Senior Java Developer - London / Fully Remote - Contract or Perm | ~£500/day (Outside IR35) or £90k + Equity - We're looking for an experienced Java developer (5+ years) with deep expertise in concurrency and performance tuning, and hands-on exposure to distributed systems, Python, AI and machine learning. The stack includes modern Java (Vert.x), Kafka, Flink, ScyllaDB, and Python for ML integration. Java, AdTech, Vert.x, Kafka, Flink, ScyllaDB, Python, AI/ML, Distributed Systems, Real-Time, Low-Latency, High-Availability, Backend, Remote, London - We're partnering with a well-funded AdTech startup developing high-performance, real-time distributed systems with integrated machine learning components. You'll join a small, elite engineering team responsible for designing and optimising backend services
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