Java Software Engineer

Hello Network, Digisourced is acting as an Employment Business in relation to this vacancy. I came across your profile and was impressed by your strong production background in back-end Java engineering, particularly with low-level concurrency, memory optimization, and distributed systems at scale. We are shortlisting an experienced Backend Java Engineer to join an autonomous engineering team in Malmö building privacy-critical services used by millions globally. Assignment Details & Setup: Location: Malmö, Sweden (100% On-site, 5 days/week).Schedule Note: Flexibility required for international collaboration meetings ~2 evenings/week.Start / Duration: November 16, 2026 – April 30, 2027 (Long-term, renewable assignment).Workload: 100% (Full-time). Core Technical Focus & Responsibilities: Design, build, and operate high-throughput Java services with Netty, virtual threads/reactive models, and java.util.concurrent.Debug complex concurrency, memory allocation, and performance bottlenecks under load.Work with distributed data stores and caching (Cassandra, Redis, Memcached).Own end-to-end service delivery from architecture/design through production operations. Key Requirements: 5+ years of production experience in back-end Java engineering.Deep understanding of JVM memory models, GC, virtual threads, and distributed system consistency/failure modes.Strong experience with REST, Netty, authentication/authorization, and security at scale.Fluent English (written & spoken). If you are interested, or you know someone that could be, please reach out and we can arrange a time to speak soon?