Fullstack .NET Engineer

Project details:

• Location: Hybrid work with 5 days in the office per month in Kraków.

• Contract type: B2B

• Working time: 09:00-17:00 CET.

Summary: The Fullstack .NET Engineer role aims to drive the modernization of legacy applications into a cloud-native Azure architecture, contributing to both backend and frontend development while supporting various components of the system.

Responsibilities:

• Design and implement backend services and REST APIs in .NET 9 with Clean Architecture.

• Build and maintain React + TypeScript microfrontends.

• Evolve MSSQL / Azure SQL schemas and write/tune queries with EF Core.

• Author and maintain Infrastructure as Code in Terraform for Azure resources.

• Optimize and support CI/CD pipelines in Azure DevOps.

• Integrate Azure AD for authentication and apply security best practices.

• Instrument services for observability and health checks.

• Refactor legacy code during migration.

• Write and maintain automated tests.

• Troubleshoot production incidents and support deployments.

• Collaborate in Agile ceremonies and conduct code reviews.

Key Requirements:

• 5+ years of commercial full-stack experience with C# / .NET.

• Strong EF Core and MSSQL / Azure SQL skills.

• Hands-on Azure experience.

• Infrastructure as Code experience with Terraform.

• CI/CD experience in Azure DevOps.

• Experience building and securing REST APIs.

• Automated testing experience.

• Observability knowledge.

• Good Git practices and code review discipline.

Nice to Have:

• Production experience with React and TypeScript.

• Familiarity with Azure Data Factory and Power BI.

• Microfrontends or module federation experience.

• Experience with Docker and Kubernetes.

• Knowledge of Bicep / ARM in addition to Terraform.

• Event-driven integration with Azure services.

• Experience modernizing legacy UIs and services.

• Relevant Azure certifications (AZ-204, AZ-400, AZ-104).