Summary
Overview
Work History
Education
Skills
Accomplishments
Timeline
Generic

Sambi Mandala

Reston

Summary

Around 8 Years of experience in the IT industry comprising of Software Configuration Management (SCM) and Linux Systems Administration. Experience includes DevOps, Build/Release Management and Cloud Management.

  • Experience in working on DevOps/Agile operations process and tools area (Code review, unit test automation, Build & Release automation, Environment, Service, Incident and Change Management).
  • Implemented AWS solutions using EC2, S3, RDS, EBS, IAM, SNS, SQS, Route 53, Elastic Load Balancer, Cloud Watch, VPC, ACL, Cloud Formation, Cloud Front, Auto scaling groups.
  • Experience in build and release automation of Go, Java and Web based applications.
  • Extensive experience in creating Kubernetes clusters, configuring deployments, managing storage needs with persistent volumes, and automating deployment processes. Further demonstrated proficiency in segregating cluster resources through Kubernetes namespaces, ensuring optimal resource allocation and isolation.
  • Strong hands on development and configuration experience with software provisioning tools like Ansible/Chef.
  • Writing AWS Terraform templates for any automation requirements in AWS services.
  • Provisioning AWS/Openstack through Infrastructure as code. Push button deployment of new environments and version control of existing systems – Terraform
  • Experience in AWS AMI, which included managing application and creating Windows and Linux EC2 instances.
  • Using Docker to implement a high level API to provide lightweight containers that run processes isolation.
  • Worked on creation of custom Docker container images, tagging and pushing the images to the repo.
  • Extensive experience in using Ansible for managing deployments in large number of servers.
  • Written Ansible Plays and Playbooks for zero-downtime installation, upgrading and uninstalling of various processes.
  • Experience with CI (Continuous Integration) and CD (Continuous Deployment) methodologies using Jenkins and Concourse.
  • Integrated Checkmarx and WhiteSource security scans into the Concourse CI/CD pipeline across all projects, strengthening the organization's cybersecurity framework. This integration automated the detection of potential vulnerabilities, leading to timely remediation and significantly improved the overall security posture.
  • Experience in using Version Control Tools like Git and SVN.
  • Strong experience in creating Concourse CI pipelines and used Concourse to automate most of the build related tasks.
  • Comfortable and flexible with working UNIX and Windows flavors.
  • Troubleshoot Build and Deployment Issues, with little downtime.
  • Strong Experience in creating Grafana dashboards using Prometheus, Athena, Redshift, Cassandra, AWS Cloud watch and InfluxDB as datasource.
  • Having experience in using Prometheus as primary monitoring tool and creating alarms using Prometheus Alert Manager.
  • Designed and implemented automation deployment using to promote major releases, monthly releases, and patches from Development -> Integration/QA -> Staging/UAT -> Production.
  • Open to learning and implement new technologies and tools.
  • Experience with Monitoring, Debugging, Profiling, and Memory analysis in Go, Java applications and environments.
  • Demonstrated a high level of enthusiasm and a 'can-do' attitude in all initiatives, comfortably tackling challenging project areas and providing valuable feedback to leadership. This proactive approach, combined with a consistent record of high-quality performance and strong ownership, has significantly contributed to the overall success of multiple projects and initiatives.

