Dharmendra Kumar

**** ********** *****, ***** *****, CA - 95054

925-***-**** E-mail: adhz74@r.postjobfree.com

Summary

DevOps Engineer / Certified AWS Solutions Architect – Associateover 18+ years of professional IT experience in multi Cloud computing (AWS and Azure), DevOps Implementation, Ansible, Kubernetes, Docker, GIT, terraform, python, bash/shell script, build & release engineering and Linux/UNIX, VMware and Windows administration in physical, virtualized and cloud environment.

Key skills

Linux System Administration Kubernetes Administration Project Management

Monitoring & Troubleshooting Container & Micro Services Backup and Recovery

AWS / Azure Administration Data Center Cloud Migration Jenkins Administration

Technical skills

Server OS

RHEL, CentOS, Ubuntu, Solaris, Debian, SUSE Linux, Oracle Enterprise Linux, Mac and Windows Server

Virtualization

Vagrant, VMware (vSphere, ESXi Server, vCenter, HA, DRS, FT, vMotion and Data Protection)

Web Server & Database

Apache, Tomcat and IIS, Oracle Database, MySQL Server and MS SQL server 2014

Networking Protocols

TCP/IP. DHCP. DNS, FTP, TFTP, NFS, SMTP, SNMP, LDAP, NIS, NIS Storage and Backup

SAN, NAS and DAS (EMC, NetApp, Quantum)

Scripting, Programming and Other Languages

Bash,Python, PowerShell, HTML, C

Container and Orchestration

Docker, Docker Hub, Docker Swarm, Kubernetes, Hashicorp Nomad

Version control and Continuous integration & Configuration

Jenkins, Ansible, GIT& GitHub and GitLab

Cloud computing&Infrastructure as Code

AWS, Azure, GCP, Terraform and CloudFormation

Monitoring &Log Management tools and Security

Vault, Nagios, ICINGA and Splunk

DevOps & Cloud Engineer

Ricoh Innovations Corporation Nov 2018 - Present

Cupertino, CA

Role: Lead DevOps engineer and Cloud architect team. Working with Development, QA, and Operations team in order to migrate On-premises, application and database running on existing virtual (VMware) and Bare-Metal infrastructure into cloud (AWS and Azure) environment as micro services with Kubernetes and Docker.

Responsibilities and Accomplishment:

Capacity planning for data center, application and database migration from On-premises to Cloud.

Design and implementedmicro services architecture with Docker, Kubernetes, AWS and Azure achieved 99.99999% uptime.

Migrated On-premise data centers from monolithic to Blue-Green in AWS to achieve Zero downtime.

Migrated on-premises monolithic (.net core) application with database as server less micro services to AWS Cloud using AWS ECS and Lambda with AWS Step function using terraform.

Developing, designing, deploying, migrating, integrating and configuring an AWS infrastructure and Implementing AWS authentication and securing data.

Migrated on-premises databases (Oracle, MS SQL, and Postgres) to AWS RDS.

Manage, improve & monitorAWS cloud infrastructure (EC2, S3 Bucket, VPC, IAM, CloudWatch, CloudTrail).

Created containerize Test and QA environment improved resource utilization and performance up to 30%.

Created automated deployment pipeline using Ansible, Python, Terraform, Jenkins and GITreduced deployment time from 6 hours to 1 hour.

Wrote terraform & Cloud Formation scripts with python and Power Shell to migrated current virtual (VMware) and bare-metal infrastructure into AWS and Azure.

Environment: AWS, Azure, Kubernetes, Terraform, Ansible, Docker, ECS, Lambda, S3, Jenkins, GIT, Window Server, MS SQL Server, PowerShell Bash and Python.

DevOps Engineer

Apple Inc. Feb 2018 - Oct 2018

Sunnyvale, CA

Role:As DevOps Engineer managedon-premisesdata center& AWS Cloud environment, automated OS& application installation, application deployment, OS upgrade, patching and packages.

Responsibilities and Accomplishment:

Managed, improved & monitor cloud infrastructure on AWS (EC2, S3 Bucket, VPC, IAM, CloudWatch etc.).

Built and deployed Docker containers with Docker file and Docker compose improving developer workflow, increasing scalability, and optimizing speed.

Created and managed automated OS (RHEL, OEL, CentOS) installation using PXE and Kickstart with network OS repo for +1000 VM and Bare-Metal machines improved installation time average 60 minutes to 10 minutesand improved 90% human resource utilization.

Developed the Jenkins Cluster Architecture with master and slave using Docker and Kubernetes and maintained artifacts in repositories such Frog, Git & GitHub and Docker repository.

Splunk installation and add host, monitor Splunk logs to troubleshoot java based application and coordinated with application developer.

Created automated packages, patching and OS upgrade infrastructure using Ansible, Python and Bash reduced OS upgrade time from 8 hours to 2 hours and achieved zero downtime.

Environment: OEL, RHEL, CentOS, Python & Bash Script, Ansible, AWS, Jenkins, Splunk, ICINGA, Kubernetes, PXE, Terraform, and GITHUB.

