Zoltan Polgar

I'm Zoltan Polgar, a highly experienced and versatile software developer with a strong track record of 13 years in the industry. Currently, I am serving as a Senior Software Developer at CareDx, where I leverage Spring, Docker, and Azure DevOps on a daily basis.

Throughout my career, I have gained valuable experience working on a diverse range of projects across multiple industries. I have a deep proficiency in utilizing a wide array of technologies such as Java, Scala, Docker, and Kubernetes. Additionally, I was involved in multiple projects centered around Java and web technologies, further expanding my skills in these areas.

I consider myself lucky, because during my professional career I had a chance to work in various areas, such as insurance, architecture, finance, chemistry, e-mobility. I try to focus on problems instead of specific technology, so most of the time I'm happy to learn new tools, if I feel they are necessary for solving a task. Apart from Java I've worked with many programming languages such as Scala, Kotlin, Python, PHP, Perl, JavaScript. I also have notable experience with Android related technologies and I have a keen interest in Linux and its ecosystem, so during my free time I always have some idea for a pet project.

- Developing and designing RESTful services using Spring Boot
- Developing custom JUnit5 extensions
- Creating and maintaining Azure DevOps pipelines
- Working with SQLite data models
- Maintaining virtual machines running in Azure
- Performing application releases and deployments
- Suggesting internal process improvements
- Suggesting legacy system migration strategies
- Using Azure DevOps to report problems and document defects
- Occasionally working with Typescript and Angular

- Developed and designed RESTful services using Spring Boot
- Created containers in Docker
- CreatCreated and maintained GitLab pipelines
- Worked with MySQL and MSSQL data models
- Performed application releases and deployments
- Created CD process to include support building of Docker Images and publish into Amazon ECR
- Created a staging environment from scratch using GitLab pipelines, watchtower and Amazon EC2
- Designed solution architectures and suggested internal process improvements
- Suggested legacy system migration strategies
- Used Jira and Confluence for reporting problems and document defects

- Developed and designed RESTful services using Spring Boot
- Managed Kubernetes charts using Helm
- Created reproducible builds of the Kubernetes applications, managed Kubernetes manifest files and Managed releases of Helm packages
- Created and maintained Jenkins pipelines and shared libraries
- Created CD process to include support building of Docker Images and publish into a private repository
- Created Containers in Docker
- Designed solution architectures and suggested internal process improvements
- Wrote automated performance tests using JMeter
- Worked on Cassandra Data modelling, NoSQL Architecture
- Maintained Scala codebase
- Designed and developed a chatbot application using the Messenger Platform
- Involved in migrating data from MySQL to PostgreSQL

- Developed client slide components utilizing Java Swing framework
- Developed screen flows and new window layouts
- Participated in process designing and strategic communication development
- Supported clients in forum and calls
- Developed Slack integration
- Improved CI/CD Jenkins pipeline companywide
- Planned and executed several refactoring on a legacy codebase
- Wrote automated test using BDD framework Cucumber and Gherkin
- Researched new possible ways to test the application

- Developed new applications and added functionality to existing applications using Apache Camel, Apache ActiveMQ and Spring Boot technologies
- Used Jira to document defects and report problems
- Developed UIs with PhoneGap, Angular, JavaScript, HTML and CSS
- Developed Java modules with Agile and other standard methodologies
- Developed UI components with Eclipse RCP
- Create and execute test cases in JUnit for unit testing of application
- Supported new colleagues onsite

- Utilized object-oriented programming and Java for creating business logic
- Developed desktop application written in SWT and JFace
- Implemented multi threading and exception handling to improve application functionality
- Developed UIs with GWT, JavaScript, HTML and CSS
- Developed testing framework written is Perl

- Developed insurance premium calculation engines in PHP
- Utilised programming capabilities in PHP, SQL and Javascript and other libraries as needed
- Developed UIs with JavaScript, HTML and CSS
- Create and execute test cases in SoapUI