David Der is an experienced Java Software Engineer currently serving as a Senior Full Stack Developer at Yettel.Hungary since 2025. Previously, they worked as a Full Stack Software Developer at Wonderline from 2019 to 2025, where they contributed to the Shellsmart and global Loyalty program system for Royal Dutch Shell. Earlier in their career, they were a Java Backend Developer at InCa Software from 2018 to 2019, focusing on Network Management Systems. David’s background includes expertise in generic and multithreaded programming, Angular, Spring Boot, PostgreSQL Database, and REST, and they are a graduate from Private teacher.
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