Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Viktor Kanisz, a Java back-end software engineer with experience across national security, healthcare, and finance domains. I enjoy collaborating with international teams to deliver maintainable backend systems using Java, Spring, and microservices. I’m passionate about open-source software and developing personal projects, and I continually explore new technologies to improve performance, reliability, and developer experience.…Hi, I’m Viktor Kanisz, a Java back-end software engineer with experience across national security, healthcare, and finance domains. I enjoy collaborating with international teams to deliver maintainable backend systems using Java, Spring, and microservices. I’m passionate about open-source software and developing personal projects, and I continually explore new technologies to improve performance, reliability, and developer experience.

Viktor Kanisz

Back-End Developer, Full Stack Developer, Web Developer, +2





Hi, I’m Viktor Kanisz, a Java back-end software engineer with experience across national security, healthcare, and finance domains. I enjoy collaborating with international teams to deliver maintainable backend systems using Java, Spring, and microservices. I’m passionate about open-source software and developing personal projects, and I continually explore new technologies to improve performance, reliability, and developer experience.…Hi, I’m Viktor Kanisz, a Java back-end software engineer with experience across national security, healthcare, and finance domains. I enjoy collaborating with international teams to deliver maintainable backend systems using Java, Spring, and microservices. I’m passionate about open-source software and developing personal projects, and I continually explore new technologies to improve performance, reliability, and developer experience.

Available to hire

Hi, I’m Viktor Kanisz, a Java back-end software engineer with experience across national security, healthcare, and finance domains. I enjoy collaborating with international teams to deliver maintainable backend systems using Java, Spring, and microservices.

I’m passionate about open-source software and developing personal projects, and I continually explore new technologies to improve performance, reliability, and developer experience.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

German

Beginner

Hungarian

Fluent

Work Experience

Java Back-End Software Engineer at EPAM Systems

August 1, 2024 - February 1, 2026

Developed and maintained backend features using Java and Spring. Independently identified bugs during day-to-day work, proposed solutions, and implemented fixes. Identified hard-to-find defects, including race conditions, through in-depth code analysis. Improved response times in high-traffic modules by optimizing SQL queries and backend code. Refactored components to improve maintainability and reduce technical debt.

Java Full-Stack Software Engineer at ASH Szoftverház Kft

February 1, 2021 - June 1, 2024

Implemented end-to-end features using Spring Boot and Angular. Led modernization of a legacy codebase and implemented new features. Improved the performance of a key algorithm through structural optimizations. Explored and integrated technologies, such as MapStruct and ng-openapi-gen. Contributed to the centralized commons module, used across multiple projects.