Senior Blazor Server Architect: Real-Time UI & Performance

EPAM Systems, Inc.; Poland; Remote; PLN 180,000 - 280,000; Full time

Job summary

EPAM Systems, Inc. in Poland is seeking a Senior .NET/Blazor Developer to design and build real-time, server-driven web applications using Blazor Server and Razor components.

You will create resilient server-side UI experiences with SignalR, reusable component libraries, and robust state management for high concurrency. The ideal candidate combines deep .NET expertise with authentication/authorization know-how and a focus on code quality, testing, and documentation.

Qualifications

• Expertise in Blazor Server, Razor components, 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 and frontend styling (CSS).
• Understanding of performance profiling and diagnostics for .NET.
• Familiarity with unit and integration testing using xUnit and bUnit.
• Understanding of CI/CD pipelines.

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.
• 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.

Skills

Blazor Server

Razor components

C# / .NET

Real-time UI design

Dependency injection

Authentication & Authorization

Testing (xUnit, bUnit)

CI/CD familiarity

Performance profiling

Frontend styling

Tools

ASP.NET Core

SignalR

Entity Framework Core

Job description

EPAM Systems, Inc. in Poland is seeking a Senior .NET/Blazor Developer to design and build real-time, server-driven web applications using Blazor Server and Razor components.

You will create resilient server-side UI experiences with SignalR, reusable component libraries, and robust state management for high concurrency. The ideal candidate combines deep .NET expertise with authentication/authorization know-how and a focus on code quality, testing, and documentation.