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Mid-Level Backend Developer

Freelancehybrid10-12 months3–5 yrs📍 Sweden, 🇸🇪 Sweden🗣 English

Mid-level backend engineer for financial decisioning platform in Stockholm.

Develop and optimize a real-time scoring and ranking service for a banking client, focusing on latency, reliability, and correctness under load. You'll work with distributed systems, tuning decision logic and building resilient infrastructure. Requires 4–5 years of backend experience with Java and Spring Boot, plus familiarity with event streaming and observability patterns. Based in Stockholm with 2–3 office days per week.

Tech stack
JavaSpring BootKafkaAvroGradle
Rate
Not stated by the agency
via

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Found at a specialist agency · listed 29 August 2026 · InsideJobs links you to the original posting.