Senior Full-Stack Developer - .NET, React, Azure & Terraform

Unleash innovation at the forefront of cloud-native application development-transform legacy systems into scalable, modern solutions!

Krakow-based opportunity with hybrid work model.

As a Senior Full-Stack Developer, you will be working for our client, an esteemed financial services organization, on the Hilda 2.0 modernization project. You will play a critical role in migrating legacy applications to a cutting-edge Azure architecture, supporting internal regulatory reporting in Israel. This role offers a unique chance to lead complex technical transformations, driving innovation and efficiency in a highly regulated environment.

Your main responsibilities

• Design and develop backend services and REST APIs in .NET 9 using Clean Architecture principles.
• Build and maintain React + TypeScript microfrontends integrated via module federation.
• Evolve MSSQL / Azure SQL schemas, optimize queries, and implement stored procedures.
• Author Infrastructure as Code in Terraform to provision Azure resources across environments.
• Develop, optimize, and support CI/CD pipelines within Azure DevOps, including automation and deployments.
• Integrate Azure AD (Entra ID) authentication, apply security best practices, and manage secrets via Key Vault.
• Instrument services for observability, including Application Insights and structured logging.
• Troubleshoot production issues, implement fixes, and support continuous deployment cycles.
• Collaborate in Agile teams to plan, review, and refine work processes.

You're ideal for this role if you have

• 5+ years of experience in full-stack development with C# / .NET (.NET 6+/9) and ASP.NET Core.
• Strong hands-on expertise with EF Core and MSSQL / Azure SQL (query tuning, stored procedures).
• Practical experience with Azure services such as App Service, Azure SQL, Storage, Key Vault, and Functions.
• In-depth knowledge of Infrastructure as Code using Terraform (modules, multi-environment).
• Proven experience with Azure DevOps pipelines (YAML, release management).
• Skilled in building and securing REST APIs with OAuth / JWT authentication, including Azure AD integration.
• Experience in automated testing frameworks (xUnit, Jest/Vitest, Playwright).
• Good understanding of observability tools like Application Insights and OpenTelemetry.
• Strong Git practices and peer code review discipline.
• Excellent command of English for technical communication (B2+).

It is a strong plus if you have: (optional)

• Production experience with React and TypeScript.
• Familiarity with Data & Reporting stacks: Azure Data Factory, Databricks/Spark, Power BI.
• Experience with microfrontends and module federation techniques.
• Knowledge of Docker and Kubernetes (AKS).
• Bicep or ARM templates alongside Terraform.
• Event-driven architectures (Service Bus, Event Hubs).
• Experience modernizing legacy UI and services (ASP.NET MVC/Razor, WPF, WinForms).
• Azure certifications (AZ-204, AZ-400, AZ-104) or HashiCorp Terraform Associate.

Language Required for the role

Communicative English (fluent command required).

Eligibility for the role

Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.