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.