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Senior Backend Engineer (Node.js/TypeScript)

Freelancehybrid7-9 months5+ yrs📍 Stockholm Metropolitan Area, Sweden, 🇸🇪 Sweden🗣 English

Senior backend engineer for financial data platform using Node.js and OpenSearch.

Build and optimize a high-performance API serving market data to investment channels, with OpenSearch handling complex queries and aggregations. You'll design indexing strategies, develop data pipelines, and apply test-driven development in daily release cycles. This role requires deep expertise in data-intensive systems, search platforms, and financial markets knowledge, working within an agile team in Stockholm.

Tech stack
Node.jsTypeScriptOpenSearchElasticsearch
Rate
Not stated by the agency
via

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Found at a specialist agency · listed 25 August 2026 · InsideJobs links you to the original posting.