Ernestas Lukoševičius

I was the sole DevOps engineer creating cloud infrastructure. I bootstrapped Kubernetes on AWS using Kops and EKS for more than seven Kubernetes clusters. I also created and managed a few AKS clusters.

I managed everything with Terraform and taught developers to use Terraform. I invited project managers to take part in developing their application infrastructure. I moved Node.js, Java, Ruby on Rails, Go, and PHP applications onto Docker.

I streamlined CI pipelines to make every change automated and tracked. At SameSystem, I improved build times from four hours to 15 minutes. Time to deploy from 15 minutes to less than two minutes. I wrote a chatbot/webhook handler in Go to help with automating mundane tasks (e.g., requesting reviews, approving PRs before it was possible with existing tools, and triggering deploys).

I managed Jenkins pipelines with a mix of Bitbucket and GitHub organization plugins, declarative pipelines, and Job DSL. Deployed and configured Jenkins with a Jenkins operator on Kubernetes. Spent most of the time with Maven, Ruby, PHP, and Node pipelines. Finally, I made sure that developers would participate in CI.

I assisted companies in passing multiple security audits before fundraising. I did that by both enforcing policies and training everyone to adjust to the new processes. I ensured proper AWS security practices are enforced, such as in-transit and at-rest encryption, reduced application and developer permissions to the bare minimum needed, and enforced MFA and Cloudtrail logs.

Migrated CloudFormation deployments from AWS Managed Services which were using CloudFormation over Terraform. I managed the Terraform configuration with custom modules as well as Terragrunt. I migrated some Lambda deployments from CloudFormation and Serverless over to Terraform with Terragrunt.