.Net/ C# Fullstack Engineer

Your tasks

• Build backend services and REST APIs in .NET 9 following Clean Architecture.
• Develop React + TypeScript microfrontends with a shared component library, integrated via module federation.
• Work with MSSQL / Azure SQL in a database-first approach (SSDT, stored procedures) and optimize queries with EF Core.
• Manage Azure infrastructure as code with Terraform.
• Maintain and improve CI/CD pipelines in Azure DevOps.
• Implement Entra ID / MSAL authentication and follow security best practices (Key Vault, least privilege).
• Ensure observability with Application Insights, Serilog, health checks, and alerting.
• Refactor legacy .NET and T-SQL code and extract business logic as part of a gradual migration.
• Write automated unit, integration, API, and E2E tests.
• Handle production incidents, deliver fixes, and support releases.

Requirements

• 5+ years commercial full-stack experience with C# / .NET (.NET 6+/9) and ASP.NET Core.
• Strong EF Core and MSSQL / Azure SQL skills (query tuning, indexing, transactions, stored procedures).
• Hands-on Azure experience (App Service, Azure SQL, Storage, Key Vault, Functions / Service Bus).
• Infrastructure as Code with Terraform (modules, state, multi-environment provisioning).
• CI/CD experience in Azure DevOps (YAML pipelines-as-code, release and environment management).
• Practical experience building and securing REST APIs (validation, versioning, auth - OAuth / JWT, Azure AD).
• Automated testing experience (xUnit, Jest / Vitest, Playwright).
• Observability knowledge (Application Insights / OpenTelemetry, structured logging).
• Good Git practices and code review discipline.
• English for technical communication (B2+).

Must have:

• .NET
• ASP
• MS SQL
• Azure
• CI/CD

What we offer

• Prestigious position at one of the world’s largest banks
• Stable, long-term projects
• Competitive salary with a B2B contract
• Hybrid work (6 days per month from the office in Cracow)
• Private healthcare and multisport card
• Personal growth and development opportunities with the possibility to rotate between projects
• Referral program and company events
• Convenient parking