Senior .NET / Blazor Developer

We are seeking a Senior .NET / Blazor Developer with deep hands-on expertise in Blazor Server and Razor components to design and build real-time, interactive web applications. The consultant will deliver resilient, performant server-side UI experiences using SignalR, reusable component libraries, and robust state management for concurrent users.

Responsibilities

• Design and build interactive web applications using Blazor Server and Razor components, applying deep knowledge of Razor syntax, templating, and component lifecycle
• Implement SignalR-backed real-time UI interactivity, managing circuit lifecycle and live data updates
• Architect connection resilience and reconnection strategies, handling circuit lifetime, disconnects, and graceful recovery
• Deliver server-side state management and memory optimization to support high concurrency and scale efficiently across concurrent users
• Build reusable Razor component libraries that promote consistency, maintainability, and reuse across the application
• Apply dependency injection patterns correctly within component hierarchies and service lifetimes
• Implement authentication and authorization in Blazor Server, including ASP.NET Identity, OAuth, and policy-based authorization
• Ensure code quality through testing and clear documentation of component contracts, patterns, and architectural decisions

Requirements

• Expertise in Blazor Server, Razor components (syntax, templating engine, component lifecycle), and C# / .NET with several years of professional experience
• Proficiency in SignalR real-time UI and circuit management, with skills in connection resilience and reconnection strategies
• Advanced knowledge of server-side state management and memory optimization for concurrency
• Skills in reusable Razor component library design
• Competency in dependency injection within component hierarchies
• Background in Blazor Server authentication and authorization, including Identity, OAuth, and policy-based authorization

Nice to have

• Familiarity with ASP.NET Core
• Knowledge of Entity Framework Core
• Understanding of frontend styling, including CSS and component theming
• Skills in performance profiling and diagnostics for .NET
• Familiarity with unit and integration testing using xUnit and bUnit
• Understanding of CI/CD pipelines

We offer

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes
• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please note

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively