Peter Posypanka

Experienced Java Developer with master's degree in Computer Science, interested in object-oriented development and challenges to solve. Used to work as a part of team and individually. Able to act under the pressure. Task oriented and always looking forward to learning new technologies. An Individual who often seeks opportunities to solve various logical problems both as work and a hobby. Considering the development a constant opportunity to improve knowledge and skills.

Graduate C++ Developer - Sapiens

(2014-08 - 2015-11)

Maintenance of functional financial system by fixing defects and creating new functionality as requested. Work using C++ for system, exposure to Java and Vaadin for web solutions and Python and PLSQL for database related operations.

Junior Java Developer - TrakCel

(2015-12 - 2017-05)

Development of fast growing system for orchestration of cell treatment therapies to deliver highly flexible and scalable solution. Utilization of Java, Spring, REST, Hibernate, PostgreSQL, JavaScript, Sencha ExtJS, Activiti BPMN, Aparche Camel, RabbitMQ, Docker, Jackson and other frameworks and tools.

Java Developer - TrakCel

(2017-06 - 2021-01)

Development of fast growing system for orchestration of cell treatment therapies to deliver highly flexible and scalable solution. Utilization of Java, Spring, REST, Hibernate, PostgreSQL, JavaScript, Sencha ExtJS, Activiti BPMN, Aparche Camel, RabbitMQ, Docker, Jackson and other frameworks and tools.

• Work in Agile environment. Helped introduced security restrictions on existing project by developing internal security tool in Python and basic performance tracking tool with use of AspectJ.
• Supervised introduction of few starting colleagues and initiated active exchange of knowledge between teams on few occasions.
• Contributed to design of core internal mechanisms to support both needs of internal application and third party integrations.
• Worked on development of android and web application.

Java Software Developer - Legal & General

(2021-01 - 2021-09)

Involvement in development of reporting features using Java micro-services with utilization of Quarkus, Openshift, Apache Camel, Angular, Karma, Jasmine and Postgres.

Software Engineer (Java)

(2021-09 - 2022-11)

Work on payment system integrations with acquirers that had been used in cloud based micro-service environment utilizing multiple programming languages. Developed improvements to internal mechanisms, more optimized use of database and overall line up to meet the requirements of external interfaces.

• Involved in continuous development of shared functionality across multiple projects with internal library, helped with improvements to logging and other enhancements.
• Experienced benefits of leveraging Claude AI to enhance results and performance.
• Had utilized manual testing with test payment cards, unit testing with use of JUnit and integration testing with Postman tool.
• Exposed to Java, JPOS, Hibernate, Spring, MSSQL, Azure services, Kubernetes and other technologies.

Senior Software Engineer (Java)

(2022-11)

Work on payment system integrations with acquirers that had been used in cloud based micro-service environment utilizing multiple programming languages. Developed improvements to internal mechanisms, more optimized use of database and overall line up to meet the requirements of external interfaces.

• Involved in continuous development of shared functionality across multiple projects with internal library, helped with improvements to logging and other enhancements.
• Experienced benefits of leveraging Claude AI to enhance results and performance.
• Had utilized manual testing with test payment cards, unit testing with use of JUnit and integration testing with Postman tool.
• Exposed to Java, JPOS, Hibernate, Spring, MSSQL, Azure services, Kubernetes and other technologies.

Master's Degree - Informatics (equivalent of Computer Science) - Technical University of Kosice (Slovakia) (2012 - 2014)

Bachelor's Degree - Informatics (equivalent of Computer Science) - Technical University of Kosice (Slovakia) (2009 - 2012)

High School - High school of electrical engineering in Michalovce (2005 - 2009)