Full Stack Engineer NET React Azure Terraform

Infinity Quest; Kraków; On-site; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Fast onboarding and access to repos

Broad technical scope across backend,

Direct collaboration with architects

Job summary

Infinity Quest is seeking a seasoned fullstack developer specializing in .NET technologies to join their Kraków team. You will work across backend, frontend, database, and cloud layers, shaping architecture while delivering robust REST APIs and secure solutions.

The role emphasizes hands-on coding, collaboration with architects and product owners, and the ability to move between backend, frontend, and DevOps tasks in an agile environment. Proficiency in English is required.

Qualifications

• 5 years commercial fullstack experience with C#.NET and ASP.NET Core.
• Strong EF Core and MSSQL/Azure SQL skills including query tuning and indexing.
• Hands-on Azure experience with App Service, Storage, Key Vault, Functions, Service Bus.
• IaC experience with Terraform for multi-environment provisioning.
• CI/CD experience in Azure DevOps pipelines-as-code, releases and environments.
• Practical experience building and securing REST APIs with OAuth/JWT/Azure AD.
• Automated testing experience with xUnit, Jest, Vitest or Playwright.
• Observability with Application Insights, OpenTelemetry and structured logging.
• Good Git practices and code review discipline.
• English for technical communication at B2 level.

Skills

C#.NET

ASP.NET Core

EF Core

MSSQL

Azure SQL

REST APIs

OAuth JWT

Azure AD

Unit testing

Git workflows

Tools

Terraform

Azure DevOps

Docker

Kubernetes (AKS)

Azure

Job description

Job description

5 years commercial fullstack experience with C NET NET 69 and ASPNET Core

Strong EF Core and MSSQL Azure SQL skills query tuning indexing transactions stored procedures

Handson Azure experience App Service Azure SQL Storage Key Vault Functions Service Bus

Infrastructure as Code with Terraform modules state multienvironment provisioning

CICD experience in Azure DevOps YAML pipelinesascode 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

OPTIONALNICE TO HAVE

• Production experience with React and TypeScript
• Data reporting stack Azure Data Factory Databricks Spark Power BI SSRS
• Microfrontends module federation experience
• Docker and Kubernetes AKS
• Bicep ARM in addition to Terraform
• Eventdriven integration Service Bus Event Hubs
• Experience modernizing legacy UIs and services ASPNET MVC Razor WPF WinForms Windows Services SSIS
• Azure certifications AZ204 AZ400 AZ104 or HashiCorp Terraform Associate

WHAT WE OFFER

• Fast technical onboarding and access to repos CICD devstagingUAT environments and monitoring
• Broad technical scope real work across backend frontend database cloud and DevOps
• Direct collaboration with Architects Tech Lead Product Owner and engineers real influence on architecture
• A modern Azurenative stack NET 9 React Terraform Azure DevOps alongside selected legacy systems
• Autonomy to choose practical solutions and shape the technical approach

Additional information About the role optionalThe team works in Agile with short iterations This is a crossfunctional handson role you will contribute code to production repositories across multiple HTC applications and shared libraries and you are expected to move flexibly between backend frontend database and infrastructureDevOps work depending on the s