Janos Haber
Senior Java Developer at T-Systems Hungary Ltd.
Hungary
Summary
🤩
Rockstar🎓
Top SchoolJanos Haber is a Senior Java Developer with 14 years of hands-on experience delivering back-end systems using Spring, Apache Camel and Java EE, currently contributing at T-Systems Hungary. He runs his own company, Fine Solution Kft, where he combined executive management with hands-on Java and Scala development for telecom and billing projects, demonstrating both technical depth and product ownership. His background spans JVM and polyglot back-ends—Scala/Spark big-data work, Ruby admin interfaces, and earlier PHP/Flash experience—giving him a broad perspective on integration and legacy modernization. An active contributor to the well-known Apache Fineract project, he focuses on code quality and robustness, fixing null-pointer issues and improving DB and API filtering paths for credit bureau integrations. Colleagues rely on him for pragmatic solutions that reduce runtime errors and streamline data flows between services. Based in Hungary, he pairs enterprise-grade engineering with an entrepreneurial mindset cultivated by years of client-facing and project-led work.
14 years of coding experience
13 years of employment as a software developer
Hevesy György Műszaki Szakközépiskola
English, Hungarian
Github Skills (12)
javas10
java10
testing10
apidoc9
spring-boot9
api9
finance8
postgresql8
bank7
database-design7
banking7
fintech7
Programming languages (10)
Github contributions (5)
apache/fineract
Nov 2022 - Jan 2023
Apache Fineract
Role in this project:
Back-end Developer
Back-end DeveloperContributions:34 reviews, 16 commits, 66 PRs in 2 months
Contributions summary:Janos primarily focused on fixing potential null pointer exceptions and other minor bug fixes within the Apache Fineract codebase. Their contributions span across multiple files, including test files, indicating a focus on code quality and preventing runtime errors. The user also touched upon database interactions and API filtering mechanisms, demonstrating an understanding of the back-end architecture. They addressed issues related to credit bureau integrations, demonstrating familiarity with data processing and potentially API integrations with external services.
javafineractapache
b0c1/fineract
Nov 2022 - Sep 2023
Apache Fineract
Contributions:335 pushes, 62 branches, 7 tags in 10 months
javafineractapache
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