SUMMARY:

• Experience in Configuration, System Administration Installation and administration of CentOS, Rhel & Ubuntu.
• Automating and managing applications using configuration Management Tool Puppet.
• Proficient in creating, maintaining and versioning puppet manifests and modules to operate system operations and applications.
• Shared knowledge sessions across teams to leverage capabilities of puppet DSL, ERB templating system and Hiera.
• Experience working with all aspects of software development life cycle (SDLC) such as Analysis, Planning, Development, Testing and Implementation.
• Create and maintain fully automated CI/CD pipelines for code deployment and RPM builds using Jenkins to reduce human error and speed up production processes.
• Administration/Maintenance experiences for Jenkins including HA installation, backup, and hardening, with addition of Jenkins plug - in.
• Integrated Maven with Jenkins for the builds as the Continuous Integration process.
• Experience in Setup Jenkins distributed build and configure master and slaves.
• Automated nightly build, test, and reporting mechanisms using Jenkins.
• Expert in Installing, configuring and maintaining Application Servers.
• Experienced in Configuring and Monitoring using New Relic.
• Experience deploying and managing EC2 instances, Elastic Load balancer, VPC deployment and management and setting up of S3 bucket leveraging power of AWS.
• Experience with scripting in bash shell.
• Creating and maintaining user accounts, profiles, rights, disk space and process monitoring.
• Networking and Communication devices, Server Utilities, TCP/IP, FTP. Expert in Data center operations including hardware, software setup monitoring, troubleshooting on a 24x7 basis with Smart trouble ticketing Systems: Remedy and Jira.
• Experience working with Docker containers for portable deployment & rapid development with minimum run time requirements.
• Refining monitoring to ensure we have increased visibility using NewRelic and AWS cloudwatch.
• Experience with application porting to Kubernetes.
• Experience in leveraging (IAAS and PAAS) capabilities of public and private cloud.
• Writing Ansible playbooks and Roles as per requirement of applications and automation deliverables.
• Apply OS patches and upgrade and configure system software that supports enterprise infrastructure applications
• Experience working in Agile/Scrum Environments.

TECHNICAL SKILLS:

Database Servers: MySQL, Cassandra

Configuration Management: Open Source Puppet & Puppet Enterprise and Ansible

Orchestration tools:: Mcollective, Terraform, Kubernetes

Virtualization: VMware Esxi 5.1 & 5.5, vSphere, Vagrant, EC2

Webservers: Apache, Nginx

Monitoring Tools: Nagios, Icinga and New Relic

Scripting: UNIX shell Scripting, BashCI/CD: Jenkins, Maven

Version Control System: GIT, Bit Bucket.

Containerization: Docker, Kubernetes (Container orchestration)

Load Balancer: Nginx, Haproxy & ELB

PROFESSIONAL EXPERIENCE:

Confidential, San Francisco, CA

Senior DevOpS Engineer

Responsibilities:

• Providing L2/L3 Support for DEV, QA, UAT and Prod Environments for Internal and External customers.
• Configuring Nginx as load balancer for applications for internal & external customers.
• Securing applications at OS, Networking and Application level.
• Extension and maintenance of internal PAAS Platform for internal and external customers.
• OS installation, patching and maintenance for WSO2, Cassandra & Nginx Technologies hosted on RHEL 6 & RHEL7.
• Automating daily tasks using Puppet by writing manifests, modules, ERB templates and by writing Ansible playbooks.
• Application and OS patching for maintaining latest security standards.
• Configured, Administered Jenkins Master and slaves and respective plug-ins as per project requirement.
• Used Ansible paired with Jenkins for automation of CI/CD process.
• Creating Jenkins piplelines for CI/CD in order to reduce cycle time.
• Administration of Jenkins Masters and Slave servers including various Jenkins plugins to enhance CI/CD.
• Generating reports from hosted applications using Python Scripting.
• Installation, upgrading and maintenance of Datastax Cassandra database.
• Coordinating with monitoring, networking & dev teams to ensure maximum availability of service.
• Assisting developers how to leverage containerization and fast Vm deployment on local machines for easy code sharing and application testing.
• Dockerization of applications for container enabled rapid development and deployment with minimum run time requirements.

Confidential, San Jose, CA

Senior Linux Administrator

Responsibilities:

• Managing Physical servers & Virtual Machines for various environments for HLT, Engineering and Science Teams.
• Maintenance of physical GPU machines and various open source packages used for Computational research and Machine learning packages like Caffe, Cuda, Cudnn, tensorflow etc.
• Deploying Machine Translation models into Production developed by Science team manually and by using internal PAAS service.
• Managing LVM for extending storage for huge GPU processing & closely working with Storage team to resolve storage issues.
• Automated internal deployments using Puppet, Hiera on Openstatck based private cloud.
• Automating daily tasks using scripts.
• Configured Jenkins build pipelines using Jenkins master and slave architecture.
• Deploying immutable infrastructure using Terraform.
• Installed & configured VMware Esxi 5.5, vSphere for Virtual guest provisioning and management.
• Tested applications requiring GPU support on Amazon cloud for performance analysis.
• Worked with Storage team to setup high speed SAN mounts for the development clusters.

Confidential

Linux Administrator

Responsibilities:

• Providing L2 support for 250+ servers.
• Coordinating with L1 team to resolve the issues.
• Monitored day to day system administrator’s activities which includes performance monitoring, tuning, disk space issues, Network related issues & user management issues.
• Working with senior administrators and developers to troubleshoot the core issues.
• MySQL new server installation, administration and migration.
• Managed and monitor like day to day backup.
• Coordinating with Incident Management and configuration management teams to streamline the processes required to maintain maximum uptime thereby reducing escalations.
• Configured clusters to provide fail over, load balancing and deployment of Charging System application servers.
• Troubleshooting of IN applications to ensure maximum uptime.

Confidential

System Administrator

Responsibilities:

• Monitoring more than 240 Linux servers for performance ensuring maximum uptime.
• Managing and monitoring IN nodes using Nagios to support infrastructures.
• Investigating the cause of issue and performing First Level troubleshooting.
• Monitoring and providing support for Ericsson Charging System 3.0.
• Following the defined process to achieve the SLA.
• Documenting the process as per instructions following company policies.
• Executing the process (running manual Linux commands) for checking services and raising trouble tickets.
• Raising Trouble tickets to 2nd LA via Remedy tool.