Overview

8
8
years of professional experience
5
5
years of post-secondary education

Work History

Product Development Engineer

Comcast
01.2021 - Current
  • Led efforts primarily in DevOps, supporting larger initiatives and projects.
  • Providing a logical solution to showcase Business KPI data in grafana dashboard by leveraging on multi datsources like postgres, influxdb, cassandra, redshift, athena, aws cloud watch and prometheus, also contributing ideas to dev on how to showcase incidents to make operations life easier and helping on production deployment.
  • Consistently served as the Subject Matter Expert (SME) for CI-CD, Metrics/Monitoring infrastructure, Security/Test Automation, and certain back office components.
  • Played a pivotal role in integrating Prometheus with Grafana, facilitating the development of dynamic dashboards for tracking key performance metrics in real-time. My leadership in this area has streamlined monitoring processes and improved operational efficiency across the organization.
  • Involved in the creating the configuration and deployment of Prometheus, establishing a robust, scalable monitoring system that has significantly improved incident response times and overall system reliability.
  • Contributed to System Integration Testing (SIT) integration and enhancement of CI/CD processes.
  • Provided daily support for development, QE, and operations teams.
  • Successfully completed CI/CD for SIT, developed a framework for reporting and alert integration of SIT, coordinating closely with QA and Dev counterparts.
  • Transitioned CI/CD from earlier stable branch approach to an main branch approach, significantly enhancing the project flow.
  • Worked closely with the development teams to incorporate security scans into the CI/CD pipeline, promoting a culture of security-first in software development.
  • Successfully spearheaded the integration of Checkmarx and WhiteSource security scans into Concourse pipelines, ensuring continuous security and compliance checks across all organizational projects.
  • Initiated exploratory work for containerizing product cloud components.
  • Leveraged extensive knowledge in creating Kubernetes (K8s) clusters and successfully migrated few services from EC2 cloud instances to the K8s cluster.
  • Automated the deployment, scaling, and management of application containers across clusters, which improved efficiency and reduced operational costs.
  • Leveraged Helm for package deployment, making it easier to manage Kubernetes applications.
  • Improved product back office availability and operational excellence.
  • Coordinated closely with Operations team, driving and transitioning operational functions kept under Engineering.
  • Successfully delivered Versa upgrades as a part of a larger effort, building a CD pipeline for VERSA upgrades and also working towards Ubuntu 18.04 upgrade automation.
  • Acted as a reliable team player, providing support to team members in his expert area, including lab week and Grafana real time dashboards.
  • Took on the end-to-end ownership of the Github Enterprise Cloud (GHEC) migration strategy and has been driving the effort effectively.

DevOps & Cloud Engineer

Infosys Limited
12.2019 - Current
  • As part of DevOps role in team, my role includes release management, Environment Management, deployments, Continuous integration, continuous deployment, Incident management, version management.
  • Monitored automated build and continuous software integration process to drive build/release failure resolution.
  • Reached working prototype stage of development quickly due to insight into user needs and requirements.
  • Providing a better workflow for Continuous Integration and Continuous Delivery.
  • Actively involved in architecture of DevOps platform and Cloud solutions.
  • Provisioning AWS through Infrastructure as code.
  • Worked with Terraform scripts for instance provisioning, configuration management.
  • Creating Prometheus, op5, CloudWatch alerts for instances and using them in Auto scaling launch configurations.
  • Good experience on Networking in AWS, VPC and Data center to Cloud Connectivity, Security Groups, Route Tables and ACL's in AWS.
  • Extensive experience in using Ansible for managing deployments in large number of servers.
  • Hands on experience in writing Ansible Playbooks and managing the Roles as well.
  • Written Ansible Playbooks for zero-downtime installation, upgrading and uninstalling of various processes.
  • Set up Continuous Integration and Continuous Deployment for major releases in Concourse and running multiple builds at a time.
  • Automating the tasks using Ansible playbooks, Shell scripting and Python.
  • Migrating servers with the required configurations changes and testing and deploying the machines using Ansible commands.
  • Created various modules and Manifests in Ansible to automate various applications
  • Created different dashboards for build monitoring, load service monitoring, cloud monitoring using Grafana and Prometheus.
  • Drove operational improvements which resulted in savings of project Budget
  • Environment: GIT, Ansible, Docker, Jenkins, Apache Webserver, JIRA, Windows, Python, BASH, AWS, Chef, MS SQL, Prometheus, Grafana, Java.

