Daniel Rusnak

Background

About Daniel Rusnak

Hello LinkedIn world! I am an IT generalist with a decade of experience in all key areas of software development, including frontend, backend, and DevOps. Currently, I am focused on building sustainable products and addressing scalability challenges. My experience spans a wide range of technologies, gained from working on large products across various business domains, including business intelligence, security/antivirus, telecommunications, and ERP/CRM enterprise and workflow systems. As a Full-Stack Software Engineer, I have experience working with microservice architecture and large monolithic applications on the backend (JVM languages), as well as developing significant single-page applications and small decoupled micro-frontends using JavaScript or TypeScript (AngularJS/Angular 2+, Vue.js, and Svelte). For automation tasks, I primarily use Python or Bash. In recent years, I have focused mainly on the DevOps domain, particularly in designing and scaling infrastructure, automation, and the design and implementation of technical processes. My DevOps experience includes- Managing cloud infrastructure (AWS, Azure and Private Cloud), Kubernetes clusters (EKS and AKS), and virtual machines (Proxmox), with numerous microservices and databases- Using provisioning tools and services such as Terraform/Terragrunt - Spacelift and Terraform Cloud; Ansible, and Puppet- Utilizing CI/CD tools like GitLab, Jenkins, TeamCity, and Rundeck- Working with monitoring and observability tools like Splunk, Grafana, Prometheus, and Jaeger Tracing.