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

• Hybrid-by-design work and the 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.
• Certifications: Anthropic, Gemini, GCP, Azure, and AWS.
• English classes.
• Stable pay.
• Participation in the Employee Stock Purchase Plan with a 15% discount.
• Benefits package, including health insurance, multisport, and shopping vouchers.
• Referral bonuses up to $2,000.
• Offices with entertainment and relaxation zones, table tennis, football, free snacks, coffee, and more.
• Corporate, social, and well-being events.

Please note

• Benefits listed above are available to employees only.
• Contractors are welcome; B2B cooperation terms are agreed individually.
• Only selected candidates will be contacted.