Devops & Cloud Engineer

Vaspire Technologies
03.2018 - 12.2019
  • Created the automated build and deployment process for application, re-engineering setup for better user experience, and leading up to building a continuous integration system.
  • Worked closely with software development and testing team members to design and develop robust solutions to meet client requirements for functionality, scalability and performance.
  • Researched and identified new technologies and tools helping to grow agile development environment.
  • Gathered data pipeline metrics in Prometheus as time series data and developed Grafana dashboards for alerting and monitoring on the slack/email.
  • Designed the Release Plans while coordinating with Stake Holders including Project Management Lead,, Team Lead.
  • Performed Branching, Tagging, Release Activities on Version Control Tools: GIT for new Commits in Jenkins.
  • Set up CI (Continuous Integration) for major releases in Jenkins and running multiple builds at a time.
  • Setting up Jenkins master, adding the necessary plugins and adding more slaves to support scalability and agility.
  • Install the application on AWS EC2 instances and also configured the storage on S3 buckets
  • Implemented BASH scripting to automate day to day job tasks.
  • Providing automated solution using Python scripts.
  • Responsible to maintain semi-annual upgrade life cycle for all the software and tools.
  • Performed and deployed Builds for various Environments like QA, Integration, UAT and Productions Environments.
  • Collaborated closely with product development teams and other stakeholders, using effective communication and active listening skills.
  • Environment: GIT, Ansible, Docker, Jenkins, Apache Webserver, HAProxy, JIRA, Windows, Python, BASH, AWS, Chef, MS SQL, Prometheus, Grafana, Java.

Linux Admin/Build & Release Engineer

Smart Works
03.2017 - 03.2018
  • Part of a team whose primary goal is to implement Release/Build as a practice across the Organization covering around 30 projects.
  • My Responsibilities include Searching, Learning and Documenting on new DevOps tools which would fit in our current Eco-System.
  • Have done various POCs to explain and demonstrate the possibility of implementing CI/CD in various projects.
  • Poll the SCM for new Commits.
  • (SCM- TFS, SVN etc.) •Installation, Maintenance, Administration and troubleshooting of Red hat Enterprise Linux servers on various hardware platforms.
  • Configured, and maintained Apache web server from open source with Java and Tomcat.
  • As member of Release Engineering group, redefined processes and implemented tools for software builds, patch creation, source control, and release tracking and reporting, on UNIX platform.
  • Installed and configured Jenkins for Automating Deployments and providing an automation solution.
  • Integrated GIT into Jenkins to automate the code check-out process.
  • Used Jenkins for automating Builds and Automating Deployments.
  • Designing the automation process and building workday integrations.
  • Practice developing classes, programs and various artifacts to implement Business logic •Maintain and track inventory using Jenkins and set alerts when the servers are full and need attention.
  • Integration of Puppet with Apache and developed load testing and monitoring suites in Python.
  • Automating the regular tasks in Subversion and streamlining the process of access to SVN.
  • Environment: UNIX, Jenkins, Windows, Tomcat, Subversion, GIT, ANT, MAVEN, Jira, Python, Test Manager.

Education

Masters - Computer Science

University of Central Missouri
Warrensburg, MO
08.2015 - 12.2016

Bachelors of Technology - Electronics and Communication Engineering

Gitam University
06.2011 - 05.2015

Skills

Culture Transformation

DevOps principles

GitHub, SVN

Couchbase, Cockroach Cassandra, MySQL, Postgres, AWS RDS

AWS ( EC2, S3, ELB, EBS, IAM, VPC, RDS, SNS, SQS, Glacier, Route53, Cloud

Scripting: Bash, Python, Ruby

Monitoring: Prometheus, Grafana, op5, Cloudwatch

Terraform

Automation

Jenkins, Concourse

Ansible, Chef

JIRA

Product development

Accomplishments

- Migrating all CICD projects from Jenkins to Concourse as part of Comcast initiative

- Concourse Build Timing Improvement

- Supporting comcast Dev team to automate github release process

- pivotal role in integrating Prometheus with Grafana, facilitating the development of dynamic dashboards for tracking key performance metrics in real-time

- Enhanced the organization's software security measures by automating vulnerability detection, which reduced potential risks and threats.

- Kudos from Comcast director on SIT integration with CICD

Timeline

Product Development Engineer

Comcast
01.2021 - Current

DevOps & Cloud Engineer

Infosys Limited
12.2019 - Current

Devops & Cloud Engineer

Vaspire Technologies
03.2018 - 12.2019

Linux Admin/Build & Release Engineer

Smart Works
03.2017 - 03.2018

Masters - Computer Science

University of Central Missouri
08.2015 - 12.2016

Bachelors of Technology - Electronics and Communication Engineering

Gitam University
06.2011 - 05.2015
Sambi Mandala