Senior Full-Stack .NET Developer

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Senior Full-Stack .NET Developer About the Offer We are currently looking for a Senior Full-Stack .NET Developer to join the team of our client, a European Union institution based in Warsaw . You will design, develop and support enterprise web applications built on .NET and React , from translating business requirements into technical solutions through to deployment, release management and 3rd-line production support. For this role, Optiveum is the recruitment partner, and the cooperation agreement will be signed directly with our contracting partner. Key Details: Rate: up to 32 EUR/h net (B2B) Work Model: on-site/near-site in Warsaw, full-time (40 h/week) Location: Warsaw Important: EU citizenship is required for this role Responsibilities Designing, developing and maintaining enterprise web applications Building and supporting solutions in .NET (C#, ASP.NET Core) and React (TypeScript) Translating business requirements into technical solutions Taking part in testing, deployment, release management and production support Optimising application performance, security and quality Producing technical documentation and providing 3rd-line support Requirements EU citizenship 6+ years of IT experience, including 3+ years in a similar development role Strong experience with .NET 8 / .NET Core, C# and ASP.NET Core React and TypeScript on the front end Entity Framework and SQL Server Azure DevOps pipelines Experience with OpenShift / containers Knowledge of SAML 2.0 / Entra ID authen

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