Full Stack Developer (.NET + React)

O projekcie: 📍 Client and contract: lead international bank | B2B 🗣️ Recruitment: phone screen with our recruiter + 2 on-line meetings with hiring managers 🗺️ Hybrid work: 6 days per month from the office in Cracow Verita HR is an international company providing recruitment support within #Fintech, #Finance and #Banking market in EMEA. We connect the most innovative organizations with the best people in the market. We conduct systematic market research, which allows our Digital Teams to be a step ahead of the competition. We are modernizing ~a dozen .NET applications and MSSQL databases to a modular, cloud‑native Azure architecture while continuing to support and evolve existing production UIs and services (ASP.NET MVC / Razor, legacy Angular, WPF, WinForms, Windows Services, SSIS). The goal is a unified quality strategy and reliable automation that supports incremental migration, reduces regressions in legacy flows and enables safe frequent delivery. What's in it for you? - Opportunity to work on complex and strategic projects in an international environment - Stable and long-term cooperation based on a B2B contract - Hybrid work (6 days per month from the office in Cracow) and flexible working hours - Working with modern IT technologies - Growth and development opportunities with the possibility to move between projects - Private healthcare and multisport card - Referral program, free parking and company events Wymagania: - 5+ years commercial experience with C# and .NET (Framework + .NET Core / .NET 6+) - Strong experience with EF Core and MSSQL (query tuning, transactions, indexing) - Production experience with React and TypeScript - Practical experience building and securing REST APIs (validation, versioning, auth) - Familiarity with Azure services (App Service, Functions, Azure SQL, Storage, Service Bus) - CI/CD and automated testing experience (xUnit, Jest, Playwright/Cypress) - Observability knowledge (Application Insights / OpenTelemetry, structured logging) - Ability to read and reason about legacy codebases (ASP.NET MVC, Razor, WPF, WinForms) - Good Git practices and code review discipline Codzienne zadania: - Design and implement backend services and APIs in .NET (6/8) with clean architecture - Build and maintain React + TypeScript frontends and incremental migrations from legacy UI - Read, refactor and extract business logic from legacy .NET and T‑SQL (stored procedures) - Write and maintain automated tests: unit, integration, contract and e2e - Create and maintain CI/CD pipelines (Azure DevOps / GitHub Actions) and IaC artifacts - Instrument services for observability (metrics, logs, distributed traces) and alerting - Troubleshoot production incidents, deliver fixes and support deployments - Participate in architecture and domain modelling activities (DDD patterns, bounded contexts)