DILIP JAYANTHAN

Company Summary

Devkraft, Experiences and Products brings the magic of The Walt Disney Company’s powerful brands and franchises — including Disney, Pixar, Marvel, Star Wars, ESPN, Twentieth Century Studios and National Geographic — into the daily lives of families and fans around the world to create magical memories that last a lifetime.

Responsibilities

• Design and manage public and private cloud infrastructures using AWS, which includes VPC, EC2, S3, Cloud Front, Elastic File System, RDS, Direct Connect, Route53, Cloud Watch, Cloud Trail, and IAM. Operations were automated using CloudFormation.
• Set up CI/CD pipelines so that each commit a developer makes goes through the standard software development lifecycle and gets tested well enough before it can make it to production.
• Implement Cloud Infrastructure as a service environment using open-source technology OpenStack to enable portability of cloud services across hybrid cloud environments.
• Work on OpenStack threat modeling which takes a comprehensive look at the system components, protocols and code.
• Deploy AWS Infrastructure with IAC using Terraform as well as Cloud Formation on some of the legacy applications.
• Target deployments of AWS infrastructure to dev, qa and prod environments using Terraform code.
• Work with development team to migrate Ant scripts to Maven and work on authoring POM.XML files, and perform releases with the Maven release plugin and manage Maven repositories.
• Develop automation scripting in Python to deploy and manage Java applications across Linux servers.
• Work on customization of existing Python scripts of some of the internal applications.
• Utilize AWS step-function for orchestrating and automating the pipeline.
• Develop scripts for AWS orchestration, maintenance, and expansion of AWS infrastructure.
• Branch, tag, and maintain the version across the environments using SCM tools like GIT, Subversion (SVN) and TFS.
• Create Ansible playbooks to automatically install packages from a repository to change the configuration of remotely configured machines and to deploy new builds.
• Lead transition from manual configuration and deployment to IAC using Chef, including design and implementation of cookbooks and tooling.
• Create Docker images using a Dockerfile and work on Docker container snapshots, remove images, manage Docker volumes as well as set up Docker Host.
• Use Kubernetes as open-source platform for automating deployment, scaling and operations of application containers across clusters of hosts, providing container-centric infrastructure.
• Established monitoring for microservice based applications using Grafana and Prometheus.
• Used ELK solutions for log monitoring and log aggregation.
• Configure AWS EMR to process big data across Hadoop clusters of virtual servers on S3.
• Implement security measures AWS provides and employ key concepts of IAM.
• Ingest data through AWS Kinesis Data Stream and Firehose from various sources to S3.
• Add support for Amazon AWS S3 and RDS to host static/media files and the database into Amazon Cloud.

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Company Summary

The Charles Schwab Corporation is an American multinational financial services company. It offers banking, commercial banking, an electronic trading platform, and wealth management advisory services to both retail and institutional clients.

