DevOps engineer

Rahul Parasa

* ******** **** ****, *** ***, Philadelphia, PA, 19103 +1(704)/930-9795 ******.******@*****.*** www.linkedin.com/in/rahul-parasa

EDUCATION

Campbellsville University Louisville, KY

Masters of science Computer Science January 2023 May 2024

Texas A&M University College station, TX

Master of Science Computer Science and Engineering August 2020 December 2022

University of Houston Houston, TX

Bachelor of Science Computer Science January 2017 May 2020

SKILLS

Core Skills: Algorithms and Data Structures, Object Oriented Programming, Database management, DevOps

Programming: Python, C, C++, JAVA, R-studio

Database: Oracle, MySQL, DynamoDB

Tools: Git (Version Control), Python and Fast API, Docker, MS Excel, Jenkins, Docker, Kubernetes, Linux, AWS, EC2, ECS, ALB, Route53, EKS, DynamoDB, QuickSight, Azure, Maven, Gradle, Terraform, Postman, Ansible, Splunk, OP5, Grafana, OpenStack, DotCom, Prometheus, Elastic Kibana

AI: Machine Learning, Computer Vision

Languages: English, Telugu, Hindi

WORK EXPERIENCE

Comcast

DevOps Engineer July 2023 Present

Project 2 RDK Developer experience (DevX) tools squad: Jan 2024 - Present

Helped in Development of Lightspeed an internal AngularJS and Fast API application for RDK platform needs, as part of the RDK DevX tools squad from project inception.

Initially, I was mainly involved in building the Continuous Integration/Continuous Deployment process for this tool.

Concourse was our pipeline tool, used to build and deploy docker container images of our application onto AWS ECS.

Utilized Atlas hub as docker image repository, VinylDNS for private zone hoisting, terraform to define ECS task and task definition to fully deploy the image.

Our infrastructure involved GitHub repository, a concourse pipeline, ECS Fargate cluster, application load balancer, slack webhook for deployment notifications, terraform for deployment, S3 for terraform state storage, AWS QuickSight for various dashboards usage, DynamoDB and SharePoint for all data storage options, and finally elastic Kibana for application metrics and logging.

As part of this team, I was also involved in mitigations run for every RDK device, where we try to connect to these devices and run shell scripts that bring these devices out of issue state. This scripting majorly involved python Rest Api scripting to hit devices in an asynchronous fashion to scale up to hundreds and thousands at a time.

At a certain time, I was involved in building jump hosts that help engineers to be able to connect customer/testing devices to run various activities from testing to running scripts on them. This includes all infrastructure needs from building an Ubuntu ec2 instance to installing all the required modules and packages available both publicly and privately as some of these were comcast proprietary tools. This also includes user access management and privilege control.

Our mitigations mainly utilized Web PA service, to successfully connect to devices and execute TR-181 parameters. One such option was reverse SSH where we would be able to exec into RDK devices.

Comcast had a tenant security framework which allowed communication between different on-prem to cloud based application to establish inter-connectivity. This helps application to use each other s Rest APIs. I handled all such infrastructure activity for my team. This required tracking down the owners of such tenants, base knowledge of their infrastructure and raising access policies that would suit our needs.

As part of Lightspeeds visibility initiative, I was involved in building various QuickSight dashboards to be hosted on the application once built. This required aggregating datasets obtained from various sources like DynamoDB every day and storing it on s3 for QuickSight to pick up on a time-based refresh for various Dashboards.

One of my major tasks was an xPKI certificate injection mitigation run over several months on over 120k XB8 broadband devices that had a faulty manufacturing. Built a script using some internal tools to connect to these devices, copy over a binary file and run the mitigation that injects the cert. Required to build an automation at a later stage once a few test runs were successful and no issues were observed on these devices post injection.

Used an internal workflow platform (Gears) that helps us integrate various tools and scripts in various languages to build sev mitigation run on million devices in 30 mins scale. I was involved in building various such mitigation flows that affect various RDK devices (Broadband, Video and Camera).

Exposed to IAM role management and AWS cli command line to tool to interact with various AWS resources.

The team used scrum methodologies to maintain goals in a sprint-based process that included, sprint planning, backlog grooming and scrum calls and demo.

Project 1 Residential email: July 2023 Dec 2023

Queried many Splunk searches to build visual graphs and to monitor server statistics.

Monitor server and host metrics through Grafana, OP5, Nagios, Prometheus and DotCom.

Built dashboards and alerts on Grafana monitoring system to maintain server health.

Maintain production change releases for entire residential email infrastructure.

Developed pipelines on concourse to establish a streamlined build release and deploy cycles.

Developed and implemented ansible playbooks and ad-hoc commands to maintain Residential email infrastructure across 3 regions.

Built scripts and wrapper scripts to automate deployments on Python and alerts for Slack.

Built virtual server hosts using terraform build scripts.

