Senior .NET Fullstack Developer
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Job Description
Senior .NET developer modernizing research applications for Optiveum’s global client. Building full-stack solutions with C#, Azure, Oracle, and CI/CD pipelines.
Responsibilities:
- Develop, maintain, and improve business-critical full-stack applications
- Modernize legacy applications and migrate solutions to current versions of .NET
- Work across UI, backend services, APIs, and data sources
- Design and implement functionalities supporting registration of new molecules and other research entities
- Establish and improve Azure infrastructure for modernized and existing applications
- Create and maintain CI/CD pipelines using GitHub Actions
- Improve engineering quality through automated testing, code reviews, secure development practices, observability, and comprehensive documentation
- Support applications throughout their lifecycle, balancing maintenance, operational stability, technical debt reduction, and new development
Requirements:
- 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
- Broad understanding of software architecture, APIs, application security, testing, and deployment
- Self-driven working style with confidence to take full ownership of tasks and solutions
- Fluent English communication skills
- Based in Poland / Warsaw
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