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Chetan Shivashankar
Verified Expert in Engineering
Software Developer
Bengaluru, Karnataka, India
Toptal member since November 30, 2020
Bio
Chetan has over 12 years of experience in DevOps, working on critical production systems and systems at scale. He prefers working with technologies including IaC with Terraform and Ansible, logging stacks like EFK and ELK, and containerized systems like Docker and Kubernetes. He has recently been working on Kubernetes and managing huge production clusters.
Portfolio
Crossover/Trilogy (Freelance)
Terraform, Ansible, Docker, Kubernetes
Aptean
Amazon Web Services (AWS), Jenkins, Terraform, Ansible, Kubernetes, Docker
Oracle
Oracle Fusion Middleware, Make (formerly Integromat), Apache Maven, Linux
Experience
- DevOps - 12 years
- Linux - 12 years
- Amazon Web Services (AWS) - 4 years
- Jenkins - 4 years
- Ansible - 3 years
- Terraform - 3 years
- Kubernetes - 2 years
- Docker - 2 years
Work Experience
Senior Site Reliability Engineer
2019 - PRESENT
Crossover/Trilogy (Freelance)
- Managed critical production clusters at scale. Multiple production applications were deployed on the clusters.
- Worked on a tool that simplifies infrastructure provisioning with just YAML files. This helped to reduce the time to move into IaC from many days to a few hours.
- Provided Kubernetes cluster as a platform for deploying multiple products. Uptime was more than 99.9 for all the quarters to date.
- Developed a tool for tenant namespaces in Kubernetes. This helps users/service accounts to create, manage, and own only the namespaces created by it. This feature is not available in standard Kubernetes.
Technologies: Terraform, Ansible, Docker, Kubernetes
Senior Engineer
2016 - 2019
Aptean
- Migrated applications to AWS cloud from third-party data centers, which reduced cost by over 30% and added to the stability of the product.
- Containerized J2EE applications and moved the deployment to an immutable model.
- Led a team of four and managed critical trade-related products.
- Implemented MVP on indoor positioning system using Ultra-wide Band/IoT, which located objects within the accuracy of 30 CMS as part of Research Lab. The product was tested in one of the largest supermarket chain in Europe.
- Optimized deployment process from shell scripts and manual work to fully automated zero-downtime deployment.
Technologies: Amazon Web Services (AWS), Jenkins, Terraform, Ansible, Kubernetes, Docker
Senior Member Technical Staff
2012 - 2016
Oracle
- Automated deployment of applications using chef. This improved turnaround time and reliability.
- Streamlined the release engineering of the global release of products like Glassfish.
- Built patches and ported them to multiple operating systems like HP, Solaris, and Windows.
- Simplified the build process using Makefiles, Maven, and ant.
Technologies: Oracle Fusion Middleware, Make (formerly Integromat), Apache Maven, Linux
Member Technical Staff
2008 - 2012
Oracle
- Built patches and ported them to multiple operating systems like HP, Solaris, and Windows.
- Automated deployment of applications using chef. This improved turnaround time and reliability.
- Automation of environment creation and testing using DTE (in-house product).
Technologies: Build & Release Engineering, Apache Maven, Chef, Make (formerly Integromat), DevOps
Project History
Namespace Configurator
Created a tool to simulate virtual Kubernetes sub-clusters managed by tenants in a multi-tenant environment. Strict Isolation ensured that tenants could create objects or delete them in the namespaces only created by them. This reduced need to create multiple clusters and eased management of clusters. This feature is not yet implemented in the Kubernetes tree. The tool was achieved with a combination of custom controllers and validating webhooks.
Central IaC and Deployment Platform
No code approach for managing infrastructure provisioning and deployment with YAML files. The tool helps in provisioning infrastructure and manage the deployment to Kubernetes just by writing YAML files. This means the traditional approach of IaC and deployment with code is reduced from days to hours. I was part of the team that built the tool from scratch.
Containerize Apps with Docker and Kubernetes
Containerized applications running to EC2 instances and deployed them to Kubernetes. This initiative moved the infra from mutable to immutable and also made the process agile. Deployment and rollback of application time were reduced to seconds and improved reliability.
Education
2004 - 2008
Bachelor of Engineering Degree in Computer Science
RV College of Engineering - Bangalore, India
Skills
Tools
Terraform, Ansible, Jenkins, Make (formerly Integromat), Chef, Apache Maven
Paradigms
DevOps, Continuous Integration (CI), Continuous Delivery (CD)
Platforms
Linux, Kubernetes, Amazon Web Services (AWS), Docker
Languages
Go, Python 3
Other
Networking, Software Design, Oracle Fusion Middleware, Build & Release Engineering
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