Responsibilities

• Set up UNIX/Linux environments for various applications.
• Built AWS infrastructure through configuration management tool CloudFormation and Ansible.
• Designed an architectural diagram for applications before migrating into Amazon Cloud for flexible, cost-effective, reliable, scalable, high-performance and secured operations.
• Responsible for the design and maintenance of the Subversion/Git Repositories, views, and the access control strategies.
• Responsible for on-boarding application teams to build and deploy their code using GitHub, Jenkins, Nexus, and Ansible.
• Installed, configured, and administered Linux systems (Redhat, SUSE, Centos).
• Configured network services such as NFS/NIS/NTP for UNIX/Linux Servers.
• Completed automation deployments using AWS by creating the IAM and used the code pipeline plugin to integrate Jenkins with AWS and also created EC2 instances to provide the virtual servers.
• Set up databases in AWS using RDS storage and configured instance backups to S3 bucket.
• Maintained user accounts (IAM), RDS, Route53, SES and SNS services in AWS Cloud.
• Configured AWS Import/Export to accelerate moving large amounts of data into and out of AWS using portable storage devices for transport.
• Automated deployment of applications inside software containers and configured Docker containers for branching purposes.
• Used Git for source code version control and integrated with Jenkins for CI/CD pipeline, code quality tracking and user management with build tool Maven.
• Defined dependencies and plugins in Maven POM.XML for various activities and integrated Maven with GIT to manage and deploy project-related tags.
• Coordinated in pushing code to GitHub and automated the process of release by pushing all the code to GitHub.
• Experience modeling data and selecting application paradigms using PostgreSQL and NoSQL.
• Designed and built a continuous integration and deployment framework for Chef Code using test-driven development.
• Deployed VPC with VPN attachment to physical datacenter.
• Automated the front-end platform into a highly scalable, consistent, repeatable infrastructure using a high degree of automation using Chef, Vagrant, Jenkins, and CloudFormation.
• Used metrics to monitor application and infrastructure performance.
• Automated the process of configuring property files and JDBC-related settings on WebLogic server during deployment using WLST scripts.
• Pushed VPC flow logs and their execution into Splunk and monitor deployments.
• Reviewed existing systems and made recommendations for improvements.
• Scripted Linux repository database comparisons using Python for integration into MySQL RDBMS.

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Responsibilities

• Designed and built AWS infrastructure using various resources such as VPC, EC2, S3, IAM, EBS, Security Groups, Auto Scaling, Transfer for SFTP, Elastic Beanstalk, CloudFront, VPC, CloudWatch, Lambda, Trusted Advisor, RDS, Cost Explorer & AWS CLI.
• Implemented rapid provisioning and management for Linux using Amazon EC2, Ansible, and custom Bash scripts.
• Implemented life-cycle policy for snapshots.
• Deployed AWS resources using AWS Cloud Formation.
• Created shell scripts for scheduling automated backups from a file system (mounted as a local mount point) to a local disk using rsync and sent email upon completion.

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Responsibilities

• Installed, configured, monitored and administrated Linux servers, which included the design and selection of relevant hardware to support the installation and upgrades for those operating systems.
• Installed, deployed, and managed Linux RedHat Enterprise 7.x, CentOS, Ubuntu, and installed patches and packages for Red Hat Linux Servers.
• Configured and installed RedHat and Centos Linux Servers on virtual machines and bare metal Installations.
• Created and maintained Python scripts for automating build and deployment processes.
• Utilized Nagios-based open-source monitoring tools to monitor Linux Cluster nodes.
• Created users, managed user permissions, maintained user and file system quotas, and installed and configured DNS.
• Worked with DBA team for database performance issues, network related issues on LINUX/UNIX servers and with vendors regarding hardware related issues.
• Monitored CPU, memory, hardware and software including raid, physical disk, multipath, filesystems, and networks using Nagios 4.0 monitoring.
• Hosted servers using Vagrant on Oracle virtual machines.
• Automated daily tasks using bash scripts while documenting the changes in the environment and in each server, analyzing the error logs, user logs and /var/log messages.
• Adhered to industry standards by securing systems, directory and file permissions, groups and supporting user account management along with the creation of users.
• Performed kernel and database configuration optimization such as I/O resource usage on disks.
• Created and modified users and groups with root permissions.
• Administered local and remote servers using the SSH on a daily basis.
• Experience with Nginx and Apache Tomcat web servers for application deployment.
• Experience with analyzing and monitoring of log files to troubleshoot issues.
• Involved in implementing Ansible playbooks configuration & maintaining them in several environments on AWS cloud.
• Used CI/CD tools Jenkins, Git, Jira & Docker registry for configuration management & automation using Ansible.
• Developed shell scripts and python scripts to automate system level activities, run API calls, and parse through outputs of REST API calls.
• Created and maintained Python scripts for automating build and deployment process.
• Facilitated client’s data interface utilizing SSH File Transfer Protocol.
• Administered Linux servers for functions such as managing Apache/Tomcat, mail servers, MySQL databases, and firewalls in development and production.

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