Sr. DevOps Engineer

Callidus Software Inc. Jan 2017 - Jan 2018

Dublin, CA

Role:Worked as DevOps Engineer to automate system administration task, create Ansible configuration management and migrated Java based visual application to AWS environment.

Responsibilities and Accomplishment:

Created automated OS & application installation PXE environment with bash & python scripts and OS ISO repository, reduced average installation time from 1 hour to 15 minutes.

Created and implemented migration & transfer polices to migrate on-premises datacenter to AWS improved performance with elasticity, achieved 99.95% uptime and reduced cost upto 40%.

Wrote terraform & CloudFormation scripts with python to migrated current virtual (VMware) and bare-metal infrastructure into AWS.

Created Jenkins cluster as Docker container using Kubernetes and Ansible with GIT& GitHub and artifacts in repositories such Frog.

Designed and deployed monitoring, metrics and logging systems on AWS using CloudWatch, and CloudTrail.

Coordinated with Developers, Network, Database, Security and Infrastructure team to created Nagios and Datadog monitoring solution for Infrastructure and applications.

Environment: RHEL, CentOS, Docker, AWS, OEL, Jenkins, Kubernetes, Artifactry, Python, Terraform, Bash script, and GIT.

DevOps Engineer

LG Silicon Valley Lab March2013 - Dec 2016

Santa Clara, CA

Responsibilities and Accomplishment:

Create automated OS & application installation PXE environment with bash & python for bare-metal servers and virtual (VMware) machines.

Create python scripts to automate VMware snapshot and backup & recovery.

Migrate production bare-metal servers to VMware virtual environment increased resource utilization upto 30% and up time up to 95% and reduced management cost upto 40%.

Installed and configured Nagios including customizing the tool to monitor bare-metal and virtual server & machine; provide timely response to any issue.

Automated build and deployment using Jenkins with Git to reduce error and speed up production deployment processes.

Wrote Ansible playbooks to deploy, configure and manage servers & applications reduced infrastructure management time upto 60%.

Designed, created and managed QA and Test environment using AWS services (VPC, S3 bucket, IAM polices, Subnet, EC2 etc.).

Part of the team to perform business continuity/disaster recovery planning and testing.

Hardware administration, replacement and troubleshooting (Dell and HP C7000 blade server and HP ProLiant DL380 Gen7, Gen8, Gen9).

Linux & Windows servers upgrade & patching, troubleshooting and root cause analysis to improve performance.

Environment: RHEL, Ubuntu, Windows Server, Ansible, VMware, OEL, Python & Bash script, Nagios, Jenkins, Git and AWS.

Sr. Linux System Administrator

Best Buy Nov 2009 - Dec 2012

Richfield, MN

Roles& Responsibilities

Joined the System administrator team as Sr. Linux System Administrator to manage on-premises datacenter &virtual (VMware) environment and automate system administrator tasks using Bash and Python.

Installation and administration of Linux servers (RHEL, CentOS and Ubuntu) on VMware and physical servers.

System configuring/hardening by turning off unnecessary services and schedule system process with Cron Job.

Create scripts to automate user management, review logs, to monitor disk space using bash and python.

Root cause analysis for VMware vSphere & ESXi hosts, windows server, Linux, Ubuntu servers and EMC storage.

Managing disk file systems, server performance, user's creation and granting file access permission.

Environment: RHEL, SUSE Linux, Ubuntu, Windows Server 2008, Python & Bash Script, VMware.

Sr. Linux Administrator

Clearshift Corporation June 2007 - Oct 2009

San Francisco, CA

Roles &Responsibilities

As a Sr. Linux Administrator managed on-premises datacenter that include hardware, Servers (RHEL, Windows server 2003 & Ubuntu), Network, Database server, Apache Webserver and Monitoring infrastructure using Nagios and SNORT. My responsibilities include.

Installation, configuration and manage LAMP (RHEL, MySQL, Apache & PHP), Window server, Nagios, SNORT, DNS, NFS, Samba, SMTP, Cisco ASA VPN, Red Hat Satellite (patch, package and configuration management).

Server & application Root causeanalysis, MySQL database server user management, fix hardware issues and new hardware installation and open source software installation and management.

Environment: RHEL, Ubuntu, Windows Server 2003, MySQL, Red Hat Satellite, Nagios, Samba, DNS, Cisco ASA.

System Administrator

Towards Vision Technologies Pvt. Jan 2003 - June 2007

New Delhi, India

Roles &Responsibilities

As a System Administrator, responsible for administrative tasks for SUSE Linux &RHEL and Windows.

Manage Red Hat Satellite and responsible for patch, package, and User & Group management and resolved day to day IT issues.

Created and managed Apache web server and Oracle Database server and working closely with Development and QA team.

Environment: RHEL, SUSE Linux, Apache, FTP, Oracle Database, Windows and Red Hat Satellite.

Education

Master of Computer Science, June 2003

Janardan Rai Nagar Rajasthan Vidyapeeth University, Udaipur (INDIA)

Post Graduate Diploma in Computer Applications (PGDCA)

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