Senior Java Developer

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Beschreibung

Senior Java Developer – B2B Contract (Poland) Greenfield Trading Platform Role: Senior Java Developer Type: B2B Contract Rate: High‑end market rate Duration: Long‑term, multiple extensions expected Location: Warsaw (hybrid) Industry: Financial Services A leading financial institution is expanding its engineering capability in Poland as part of a major strategic platform build. This role has multiple headcount, offering long‑term stability, complex engineering challenges, and direct involvement in shaping a new enterprise‑wide system. Platform Overview You’ll be contributing to a greenfield platform that will sit between the UI layer and multiple backend systems across the bank. The first major use case is a consolidated trade blotter covering FX Cash, Options, Commodities and Interest Rates, with production launch targeted this year and ongoing feature expansion planned. Tech stack & direction: Java Spring Oracle Messaging layer: Kafka or Solace Microservices architecture Reactive programming patterns Role Overview You’ll work within the platform engineering function, contributing to backend services, messaging architecture, and integration patterns. The role is hands‑on, delivery‑focused, and suited to engineers who enjoy solving complex problems in high‑impact environments. Consultants Must Have: Core Java expertise - concurrency, collections, practical coding ability Messaging technologies ( Kafka or Solace ) Microservices & reactive programming Solution design around mess

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