FullStack Engineer

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) and flexible working hours Private healthcare and multisport card Personal growth and development opportunities with the possibility to rotate between projects Referral program and company events Convenient parking

Daily tasks

• Design and implement backend services and REST APIs in .NET 9 with Clean Architecture (API / Application / Domain / Infrastructure).
• Build and maintain React + TypeScript microfrontends using the shared UI component library, integrated into the HILDA 2 Shell via module federation.
• Evolve MSSQL / Azure SQL schemas in a database-first model (SSDT, stored procedures, views) and write/tune queries with EF Core.
• Author and maintain Infrastructure as Code in Terraform to provision and manage Azure resources across environments.
• Build, optimize and support CI/CD pipelines in Azure DevOps (build, test, release, environment promotion, pipelines-as-code).
• Integrate Azure AD (Entra ID) / MSAL authentication and apply security best practices (secrets, Key Vault, least privilege).
• Instrument services for observability (Application Insights, Serilog structured logging), health checks and alerting.
• Read, refactor and extract business logic from legacy .NET and T-SQL during incremental migration.
• Write and maintain automated tests: unit, integration, API and E2E.
• Troubleshoot production incidents, deliver fixes and support deployments.

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, React, Azure, Terraform, CI/CD