At least 5 years of commercial full-stack development experience with C# and .NET, including .NET 6+ and https://jobeax.com/link/GrYTXLZMpxEMJknV Core.
Strong knowledge of EF Core and MSSQL / Azure SQL, including query tuning, indexing, transactions and stored procedures.
Hands-on experience with Azure services such as App Service, Azure SQL, Storage, Key Vault, Functions and Service Bus.
Practical experience with Infrastructure as Code using Terraform, including modules, state management and multi-environment provisioning.
Experience with Azure DevOps CI/CD and YAML pipelines.
Experience building and securing REST APIs, including validation, versioning, OAuth, JWT and Entra ID.
Experience with automated testing tools such as xUnit, Jest, Vitest or Playwright.
Knowledge of Application Insights, OpenTelemetry and structured logging.
Good Git practices and code review discipline.
English at B2 level or higher for technical communication.

Nice to have

Production experience with React and TypeScript.
Experience with Azure Data Factory, Databricks, Spark, Power BI or SSRS.
Knowledge of microfrontends and module federation.
Experience with Docker and Kubernetes / AKS.
Knowledge of Bicep or ARM templates.
Experience with event-driven integration using Service Bus or Event Hubs.
Experience modernizing legacy technologies such as https://jobeax.com/link/GrYTXLZMpxEMJknV MVC, Razor, WPF, WinForms, Windows Services or SSIS.
Azure certifications such as AZ-204, AZ-400 or AZ-104, or HashiCorp Terraform Associate.

Senior Full-Stack Engineer (.NET / React / Azure / Terraform)

About the role

We are looking for a Senior Full-Stack Engineer to join a large-scale modernization programme focused on migrating a portfolio of legacy applications and databases to a modular, cloud-native architecture on Microsoft Azure. You will work across backend, frontend, database and cloud/DevOps areas, contributing directly to production solutions and supporting the incremental transformation of business-critical systems.

What we offer

Hybrid work in Kraków, with 6 days per month in the office.
B2B contract
Rate : 160 -185 PLN netto/hour
Benefits: Luxmed, Multisport Card

,[Design and implement backend services and REST APIs in .NET 9 using Clean Architecture., Build and maintain React and TypeScript microfrontends integrated through module federation., Develop and optimize MSSQL and Azure SQL schemas, stored procedures, views and EF Core queries., Create and maintain Terraform code for provisioning Azure resources across environments., Build, optimize and support Azure DevOps CI/CD pipelines using YAML., Integrate Entra ID / MSAL authentication and apply security best practices, including Key Vault and least-privilege access., Implement observability with Application Insights, structured logging, health checks and alerting., Refactor legacy .NET and T-SQL solutions and extract business logic during migration., Create and maintain unit, integration, API and end-to-end automated tests., Troubleshoot production incidents, deliver fixes and support deployments., Collaborate in Agile ceremonies, estimate work, define acceptance criteria and participate in code reviews.] Requirements: .NET, C#, https://jobeax.com/link/GrYTXLZMpxEMJknV Core, EF core, MSSQL, Azure SQL, Azure Services, App Services, Storage, Key Vault, Service Bus, Infrastructure as Code, Terraform, Azure DevOps CI/CD, YAML, REST API, OAuth, JWT, Entra ID, xUnit, Jest, Vitest, Playwright, Application Insight, OpenTelemetry, Git, Code review, React, TypeScript, Azure Data Factory, Databricks, Spark, Power BI, SSRS, Docker, Kubernetes, AKS, Bicep, ARM, https://jobeax.com/link/GrYTXLZMpxEMJknV MVC, Razor, WPF, WinForms, Windows Services, AZ-204, AZ-400, AZ-104, HashiCorp terraform Associate

FullStack Engineer (.NET & React & Azure)

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