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Full Stack Software Engineer

Harvey Nash Poland — Poland · Posted ~1 day ago

Senior Full-time Hybrid

Skills

C# .NET .NET Core React TypeScript JavaScript REST APIs Full-stack development Large-scale data processing Debugging Production support

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Summary

A technology team is hiring a Full Stack Software Engineer to build and modernize data-intensive applications. You will develop backend services and APIs with C# and .NET, create responsive interfaces with React and TypeScript, and improve application performance, monitoring, and reliability. Strong commercial full-stack experience and the ability to work independently across the development lifecycle are required.

Highlights

Permanent hybrid role with competitive compensation, working across modern full-stack technologies on data-intensive applications. The position offers broad ownership from development through production reliability and performance improvement.

Description

Location: Warsaw, hybrid (3 days on site) Contract Type: Permanent / Umowa o pracę na czas nieokreślony Rate: up to 30000zł gross/month What you’ll do: Build and maintain full-stack applications for financial data and analyticsDevelop backend services and APIs using C#/.NETCreate responsive React and TypeScript interfaces for complex datasetsModernise existing applications while supporting reliable production systemsWork closely with business and technology teams to turn requirements into solutionsImprove application performance, monitoring, and reliabilityWhat you bring: Strong commercial experience with C#/.NET and .NET CoreFull-stack development experience across backend and frontendHands-on React, TypeScript, JavaScript, and REST API experienceExperience working with large datasets and data-heavy applicationsStrong debugging and production support skillsAbility to work independently across the full development lifecycleNice to know: Experience with financial or investment-related applicationsF# knowledgeExperience with ag-grid or HighchartsBackground modernising legacy .NET applicationsStrong interest in architecture and user experienceIf you’re a full-stack engineer who enjoys combining modern technology with complex financial applications, let’s connect.