutions, resolve performance issues, and automate remediation. • Installed, configured, evaluated, and reported on several unit-testing frameworks, including Kubernetes-based CD4PE. • Interviewed and trained new hires.

• Developed complete CI/CD pipeline for Conning Financial using Puppet and Terraform. • Use Azure DevOps for repository and project tracking. • Supported database and application servers in AWS and Vmware. • Wrote supporting code in Ruby, Python, Bash, and Powershell.

• Led CloudAwareFederal through FedRamp process. • Wrote custom CloudAwareFederal plugins for Filebeat, Ossec, and Nessus using Ruby, Bash, Powershell, and C Language. • Deployed all components of custom ELK (ElasticSearch, Logstash, Kibana) stack. • Ensured that all code ran equally well in AWS, Azure, Google Cloud, VMware, and On-premise servers. • Consulted with product owners to resolve performance problems. • Used Jira for project tracking and task documentation. • Wrote and contributed to top-rated Open-source projects. • Worked with GSA DevSecOps team to build Linux-based security and cloud automation solutions using Python, Ansible, Terraform, and AWS. • Used Python to develop Ansible front-end for Terraform that deploys AWS Cloud infrastructure from YAML code, thus achieving IaaS (Infrastructure as a Service). • Interviewed and trained new hires.

• Migrated NCR SecurePay team from onsite servers to AWS. • Used Terraform and Saltstack to automate server deployment and configuration. • Build high-availability services using HAProxy, Apache Kafka, and MySQL with InnoDB. • Integrated with DataDog and PaggerDuty for host monitoring and alerting. • Implemented MySQL clustering using Tungsten-replicated hot-standby, reducing DR-failover time from minutes to seconds. • Wrote supporting integration code in Python, Bash, and Powershell.

• Taught Verizon Telematics how to perform CI/CD for a single Java-based application. • Built a complete CI/CD pipeline using RHEL, Puppet, Git, Jenkins, Maven, Selenium, and related open-source tools in a proprietary cloud environment. • Demonstrated that each element of the pipeline could be independently and automatically rebuilt from source, on demand. • Demonstrated that each individual commit to the source repository triggered a new round off unit, functional, and integration testing. • Contributed improvements to top open-source Puppet modules. • Developed and presented corporate training on promoting cooperation within the open-source community.

• Guided Home Depot through transition from Opsware to Puppet. • Developed Puppet modules and Rspec unit tests. • Deployed Spacewalk/Satellite, Kickstart, and Jenkins. • Used Jira to manage project status. • Mentored peers on Puppet, CI/CD, and code-quality. • Contributed ServiceNow automation to simplify daily check-in process.

• Wrote Puppet code to manage 400+ servers in support of the Homes.com website. • Proactively deployed “FutureParser” to ease transition from Puppet-3 to Puppet-4. • Deployed applications such as Apache, Nginx, NodeJS, ColdFusion, MongoDB, OracleDB, MySQL, Squid and PowerDNS. • Enforced O/S Security hardening for Ubuntu, RedHat, and Oracle Linux. • Contributed bugfixes to popular open-source Puppet modules. • Used Groovy, Bash, and Jenkins to automate the creation of Debian packages from CPAN (Perl) modules. • Provided 24x7 on-call support for website hosted on VMware VServer. • Wrote Root-Cause-Analysis reports in response to performance issues and outages. • Collaborated with web developers to promote Quality Assurance and well-documented code. • Migrated Oracle database from Solaris to Oracle Linux. • Helped design and deploy Disaster Recovery (DR) solution in AWS using Kickstart and Satellite. • Designed and deployed performance monitoring solution using Nagios, CheckMK, and PagerDuty. Wrote and contributed enhancements to the Nagios Plugins collection. • Worked with logging team to improve Squid dashboards, alerts, and analysis. • Analyzed NewRelic reports to identify and remediate performance issues. • Worked with DNS team to improve stability and performance of name resolution. • Interviewed and trained new hires.