As a Mid/Senior FullStack Engineer – .NET & React with Azure Experience, you will be working for our client, a leading financial institution, on a transformative project to modernize a portfolio of .NET applications and MSSQL databases into a modular, cloud-native Azure architecture. This initiative aims to reduce technical debt, enhance security, streamline data flows, and enable incremental delivery of services—while supporting legacy UIs and functionalities. You will be instrumental in extracting and reimplementing embedded business logic, boosting observability, and delivering high-quality, scalable software solutions aligned with business and technical goals.
Unleash innovation at scale — revolutionize legacy systems into cloud-native solutions!
Kraków-based opportunity with hybrid work model (5days/month remote).
responsibilities :
Design and implement backend services and APIs in .NET 6/8 utilizing clean architecture principles
Read, refactor, and extract business logic from legacy .NET and TSQL codebases
Write and maintain extensive automated tests across unit, integration, contract, and E2E layers
Create and manage CI/CD pipelines using Azure DevOps or GitHub Actions and Infrastructure as Code artifacts
Instrument services for observability through metrics, logs, and distributed tracing
Troubleshoot production incidents and deliver timely fixes and support deployments
Participate in architecture and domain modeling activities with DDD patterns and bounded contexts
Collaborate in Agile ceremonies, estimate tasks, and define acceptance criteria
requirements-expected :
5+ years of commercial experience with C# and .NET (Framework + .NET Core / 6+)
Strong expertise in EF Core and MSSQL (query tuning, transactions, indexing)
Proven experience with React and TypeScript in production environments
Hands-on experience building and securing REST APIs with validation, versioning, and authentication
Familiarity with Azure services such as App Service, Functions, Azure SQL, Storage, and Service Bus
Experience with CI/CD and automated testing tools like xUnit, Jest, Playwright, or Cypress
Knowledge of observability tools like Application Insights or OpenTelemetry
Ability to interpret and work with legacy codebases (ASP.NET MVC, Razor, WPF, WinForms)
Good Git practices and thorough code review discipline
Fluent Polish and English language skills (B2+) for effective technical communication
Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role
offered :
Stable and long-term cooperation with very good conditions
Enhance your skills and develop your expertise in the financial industry
Work on the most strategic projects available in the market
Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
Participate in Social Events, training, and work in an international environment
Access to attractive Medical Package
Access to Multisport Program
Access to Pluralsight
benefits :
sharing the costs of sports activities
private medical care
flexible working time
fruits
integration events
corporate gym
saving & investment scheme
no dress code
coffee / tea
drinks
christmas gifts
birthday celebration
sharing the costs of a streaming platform subscription
