Senior .NET Fullstack Developer

Senior .NET Fullstack Developer About the role: We are Optiveum, and we are currently looking for a Senior .NET Fullstack Developer to join the team of our client—a global, research-driven organization. In this setup, Optiveum acts as the recruitment and contracting party, meaning you will sign the B2B cooperation agreement directly with us. Key Details: • Location: 100% Remote (Based in Poland / Warsaw) • Rate: Up to 36 EUR/h • Mode of work: Full-time (40 hours/week) • Language requirement: English (Fluent) What you will be doing: • Developing, maintaining, and improving business-critical full-stack applications. • Modernizing legacy applications and migrating solutions to current versions of .NET. • Working seamlessly across all application layers, including UI, backend services, APIs, and data sources. • Designing and implementing new functionalities that support the registration of new molecules and other research entities. • Establishing and improving Azure infrastructure for both modernized and existing applications. • Creating and maintaining CI/CD pipelines using GitHub Actions. • Improving engineering quality through automated testing, code reviews, secure development practices, observability, and comprehensive documentation. • Supporting applications throughout their lifecycle, balancing maintenance, operational stability, technical debt reduction, and new development. What we are looking for: • Several years of senior-level professional experience in full-stack software development. • Strong, hands-on experience with C# and .NET, including maintaining existing solutions and upgrading/migrating legacy applications to newer versions. • Practical knowledge of Oracle databases, SQL, data access, and integration between applications and database platforms. • Hands-on experience with Azure cloud services and CI/CD pipelines (preferably GitHub Actions). • A broad understanding of software architecture, APIs, application security, testing, and deployment. • A self-driven working style with the confidence to take full ownership of tasks and solutions. • Fluent English communication skills. Does this sound like a match? Apply today! Originally posted on Himalayas Full-Stack-Developer, .NET-Developer, C++-Developer, Backend-Engineer, Software-Developer, Senior-.NET-Full-Stack-Developer, Senior-.NET-Full-Stack-Engineer, Senior-Full-Stack-Engineer-(.NET-C#-SQL), Senior-Full-Stack-Engineer-(.NET-React), Senior-Full-Stack-Engineer-(.NET-Angular), Senior-Fullstack-Developer, Full-Stack-.NET-Developer, .NET-Full-Stack-Developer, Senior-Full-Stack-Development