Participated in software release and deployment activities managed under an agile software development approach.

Axle Informatics

Intern DevOps Engineer June 2023 July 2023

Contributed to design and architecture of automation solutions to deploy, monitor, scale, applications resiliency.

Built and automated provisioning and configuration of cloud-based IaaS, PaaS, and SaaS solutions

Focused on designing, developing, and implementing automation to support continuous integration and continuous delivery solutions (CI/CD)

Creates a standard approach and best practice to create and maintain automated test plans, test scripts, test suites, etc.

Worked with agile methodologies Kanban.

Cerebrone.ai

Intern DevOps Engineer Jan 2023 June 2023

Working on getting an AWS DevOps certification.

Worked on shell scripting using bin/bash and python.

Undergone training for Source control and Continuous Integration (CI)/Continuous Delivery (CD) pipelining using tools like GIT, Azure Repos, and Jenkins.

Worked with agile methodologies scrum stories and sprints.

Gained deep insights by working with tomcat9, nginx, IIS web server services.

Trained to get experience in Infrastructure as a code automation and scripting Terraform, AWS CloudFormation.

Experienced in using Jenkins, proficient in building CI/CD activities through a variety of scripted and declarative pipeline builds.

Gained knowledge in docker and docker swarm activities. Managing images, containers, persistent volumes etc., including docker orchestration tools.

Worked on ansible and ansible tower. Configuring and deploying chef, puppet for configuration management. Experienced in integrating version control systems like GitHub.

Texas A&M University August 2022 December 2022

Junior IT Assistant

Support for all University library computers through a process of design and implementation at Texas A&M University.

Worked on Windows deployment toolkit, setting up machines and infrastructure.

University of Houston January 2017 May 2020

Junior Systems Engineer

Support for the Center for Academic Support and Assessment (CASA) computer environment through a process of design and implementation at the University of Houston.

Benchmarking Computer systems, Testing, developing, and bug fixing Windows Operating system.

Worked on Windows deployment toolkit, setting up machines and infrastructure.

Worked on Linux systems which included scripting and running cron jobs for server maintenance.

RELEVANT PROJECTS

DevOps Practices Jan 2023 - Present

Working on getting an AWS DevOps certification.

Experienced in shell scripting using bin/bash and python.

Undergoing training for Source control and Continuous Integration (CI)/Continuous Delivery (CD) pipelining using tools like GIT, Azure Repos, and Jenkins.

Experienced with agile methodologies scrum stories and sprints.

Knowledgeable tomcat9, nginx, IIS web server services.

Knowledgeable experience in Infrastructure as a code automation and scripting Terraform, AWS CloudFormation.

Experienced in using Jenkins, proficient in building CI/CD activities through a variety of scripted and declarative pipeline builds.

Knowledgeable in docker and docker swarm activities. Managing images and containers including docker orchestration tools.

Experienced in ansible and ansible tower. Configuring and deploying chef, puppet for configuration management.

Experienced in integrating version control systems like GitHub.

Knowledge in networking OSI, DNS, TCP etc.

Knowledgeable in Kubernetes orchestration and clusters

Hosted a website with directory information (AWS DevOps) Jan 2023

Set up IAM credentials for user and created an admin account from root user and set up permissions using IAM roles for resources.

Built an EC2 instance inside a VPC with public (Internet Gateway) and private subnets.

Built DynamoDB and S3 inside private subnet and connected it to the web application.

Website holds directory information in DynamoDB and Picture images in S3 built using Python Flask.

Set up Elastic Load Balancer and auto scaling groups to scale the application in and out when required.

Digital image Processing May 2019

Worked on filtering, smoothing, and sharpening of the images on Python. Used OpenCV2 and NumPy libraries for advanced computations.

ATM Interface using Swing (JAVA) May 2017

Developed an interaction Swing advanced application interface for an Automated Teller Machine.

Created Username, password details for the user to be accessed.

This application also included various functions for deposit, transfer, and withdrawals of the specified amount.

This project is developed in a way such that it can handle exceptions and errors as well.

Sorting Datasets with Data structures Dec 2017

Reading data sets from a text file transferring them into data structures and sorting them.

Reads data from a text file cleans it out simultaneously stores them in specified data structures.

Reads the attribute which is needed to be sorted into an array and sorts it out.

Certifications

AWS Certified Cloud Practitioner Feb 2023

PCEP- Python certified Dec 2023

ACTIVITIES

Member of International Film Festival June 2017

Assisted with ticket distribution, hospitality, food, and condiments supply.

Youth Festival May 2016

Frequent volunteer at several youth events that helped improve my communication skills

Learning together Jan 2024 Nov 2024

As part of an employee career growth program, I was responsible for hosting learning together sessions that involve not just technical learning modules but also self-growth modules out of LinkedIn learning. These sessions help employees of multi-cultural backgrounds get along with each and also have better technical knowledge in fields they are not involved in every day.

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