Senior .NET / Blazor Developer

EPAM Systems; Poland; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Health insurance

Multisport program

Shopping vouchers

Relocation opportunities

English classes

Job summary

EPAM Systems in Poland seeks aSenior .NET / Blazor Developer to design and build real‑time, interactive web apps using Blazor Server and Razor components. You will deliver resilient server‑side UI experiences with SignalR and scalable component libraries.

Responsibilities include implementing authentication/authorization, memory optimization for concurrency, and robust state management with dependency injection.

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.

Responsibilities

• Design and build interactive web applications using Blazor Server and Razor components.
• Implement SignalR‑backed real‑time UI interactivity and data updates.
• Architect connection resilience and reconnection strategies for circuit lifetime and graceful recovery.
• Deliver server‑side state management and memory optimization for high concurrency.
• Build reusable Razor component libraries to promote consistency and maintainability.

Skills

Blazor Server

Razor Components

C# / .NET

SignalR

State Management

Dependency Injection

Authentication/Authorization

Unit Testing (xUnit, bUnit)

Tools

ASP.NET Core

Entity Framework Core

Job description

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

• We gather like‑minded people:
  • 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
• We provide growth opportunities:
  • Career development programs
  • Thought leadership, mentoring, soft skills and well‑being programs
  • Certification (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes
• We cover it all:
  • 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

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI‑Native enterprises, driving measurable value from innovation and digital investments.