Mirnes Omerkic

My team and I delivered a custom reporting solution consisting of several database tiers like MongoDB, PostgreSQL, PostGIS, and 15+ services (Java application in microservices architecture). As the DevOps engineer on this project, I managed the build, deployment, pipeline release automation, CI/CD with self-managed Jenkins and GitHub Enterprise, on-premises infrastructure with SaltStack, and monitoring HA within the site and disaster recovery site. I also worked closely with QA, helping them automate testing pipelines.

My team developed a custom alerting solution for monitoring remote sensors. The application was written in Java, consisting of several tiers, a database, message queue, back end and front end, and integration with external systems like telemetry collectors and databases. I provisioned the entire infrastructure for this project on Azure and ensured integration with external tools. For CI/CD purposes, I set up pipelines on Azure DevOps, which eased our development flow: deployment, releases, pull-request checks, static code analysis with SonarQube, and testing. All workloads in multiple environments development, staging, and production were run on Azure Kubernetes Service (AKS).

Caparol manufactures adhesives used in construction. My role on the project was to develop a PLC software, which controls all the plant electro-mechanical components.
During the development process, I set up an entire development environment consisting of custom electronics/hardware to emulate manufacturing plants. This allowed me detailed testing of PLC software before we rolled it out to production. Later, I developed a reporting solution for them consisting of a back-end service (written in Ruby), which monitors PLC and stores metrics into a PostgreSQL database, and UI (written in Ruby/Sinatra) representing data from a database in several dashboards. I also dockerized, set up, and deployed a reporting stack onto DigitalOcean.